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rector/docs/rector_rules_overview.md
Tomas Votruba 44595ed746 Updated Rector to commit 937bf3e28b7868d79c4679d8e1e03cfb2e366a42 
937bf3e28b [Transform] Add MethodCallToFuncCallRector (#3391)
2023-02-19 13:39:22 +00:00

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414 Rules Overview


Categories


Arguments

ArgumentAdderRector

This Rector adds new default arguments in calls of defined methods and class types.

🔧 configure it!

<?php

declare(strict_types=1);

use PHPStan\Type\ObjectType;
use Rector\Arguments\Rector\ClassMethod\ArgumentAdderRector;
use Rector\Arguments\ValueObject\ArgumentAdder;
use Rector\Config\RectorConfig;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(ArgumentAdderRector::class, [
        new ArgumentAdder('SomeExampleClass', 'someMethod', 0, 'someArgument', true, new ObjectType('SomeType')),
    ]);
};

↓

 $someObject = new SomeExampleClass;
-$someObject->someMethod();
+$someObject->someMethod(true);

 class MyCustomClass extends SomeExampleClass
 {
-    public function someMethod()
+    public function someMethod($value = true)
     {
     }
 }

FunctionArgumentDefaultValueReplacerRector

Streamline the operator arguments of version_compare function

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Arguments\Rector\FuncCall\FunctionArgumentDefaultValueReplacerRector;
use Rector\Arguments\ValueObject\ReplaceFuncCallArgumentDefaultValue;
use Rector\Config\RectorConfig;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(FunctionArgumentDefaultValueReplacerRector::class, [
        new ReplaceFuncCallArgumentDefaultValue('version_compare', 2, 'gte', 'ge'),
    ]);
};

↓

-version_compare(PHP_VERSION, '5.6', 'gte');
+version_compare(PHP_VERSION, '5.6', 'ge');

RemoveMethodCallParamRector

Remove parameter of method call

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Arguments\Rector\MethodCall\RemoveMethodCallParamRector;
use Rector\Arguments\ValueObject\RemoveMethodCallParam;
use Rector\Config\RectorConfig;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(RemoveMethodCallParamRector::class, [
        new RemoveMethodCallParam('Caller', 'process', 1),
    ]);
};

↓

 final class SomeClass
 {
     public function run(Caller $caller)
     {
-        $caller->process(1, 2);
+        $caller->process(1);
     }
 }

ReplaceArgumentDefaultValueRector

Replaces defined map of arguments in defined methods and their calls.

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Arguments\Rector\ClassMethod\ReplaceArgumentDefaultValueRector;
use Rector\Arguments\ValueObject\ReplaceArgumentDefaultValue;
use Rector\Config\RectorConfig;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(ReplaceArgumentDefaultValueRector::class, [
        new ReplaceArgumentDefaultValue('SomeClass', 'someMethod', 0, 'SomeClass::OLD_CONSTANT', false),
    ]);
};

↓

 $someObject = new SomeClass;
-$someObject->someMethod(SomeClass::OLD_CONSTANT);
+$someObject->someMethod(false);

SwapFuncCallArgumentsRector

Reorder arguments in function calls

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Arguments\Rector\FuncCall\SwapFuncCallArgumentsRector;
use Rector\Arguments\ValueObject\SwapFuncCallArguments;
use Rector\Config\RectorConfig;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(SwapFuncCallArgumentsRector::class, [
        new SwapFuncCallArguments('some_function', [
            2,
            1,
            0,
        ]),
    ]);
};

↓

 final class SomeClass
 {
     public function run()
     {
-        return some_function('one', 'two', 'three');
+        return some_function('three', 'two', 'one');
     }
 }

CodeQuality

AbsolutizeRequireAndIncludePathRector

include/require to absolute path. This Rector might introduce backwards incompatible code, when the include/require being changed depends on the current working directory.

 class SomeClass
 {
     public function run()
     {
-        require 'autoload.php';
+        require __DIR__ . '/autoload.php';

         require $variable;
     }
 }

AddPregQuoteDelimiterRector

Add preg_quote delimiter when missing

-'#' . preg_quote('name') . '#';
+'#' . preg_quote('name', '#') . '#';

AndAssignsToSeparateLinesRector

Split 2 assigns ands to separate line

 class SomeClass
 {
     public function run()
     {
         $tokens = [];
-        $token = 4 and $tokens[] = $token;
+        $token = 4;
+        $tokens[] = $token;
     }
 }

ArrayKeyExistsTernaryThenValueToCoalescingRector

Change array_key_exists() ternary to coalescing

 class SomeClass
 {
     public function run($values, $keyToMatch)
     {
-        $result = array_key_exists($keyToMatch, $values) ? $values[$keyToMatch] : null;
+        $result = $values[$keyToMatch] ?? null;
     }
 }

ArrayKeysAndInArrayToArrayKeyExistsRector

Replace array_keys() and in_array() to array_key_exists()

 function run($packageName, $values)
 {
-    $keys = array_keys($values);
-    return in_array($packageName, $keys, true);
+    return array_key_exists($packageName, $values);
 }

ArrayMergeOfNonArraysToSimpleArrayRector

Change array_merge of non arrays to array directly

 class SomeClass
 {
     public function go()
     {
         $value = 5;
         $value2 = 10;

-        return array_merge([$value], [$value2]);
+        return [$value, $value2];
     }
 }

BooleanNotIdenticalToNotIdenticalRector

Negated identical boolean compare to not identical compare (does not apply to non-bool values)

 class SomeClass
 {
     public function run()
     {
         $a = true;
         $b = false;

-        var_dump(! $a === $b); // true
-        var_dump(! ($a === $b)); // true
+        var_dump($a !== $b); // true
+        var_dump($a !== $b); // true
         var_dump($a !== $b); // true
     }
 }

BoolvalToTypeCastRector

Change boolval() to faster and readable (bool) $value

 class SomeClass
 {
     public function run($value)
     {
-        return boolval($value);
+        return (bool) $value;
     }
 }

CallUserFuncWithArrowFunctionToInlineRector

Refactor call_user_func() with arrow function to direct call

 final class SomeClass
 {
     public function run()
     {
-        $result = \call_user_func(fn () => 100);
+        $result = 100;
     }
 }

CallableThisArrayToAnonymousFunctionRector

Convert [$this, "method"] to proper anonymous function

 class SomeClass
 {
     public function run()
     {
         $values = [1, 5, 3];
-        usort($values, [$this, 'compareSize']);
+        usort($values, function ($first, $second) {
+            return $this->compareSize($first, $second);
+        });

         return $values;
     }

     private function compareSize($first, $second)
     {
         return $first <=> $second;
     }
 }

ChangeArrayPushToArrayAssignRector

Change array_push() to direct variable assign

 $items = [];
-array_push($items, $item);
+$items[] = $item;

CombineIfRector

Merges nested if statements

 class SomeClass
 {
     public function run()
     {
-        if ($cond1) {
-            if ($cond2) {
-                return 'foo';
-            }
+        if ($cond1 && $cond2) {
+            return 'foo';
         }
     }
 }

CombinedAssignRector

Simplify $value = $value + 5; assignments to shorter ones

-$value = $value + 5;
+$value += 5;

CommonNotEqualRector

Use common != instead of less known <> with same meaning

 final class SomeClass
 {
     public function run($one, $two)
     {
-        return $one <> $two;
+        return $one != $two;
     }
 }

CompactToVariablesRector

Change compact() call to own array

 class SomeClass
 {
     public function run()
     {
         $checkout = 'one';
         $form = 'two';

-        return compact('checkout', 'form');
+        return ['checkout' => $checkout, 'form' => $form];
     }
 }

CompleteDynamicPropertiesRector

Add missing dynamic properties

 class SomeClass
 {
+    /**
+     * @var int
+     */
+    public $value;
+
     public function set()
     {
         $this->value = 5;
     }
 }

ConsecutiveNullCompareReturnsToNullCoalesceQueueRector

Change multiple null compares to ?? queue

 class SomeClass
 {
     public function run()
     {
-        if (null !== $this->orderItem) {
-            return $this->orderItem;
-        }
-
-        if (null !== $this->orderItemUnit) {
-            return $this->orderItemUnit;
-        }
-
-        return null;
+        return $this->orderItem ?? $this->orderItemUnit;
     }
 }

ConvertStaticPrivateConstantToSelfRector

Replaces static::* access to private constants with self::*

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\CodeQuality\Rector\ClassConstFetch\ConvertStaticPrivateConstantToSelfRector;
use Rector\Config\RectorConfig;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(ConvertStaticPrivateConstantToSelfRector::class, [
        ConvertStaticPrivateConstantToSelfRector::ENABLE_FOR_NON_FINAL_CLASSES => false,
    ]);
};

↓

 final class Foo {
     private const BAR = 'bar';
     public function run()
     {
-        $bar = static::BAR;
+        $bar = self::BAR;
     }
 }

ExplicitBoolCompareRector

Make if conditions more explicit

 final class SomeController
 {
     public function run($items)
     {
-        if (!count($items)) {
+        if (count($items) === 0) {
             return 'no items';
         }
     }
 }

ExplicitMethodCallOverMagicGetSetRector

Replace magic property fetch using __get() and __set() with existing method get*()/set*() calls

 class MagicCallsObject
 {
     // adds magic __get() and __set() methods
     use \Nette\SmartObject;

     private $name;

     public function getName()
     {
         return $this->name;
     }
 }

 class SomeClass
 {
     public function run(MagicObject $magicObject)
     {
-        return $magicObject->name;
+        return $magicObject->getName();
     }
 }

FlipTypeControlToUseExclusiveTypeRector

Flip type control to use exclusive type

-/** @var PhpDocInfo|null $phpDocInfo */
 $phpDocInfo = $functionLike->getAttribute(AttributeKey::PHP_DOC_INFO);
-if ($phpDocInfo === null) {
+if (! $phpDocInfo instanceof PhpDocInfo) {
     return;
 }

FloatvalToTypeCastRector

Change floatval() and doubleval() to faster and readable (float) $value

 class SomeClass
 {
     public function run($value)
     {
-        $a = floatval($value);
-        $b = doubleval($value);
+        $a = (float) $value;
+        $b = (float) $value;
     }
 }

ForRepeatedCountToOwnVariableRector

Change count() in for function to own variable

 class SomeClass
 {
     public function run($items)
     {
-        for ($i = 5; $i <= count($items); $i++) {
+        $itemsCount = count($items);
+        for ($i = 5; $i <= $itemsCount; $i++) {
             echo $items[$i];
         }
     }
 }

ForToForeachRector

Change for() to foreach() where useful

 class SomeClass
 {
     public function run($tokens)
     {
-        for ($i = 0, $c = count($tokens); $i < $c; ++$i) {
-            if ($tokens[$i][0] === T_STRING && $tokens[$i][1] === 'fn') {
+        foreach ($tokens as $i => $token) {
+            if ($token[0] === T_STRING && $token[1] === 'fn') {
                 $tokens[$i][0] = self::T_FN;
             }
         }
     }
 }

ForeachItemsAssignToEmptyArrayToAssignRector

Change foreach() items assign to empty array to direct assign

 class SomeClass
 {
     public function run($items)
     {
         $collectedItems = [];

-        foreach ($items as $item) {
-             $collectedItems[] = $item;
-        }
+        $collectedItems = $items;
     }
 }

ForeachToInArrayRector

Simplify foreach loops into in_array when possible

-foreach ($items as $item) {
-    if ($item === 'something') {
-        return true;
-    }
-}
-
-return false;
+return in_array('something', $items, true);

GetClassToInstanceOfRector

Changes comparison with get_class to instanceof

-if (EventsListener::class === get_class($event->job)) { }
+if ($event->job instanceof EventsListener) { }

InlineArrayReturnAssignRector

Inline just in time array dim fetch assigns to direct return

 function getPerson()
 {
-    $person = [];
-    $person['name'] = 'Timmy';
-    $person['surname'] = 'Back';
-
-    return $person;
+    return [
+        'name' => 'Timmy',
+        'surname' => 'Back',
+    ];
 }

InlineConstructorDefaultToPropertyRector

Move property default from constructor to property default

 final class SomeClass
 {
-    private $name;
+    private $name = 'John';

     public function __construct()
     {
-        $this->name = 'John';
     }
 }

InlineIfToExplicitIfRector

Change inline if to explicit if

 class SomeClass
 {
     public function run()
     {
         $userId = null;

-        is_null($userId) && $userId = 5;
+        if (is_null($userId)) {
+            $userId = 5;
+        }
     }
 }

InlineIsAInstanceOfRector

Change is_a() with object and class name check to instanceof

 class SomeClass
 {
     public function run(object $object)
     {
-        return is_a($object, SomeType::class);
+        return $object instanceof SomeType;
     }
 }

IntvalToTypeCastRector

Change intval() to faster and readable (int) $value

 class SomeClass
 {
     public function run($value)
     {
-        return intval($value);
+        return (int) $value;
     }
 }

IsAWithStringWithThirdArgumentRector

Complete missing 3rd argument in case is_a() function in case of strings

 class SomeClass
 {
     public function __construct(string $value)
     {
-        return is_a($value, 'stdClass');
+        return is_a($value, 'stdClass', true);
     }
 }

IssetOnPropertyObjectToPropertyExistsRector

Change isset on property object to property_exists() and not null check

 class SomeClass
 {
     private $x;

     public function run(): void
     {
-        isset($this->x);
+        property_exists($this, 'x') && $this->x !== null;
     }
 }

JoinStringConcatRector

Joins concat of 2 strings, unless the length is too long

 class SomeClass
 {
     public function run()
     {
-        $name = 'Hi' . ' Tom';
+        $name = 'Hi Tom';
     }
 }

LogicalToBooleanRector

Change OR, AND to ||, && with more common understanding

-if ($f = false or true) {
+if (($f = false) || true) {
     return $f;
 }

NarrowUnionTypeDocRector

Changes docblock by narrowing type

 class SomeClass {
     /**
-     * @param object|DateTime $message
+     * @param DateTime $message
      */
     public function getMessage(object $message)
     {
     }
 }

NewStaticToNewSelfRector

Change unsafe new static() to new self()

 class SomeClass
 {
     public function build()
     {
-        return new static();
+        return new self();
     }
 }

OptionalParametersAfterRequiredRector

Move required parameters after optional ones

 class SomeObject
 {
-    public function run($optional = 1, $required)
+    public function run($required, $optional = 1)
     {
     }
 }

RemoveAlwaysTrueConditionSetInConstructorRector

If conditions is always true, perform the content right away

 final class SomeClass
 {
     private $value;

     public function __construct(stdClass $value)
     {
         $this->value = $value;
     }

     public function go()
     {
-        if ($this->value) {
-            return 'yes';
-        }
+        return 'yes';
     }
 }

RemoveSoleValueSprintfRector

Remove sprintf() wrapper if not needed

 class SomeClass
 {
     public function run()
     {
-        $value = sprintf('%s', 'hi');
+        $value = 'hi';

         $welcome = 'hello';
-        $value = sprintf('%s', $welcome);
+        $value = $welcome;
     }
 }

ReplaceMultipleBooleanNotRector

Replace the Double not operator (!!) by type-casting to boolean

-$bool = !!$var;
+$bool = (bool) $var;

ReturnTypeFromStrictScalarReturnExprRector

Change return type based on strict scalar returns - string, int, float or bool

 final class SomeClass
 {
-    public function run($value)
+    public function run($value): string
     {
         if ($value) {
             return 'yes';
         }

         return 'no';
     }
 }

SetTypeToCastRector

Changes settype() to (type) where possible

 class SomeClass
 {
     public function run($foo)
     {
-        settype($foo, 'string');
+        $foo = (string) $foo;

-        return settype($foo, 'integer');
+        return (int) $foo;
     }
 }

ShortenElseIfRector

Shortens else/if to elseif

 class SomeClass
 {
     public function run()
     {
         if ($cond1) {
             return $action1;
-        } else {
-            if ($cond2) {
-                return $action2;
-            }
+        } elseif ($cond2) {
+            return $action2;
         }
     }
 }

SimplifyArraySearchRector

Simplify array_search to in_array

-array_search("searching", $array) !== false;
+in_array("searching", $array);


-array_search("searching", $array, true) !== false;
+in_array("searching", $array, true);

SimplifyBoolIdenticalTrueRector

Simplify bool value compare to true or false

 class SomeClass
 {
     public function run(bool $value, string $items)
     {
-         $match = in_array($value, $items, TRUE) === TRUE;
-         $match = in_array($value, $items, TRUE) !== FALSE;
+         $match = in_array($value, $items, TRUE);
+         $match = in_array($value, $items, TRUE);
     }
 }

SimplifyConditionsRector

Simplify conditions

-if (! ($foo !== 'bar')) {...
+if ($foo === 'bar') {...

SimplifyDeMorganBinaryRector

Simplify negated conditions with de Morgan theorem

 $a = 5;
 $b = 10;
-$result = !($a > 20 || $b <= 50);
+$result = $a <= 20 && $b > 50;

SimplifyEmptyArrayCheckRector

Simplify is_array and empty functions combination into a simple identical check for an empty array

-is_array($values) && empty($values)
+$values === []

SimplifyEmptyCheckOnEmptyArrayRector

Simplify empty functions calls on empty arrays

-$array = []; if(empty($values))
+$array = []; if([] === $values)

SimplifyForeachToArrayFilterRector

Simplify foreach with function filtering to array filter

-$directories = [];
-
 $possibleDirectories = [];
-foreach ($possibleDirectories as $possibleDirectory) {
-    if (file_exists($possibleDirectory)) {
-        $directories[] = $possibleDirectory;
-    }
-}
+$directories = array_filter($possibleDirectories, 'file_exists');

SimplifyForeachToCoalescingRector

Changes foreach that returns set value to ??

-foreach ($this->oldToNewFunctions as $oldFunction => $newFunction) {
-    if ($currentFunction === $oldFunction) {
-        return $newFunction;
-    }
-}
-
-return null;
+return $this->oldToNewFunctions[$currentFunction] ?? null;

SimplifyFuncGetArgsCountRector

Simplify count of func_get_args() to func_num_args()

-count(func_get_args());
+func_num_args();

SimplifyIfElseToTernaryRector

Changes if/else for same value as assign to ternary

 class SomeClass
 {
     public function run()
     {
-        if (empty($value)) {
-            $this->arrayBuilt[][$key] = true;
-        } else {
-            $this->arrayBuilt[][$key] = $value;
-        }
+        $this->arrayBuilt[][$key] = empty($value) ? true : $value;
     }
 }

SimplifyIfExactValueReturnValueRector

Changes compared to value and return of expr to direct return

 $value = 'something';
-if ($value === 52) {
-    return 52;
-}
-
 return $value;

SimplifyIfNotNullReturnRector

Changes redundant null check to instant return

 $newNode = 'something';
-if ($newNode !== null) {
-    return $newNode;
-}
-
-return null;
+return $newNode;

SimplifyIfNullableReturnRector

Direct return on if nullable check before return

 class SomeClass
 {
     public function run()
     {
-        /** @var \stdClass|null $value */
-        $value = $this->foo->bar();
-        if (! $value instanceof \stdClass) {
-            return null;
-        }
-
-        return $value;
+        return $this->foo->bar();
     }
 }

SimplifyIfReturnBoolRector

Shortens if return false/true to direct return

-if (strpos($docToken->getContent(), "\n") === false) {
-    return true;
-}
-
-return false;
+return strpos($docToken->getContent(), "\n") === false;

SimplifyInArrayValuesRector

Removes unneeded array_values() in in_array() call

-in_array("key", array_values($array), true);
+in_array("key", $array, true);

SimplifyRegexPatternRector

Simplify regex pattern to known ranges

 class SomeClass
 {
     public function run($value)
     {
-        preg_match('#[a-zA-Z0-9+]#', $value);
+        preg_match('#[\w\d+]#', $value);
     }
 }

SimplifyStrposLowerRector

Simplify strpos(strtolower(), "...") calls

-strpos(strtolower($var), "...")
+stripos($var, "...")

SimplifyTautologyTernaryRector

Simplify tautology ternary to value

-$value = ($fullyQualifiedTypeHint !== $typeHint) ? $fullyQualifiedTypeHint : $typeHint;
+$value = $fullyQualifiedTypeHint;

SimplifyUselessLastVariableAssignRector

Removes the latest useless variable assigns before a variable will return.

 function ($b) {
-    $a = true;
     if ($b === 1) {
         return $b;
     }
-    return $a;
+    return true;
 };

SimplifyUselessVariableRector

Removes useless variable assigns

 function () {
-    $a = true;
-    return $a;
+    return true;
 };

SingleInArrayToCompareRector

Changes in_array() with single element to ===

 class SomeClass
 {
     public function run()
     {
-        if (in_array(strtolower($type), ['$this'], true)) {
+        if (strtolower($type) === '$this') {
             return strtolower($type);
         }
     }
 }

SingularSwitchToIfRector

Change switch with only 1 check to if

 class SomeObject
 {
     public function run($value)
     {
         $result = 1;
-        switch ($value) {
-            case 100:
+        if ($value === 100) {
             $result = 1000;
         }

         return $result;
     }
 }

SplitListAssignToSeparateLineRector

Splits [$a, $b] = [5, 10] scalar assign to standalone lines

 final class SomeClass
 {
     public function run(): void
     {
-        [$a, $b] = [1, 2];
+        $a = 1;
+        $b = 2;
     }
 }

StrlenZeroToIdenticalEmptyStringRector

Changes strlen comparison to 0 to direct empty string compare

 class SomeClass
 {
     public function run(string $value)
     {
-        $empty = strlen($value) === 0;
+        $empty = $value === '';
     }
 }

StrvalToTypeCastRector

Change strval() to faster and readable (string) $value

 class SomeClass
 {
     public function run($value)
     {
-        return strval($value);
+        return (string) $value;
     }
 }

SwitchNegatedTernaryRector

Switch negated ternary condition rector

 class SomeClass
 {
     public function run(bool $upper, string $name)
     {
-        return ! $upper
-            ? $name
-            : strtoupper($name);
+        return $upper
+            ? strtoupper($name)
+            : $name;
     }
 }

TernaryEmptyArrayArrayDimFetchToCoalesceRector

Change ternary empty on array property with array dim fetch to coalesce operator

 final class SomeClass
 {
     private array $items = [];

     public function run()
     {
-        return ! empty($this->items) ? $this->items[0] : 'default';
+        return $this->items[0] ?? 'default';
     }
 }

TernaryFalseExpressionToIfRector

Change ternary with false to if and explicit call

 final class SomeClass
 {
     public function run($value, $someMethod)
     {
-        $value ? $someMethod->call($value) : false;
+        if ($value) {
+            $someMethod->call($value);
+        }
     }
 }

ThrowWithPreviousExceptionRector

When throwing into a catch block, checks that the previous exception is passed to the new throw clause

 class SomeClass
 {
     public function run()
     {
         try {
             $someCode = 1;
         } catch (Throwable $throwable) {
-            throw new AnotherException('ups');
+            throw new AnotherException('ups', $throwable->getCode(), $throwable);
         }
     }
 }

UnnecessaryTernaryExpressionRector

Remove unnecessary ternary expressions

-$foo === $bar ? true : false;
+$foo === $bar;

UnusedForeachValueToArrayKeysRector

Change foreach with unused $value but only $key, to array_keys()

 class SomeClass
 {
     public function run()
     {
         $items = [];
-        foreach ($values as $key => $value) {
+        foreach (array_keys($values) as $key) {
             $items[$key] = null;
         }
     }
 }

UnwrapSprintfOneArgumentRector

unwrap sprintf() with one argument

-echo sprintf('value');
+echo 'value';

UseIdenticalOverEqualWithSameTypeRector

Use ===/!== over ==/!=, it values have the same type

 class SomeClass
 {
     public function run(int $firstValue, int $secondValue)
     {
-         $isSame = $firstValue == $secondValue;
-         $isDiffernt = $firstValue != $secondValue;
+         $isSame = $firstValue === $secondValue;
+         $isDiffernt = $firstValue !== $secondValue;
     }
 }

CodingStyle

AddArrayDefaultToArrayPropertyRector

Adds array default value to property to prevent foreach over null error

 class SomeClass
 {
     /**
      * @var int[]
      */
-    private $values;
+    private $values = [];

     public function isEmpty()
     {
-        return $this->values === null;
+        return $this->values === [];
     }
 }

AddFalseDefaultToBoolPropertyRector

Add false default to bool properties, to prevent null compare errors

 class SomeClass
 {
     /**
      * @var bool
      */
-    private $isDisabled;
+    private $isDisabled = false;
 }

BinarySwitchToIfElseRector

Changes switch with 2 options to if-else

-switch ($foo) {
-    case 'my string':
-        $result = 'ok';
-    break;
-
-    default:
-        $result = 'not ok';
+if ($foo == 'my string') {
+    $result = 'ok';
+} else {
+    $result = 'not ok';
 }

CallUserFuncArrayToVariadicRector

Replace call_user_func_array() with variadic

 class SomeClass
 {
     public function run()
     {
-        call_user_func_array('some_function', $items);
+        some_function(...$items);
     }
 }

CallUserFuncToMethodCallRector

Refactor call_user_func() on known class method to a method call

 final class SomeClass
 {
     public function run()
     {
-        $result = \call_user_func([$this->property, 'method'], $args);
+        $result = $this->property->method($args);
     }
 }

CatchExceptionNameMatchingTypeRector

Type and name of catch exception should match

 class SomeClass
 {
     public function run()
     {
         try {
             // ...
-        } catch (SomeException $typoException) {
-            $typoException->getMessage();
+        } catch (SomeException $someException) {
+            $someException->getMessage();
         }
     }
 }

ConsistentImplodeRector

Changes various implode forms to consistent one

 class SomeClass
 {
     public function run(array $items)
     {
-        $itemsAsStrings = implode($items);
-        $itemsAsStrings = implode($items, '|');
+        $itemsAsStrings = implode('', $items);
+        $itemsAsStrings = implode('|', $items);

         $itemsAsStrings = implode('|', $items);
     }
 }

ConsistentPregDelimiterRector

Replace PREG delimiter with configured one

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\CodingStyle\Rector\FuncCall\ConsistentPregDelimiterRector;
use Rector\Config\RectorConfig;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(ConsistentPregDelimiterRector::class, [
        ConsistentPregDelimiterRector::DELIMITER => '#',
    ]);
};

↓

 class SomeClass
 {
     public function run()
     {
-        preg_match('~value~', $value);
-        preg_match_all('~value~im', $value);
+        preg_match('#value#', $value);
+        preg_match_all('#value#im', $value);
     }
 }

CountArrayToEmptyArrayComparisonRector

Change count array comparison to empty array comparison to improve performance

-count($array) === 0;
-count($array) > 0;
-! count($array);
+$array === [];
+$array !== [];
+$array === [];

DataProviderArrayItemsNewlinedRector

Change data provider in PHPUnit test case to newline per item

 use PHPUnit\Framework\TestCase;

 final class ImageBinaryTest extends TestCase
 {
     /**
      * @dataProvider provideData()
      */
     public function testGetBytesSize(string $content, int $number): void
     {
         // ...
     }

     public static function provideData(): array
     {
-        return [['content', 8], ['content123', 11]];
+        return [
+            ['content', 8],
+            ['content123', 11]
+        ];
     }
 }

EncapsedStringsToSprintfRector

Convert enscaped {$string} to more readable sprintf

 final class SomeClass
 {
     public function run(string $format)
     {
-        return "Unsupported format {$format}";
+        return sprintf('Unsupported format %s', $format);
     }
 }

FuncGetArgsToVariadicParamRector

Refactor func_get_args() in to a variadic param

-function run()
+function run(...$args)
 {
-    $args = \func_get_args();
 }

InlineSimplePropertyAnnotationRector

Inline simple @var annotations (or other annotations) when they are the only thing in the phpdoc

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\CodingStyle\Rector\Property\InlineSimplePropertyAnnotationRector;
use Rector\Config\RectorConfig;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(InlineSimplePropertyAnnotationRector::class, [
        'var',
        'phpstan-var',
    ]);
};

↓

 final class SomeClass
 {
-    /**
-     * @phpstan-var string
-     */
+    /** @phpstan-var string */
     private const TEXT = 'text';

-    /**
-     * @var DateTime[]
-     */
+    /** @var DateTime[] */
     private ?array $dateTimes;
 }

MakeInheritedMethodVisibilitySameAsParentRector

Make method visibility same as parent one

 class ChildClass extends ParentClass
 {
-    public function run()
+    protected function run()
     {
     }
 }

 class ParentClass
 {
     protected function run()
     {
     }
 }

NewlineAfterStatementRector

Add new line after statements to tidify code

 class SomeClass
 {
     public function first()
     {
     }
+
     public function second()
     {
     }
 }

NewlineBeforeNewAssignSetRector

Add extra space before new assign set

 final class SomeClass
 {
     public function run()
     {
         $value = new Value;
         $value->setValue(5);
+
         $value2 = new Value;
         $value2->setValue(1);
     }
 }

NullableCompareToNullRector

Changes negate of empty comparison of nullable value to explicit === or !== compare

 /** @var stdClass|null $value */
-if ($value) {
+if ($value !== null) {
 }

-if (!$value) {
+if ($value === null) {
 }

NullifyUnionNullableRector

Changes already typed Type|null to ?Type

 final class SomeClass
 {

-    private null|stdClass $property;
+    private ?stdClass $property;
 }

OrderAttributesRector

Order attributes by desired names

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\CodingStyle\Rector\ClassMethod\OrderAttributesRector;
use Rector\Config\RectorConfig;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(OrderAttributesRector::class, [
        'First',
        'Second',
    ]);
};

↓

+#[First]
 #[Second]
-#[First]
 class Someclass
 {
 }


<?php

declare(strict_types=1);

use Rector\CodingStyle\Rector\ClassMethod\OrderAttributesRector;
use Rector\Config\RectorConfig;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(OrderAttributesRector::class, [
        'alphabetically',
    ]);
};

↓

+#[AAttribute]
 #[BAttribute]
-#[AAttribute]
 class Someclass
 {
 }

PostIncDecToPreIncDecRector

Use ++$value or --$value instead of $value++ or $value--

 class SomeClass
 {
     public function run($value = 1)
     {
-        $value++; echo $value;
-        $value--; echo $value;
+        ++$value; echo $value;
+        --$value; echo $value;
     }
 }

PreferThisOrSelfMethodCallRector

Changes $this->... and static:: to self:: or vise versa for given types

🔧 configure it!

<?php

declare(strict_types=1);

use PHPUnit\Framework\TestCase;
use Rector\CodingStyle\Rector\MethodCall\PreferThisOrSelfMethodCallRector;
use Rector\Config\RectorConfig;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(PreferThisOrSelfMethodCallRector::class, [
        TestCase::class => 'prefer_self',
    ]);
};

↓

 use PHPUnit\Framework\TestCase;

 final class SomeClass extends TestCase
 {
     public function run()
     {
-        $this->assertEquals('a', 'a');
+        self::assertEquals('a', 'a');
     }
 }

RemoveDoubleUnderscoreInMethodNameRector

Non-magic PHP object methods cannot start with "__"

 class SomeClass
 {
-    public function __getName($anotherObject)
+    public function getName($anotherObject)
     {
-        $anotherObject->__getSurname();
+        $anotherObject->getSurname();
     }
 }

RemoveFinalFromConstRector

Remove final from constants in classes defined as final

 final class SomeClass
 {
-    final public const NAME = 'value';
+    public const NAME = 'value';
 }

ReturnArrayClassMethodToYieldRector

Turns array return to yield return in specific type and method

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\CodingStyle\Rector\ClassMethod\ReturnArrayClassMethodToYieldRector;
use Rector\CodingStyle\ValueObject\ReturnArrayClassMethodToYield;
use Rector\Config\RectorConfig;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(ReturnArrayClassMethodToYieldRector::class, [
        new ReturnArrayClassMethodToYield('PHPUnit\Framework\TestCase', '*provide*'),
    ]);
};

↓

 use PHPUnit\Framework\TestCase;

 final class SomeTest implements TestCase
 {
     public static function provideData()
     {
-        return [['some text']];
+        yield ['some text'];
     }
 }

SeparateMultiUseImportsRector

Split multi use imports and trait statements to standalone lines

-use A, B;
+use A;
+use B;

 class SomeClass
 {
-    use SomeTrait, AnotherTrait;
+    use SomeTrait;
+    use AnotherTrait;
 }

SplitDoubleAssignRector

Split multiple inline assigns to each own lines default value, to prevent undefined array issues

 class SomeClass
 {
     public function run()
     {
-        $one = $two = 1;
+        $one = 1;
+        $two = 1;
     }
 }

SplitGroupedClassConstantsRector

Separate class constant to own lines

 class SomeClass
 {
-    const HI = true, HELLO = 'true';
+    const HI = true;
+    const HELLO = 'true';
 }

SplitGroupedPropertiesRector

Separate grouped properties to own lines

 class SomeClass
 {
     /**
      * @var string
      */
-    public $isIt, $isIsThough;
+    public $isIt;
+
+    /**
+     * @var string
+     */
+    public $isIsThough;
 }

StaticArrowFunctionRector

Changes ArrowFunction to be static when possible

-fn (): string => 'test';
+static fn (): string => 'test';

StaticClosureRector

Changes Closure to be static when possible

-function () {
+static function () {
     if (rand(0, 1)) {
         return 1;
     }

     return 2;
 }

StrictArraySearchRector

Makes array_search search for identical elements

-array_search($value, $items);
+array_search($value, $items, true);

SymplifyQuoteEscapeRector

Prefer quote that are not inside the string

 class SomeClass
 {
     public function run()
     {
-         $name = "\" Tom";
-         $name = '\' Sara';
+         $name = '" Tom';
+         $name = "' Sara";
     }
 }

TernaryConditionVariableAssignmentRector

Assign outcome of ternary condition to variable, where applicable

 function ternary($value)
 {
-    $value ? $a = 1 : $a = 0;
+    $a = $value ? 1 : 0;
 }

UnSpreadOperatorRector

Remove spread operator

 class SomeClass
 {
-    public function run(...$array)
+    public function run(array $array)
     {
     }

     public function execute(array $data)
     {
-        $this->run(...$data);
+        $this->run($data);
     }
 }

UseClassKeywordForClassNameResolutionRector

Use class keyword for class name resolution in string instead of hardcoded string reference

-$value = 'App\SomeClass::someMethod()';
+$value = \App\SomeClass::class . '::someMethod()';

UseIncrementAssignRector

Use ++ increment instead of $var += 1

 class SomeClass
 {
     public function run()
     {
-        $style += 1;
+        ++$style;
     }
 }

VarConstantCommentRector

Constant should have a @var comment with type

 class SomeClass
 {
+    /**
+     * @var string
+     */
     const HI = 'hi';
 }

VersionCompareFuncCallToConstantRector

Changes use of call to version compare function to use of PHP version constant

 class SomeClass
 {
     public function run()
     {
-        version_compare(PHP_VERSION, '5.3.0', '<');
+        PHP_VERSION_ID < 50300;
     }
 }

WrapEncapsedVariableInCurlyBracesRector

Wrap encapsed variables in curly braces

 function run($world)
 {
-    echo "Hello $world!";
+    echo "Hello {$world}!";
 }

Compatibility

AttributeCompatibleAnnotationRector

Change annotation to attribute compatible form, see https://tomasvotruba.com/blog/doctrine-annotations-and-attributes-living-together-in-peace/

-use Doctrine\Common\Annotations\Annotation\Required;
+use Doctrine\Common\Annotations\Annotation\NamedArgumentConstructor;

 /**
  * @annotation
+ * @NamedArgumentConstructor
  */
 class SomeAnnotation
 {
     /**
-     * @var string[]
-     * @Required()
+     * @param string[] $enum
      */
-    public array $enum;
+    public function __construct(
+        public array $enum
+    ) {
+    }
 }

DeadCode

RecastingRemovalRector

Removes recasting of the same type

 $string = '';
-$string = (string) $string;
+$string = $string;

 $array = [];
-$array = (array) $array;
+$array = $array;

RemoveAlwaysTrueIfConditionRector

Remove if condition that is always true

 final class SomeClass
 {
     public function go()
     {
-        if (1 === 1) {
-            return 'yes';
-        }
+        return 'yes';

         return 'no';
     }
 }

RemoveAndTrueRector

Remove and true that has no added value

 class SomeClass
 {
     public function run()
     {
-        return true && 5 === 1;
+        return 5 === 1;
     }
 }

RemoveAnnotationRector

Remove annotation by names

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\DeadCode\Rector\ClassLike\RemoveAnnotationRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(RemoveAnnotationRector::class, [
        'method',
    ]);
};

↓

-/**
- * @method getName()
- */
 final class SomeClass
 {
 }

RemoveConcatAutocastRector

Remove (string) casting when it comes to concat, that does this by default

 class SomeConcatingClass
 {
     public function run($value)
     {
-        return 'hi ' . (string) $value;
+        return 'hi ' . $value;
     }
 }

RemoveDeadConditionAboveReturnRector

Remove dead condition above return

 final class SomeClass
 {
     public function go()
     {
-        if (1 === 1) {
-            return 'yes';
-        }
-
         return 'yes';
     }
 }

RemoveDeadContinueRector

Remove useless continue at the end of loops

 while ($i < 10) {
     ++$i;
-    continue;
 }

RemoveDeadIfForeachForRector

Remove if, foreach and for that does not do anything

 class SomeClass
 {
     public function run($someObject)
     {
         $value = 5;
-        if ($value) {
-        }
-
         if ($someObject->run()) {
-        }
-
-        foreach ($values as $value) {
         }

         return $value;
     }
 }

RemoveDeadInstanceOfRector

Remove dead instanceof check on type hinted variable

 final class SomeClass
 {
     public function go(stdClass $stdClass)
     {
-        if (! $stdClass instanceof stdClass) {
-            return false;
-        }
-
         return true;
     }
 }

RemoveDeadLoopRector

Remove loop with no body

 class SomeClass
 {
     public function run($values)
     {
-        for ($i=1; $i<count($values); ++$i) {
-        }
     }
 }

RemoveDeadReturnRector

Remove last return in the functions, since does not do anything

 class SomeClass
 {
     public function run()
     {
         $shallWeDoThis = true;

         if ($shallWeDoThis) {
             return;
         }
-
-        return;
     }
 }

RemoveDeadStmtRector

Removes dead code statements

-$value = 5;
-$value;
+$value = 5;

RemoveDeadTryCatchRector

Remove dead try/catch

 class SomeClass
 {
     public function run()
     {
-        try {
-            // some code
-        }
-        catch (Throwable $throwable) {
-            throw $throwable;
-        }
     }
 }

RemoveDeadZeroAndOneOperationRector

Remove operation with 1 and 0, that have no effect on the value

 class SomeClass
 {
     public function run()
     {
-        $value = 5 * 1;
-        $value = 5 + 0;
+        $value = 5;
+        $value = 5;
     }
 }

RemoveDelegatingParentCallRector

Removed dead parent call, that does not change anything

 class SomeClass
 {
-    public function prettyPrint(array $stmts): string
-    {
-        return parent::prettyPrint($stmts);
-    }
 }

RemoveDoubleAssignRector

Simplify useless double assigns

-$value = 1;
 $value = 1;

RemoveDuplicatedArrayKeyRector

Remove duplicated key in defined arrays.

 $item = [
-    1 => 'A',
     1 => 'B'
 ];

RemoveDuplicatedCaseInSwitchRector

2 following switch keys with identical will be reduced to one result

 class SomeClass
 {
     public function run()
     {
         switch ($name) {
              case 'clearHeader':
                  return $this->modifyHeader($node, 'remove');
              case 'clearAllHeaders':
-                 return $this->modifyHeader($node, 'replace');
              case 'clearRawHeaders':
                  return $this->modifyHeader($node, 'replace');
              case '...':
                  return 5;
         }
     }
 }

RemoveDuplicatedIfReturnRector

Remove duplicated if stmt with return in function/method body

 class SomeClass
 {
     public function run($value)
     {
         if ($value) {
             return true;
         }

         $value2 = 100;
-
-        if ($value) {
-            return true;
-        }
     }
 }

RemoveDuplicatedInstanceOfRector

Remove duplicated instanceof in one call

 class SomeClass
 {
-    public function run($value)
+    public function run($value): void
     {
-        $isIt = $value instanceof A || $value instanceof A;
-        $isIt = $value instanceof A && $value instanceof A;
+        $isIt = $value instanceof A;
+        $isIt = $value instanceof A;
     }
 }

RemoveEmptyClassMethodRector

Remove empty class methods not required by parents

 class OrphanClass
 {
-    public function __construct()
-    {
-    }
 }

RemoveEmptyMethodCallRector

Remove empty method call

 class SomeClass
 {
     public function callThis()
     {
     }
 }

-$some = new SomeClass();
-$some->callThis();
+$some = new SomeClass();

RemoveJustPropertyFetchForAssignRector

Remove assign of property, just for value assign

 class SomeClass
 {
     private $items = [];

     public function run()
     {
-        $items = $this->items;
-        $items[] = 1000;
-        $this->items = $items ;
+        $this->items[] = 1000;
     }
 }

RemoveJustPropertyFetchRector

Inline property fetch assign to a variable, that has no added value

 final class SomeClass
 {
     private $name;

     public function run()
     {
-        $name = $this->name;
-
-        return $name;
+        return $this->name;
     }
 }

RemoveJustVariableAssignRector

Remove variable just to assign value or return value

 final class SomeClass
 {
     public function run()
     {
-        $result = 100;
-
-        $this->temporaryValue = $result;
+        $this->temporaryValue = 100;
     }
 }

RemoveLastReturnRector

Remove very last return that has no meaning

 function some_function($value)
 {
     if ($value === 1000) {
         return;
     }

     if ($value) {
-        return;
     }
 }

RemoveNonExistingVarAnnotationRector

Removes non-existing @var annotations above the code

 class SomeClass
 {
     public function get()
     {
-        /** @var Training[] $trainings */
         return $this->getData();
     }
 }

RemoveNullPropertyInitializationRector

Remove initialization with null value from property declarations

 class SunshineCommand extends ParentClassWithNewConstructor
 {
-    private $myVar = null;
+    private $myVar;
 }

RemoveParentCallWithoutParentRector

Remove unused parent call with no parent class

 class OrphanClass
 {
     public function __construct()
     {
-         parent::__construct();
     }
 }

RemovePhpVersionIdCheckRector

Remove unneeded PHP_VERSION_ID conditional checks

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\DeadCode\Rector\ConstFetch\RemovePhpVersionIdCheckRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(RemovePhpVersionIdCheckRector::class, [
        80000,
    ]);
};

↓

 class SomeClass
 {
     public function run()
     {
-        if (PHP_VERSION_ID < 80000) {
-            return;
-        }
-
         echo 'do something';
     }
 }

RemoveUnreachableStatementRector

Remove unreachable statements

 class SomeClass
 {
     public function run()
     {
         return 5;
-
-        $removeMe = 10;
     }
 }

RemoveUnusedConstructorParamRector

Remove unused parameter in constructor

 final class SomeClass
 {
     private $hey;

-    public function __construct($hey, $man)
+    public function __construct($hey)
     {
         $this->hey = $hey;
     }
 }

RemoveUnusedForeachKeyRector

Remove unused key in foreach

 $items = [];
-foreach ($items as $key => $value) {
+foreach ($items as $value) {
     $result = $value;
 }

RemoveUnusedNonEmptyArrayBeforeForeachRector

Remove unused if check to non-empty array before foreach of the array

 class SomeClass
 {
     public function run()
     {
         $values = [];
-        if ($values !== []) {
-            foreach ($values as $value) {
-                echo $value;
-            }
+        foreach ($values as $value) {
+            echo $value;
         }
     }
 }

RemoveUnusedPrivateClassConstantRector

Remove unused class constants

 class SomeClass
 {
-    private const SOME_CONST = 'dead';
-
     public function run()
     {
     }
 }

RemoveUnusedPrivateMethodParameterRector

Remove unused parameter, if not required by interface or parent class

 class SomeClass
 {
-    private function run($value, $value2)
+    private function run($value)
     {
          $this->value = $value;
     }
 }

RemoveUnusedPrivateMethodRector

Remove unused private method

 final class SomeController
 {
     public function run()
     {
         return 5;
     }
-
-    private function skip()
-    {
-        return 10;
-    }
 }

RemoveUnusedPrivatePropertyRector

Remove unused private properties

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\DeadCode\Rector\Property\RemoveUnusedPrivatePropertyRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(RemoveUnusedPrivatePropertyRector::class, [
        RemoveUnusedPrivatePropertyRector::REMOVE_ASSIGN_SIDE_EFFECT => true,
    ]);
};

↓

 class SomeClass
 {
-    private $property;
 }

RemoveUnusedPromotedPropertyRector

Remove unused promoted property

 class SomeClass
 {
     public function __construct(
-        private $someUnusedDependency,
         private $usedDependency
     ) {
     }

     public function getUsedDependency()
     {
         return $this->usedDependency;
     }
 }

RemoveUnusedVariableAssignRector

Remove unused assigns to variables

 class SomeClass
 {
     public function run()
     {
-        $value = 5;
     }
 }

RemoveUselessParamTagRector

Remove @param docblock with same type as parameter type

 class SomeClass
 {
     /**
-     * @param string $a
      * @param string $b description
      */
     public function foo(string $a, string $b)
     {
     }
 }

RemoveUselessReturnTagRector

Remove @return docblock with same type as defined in PHP

 use stdClass;

 class SomeClass
 {
-    /**
-     * @return stdClass
-     */
     public function foo(): stdClass
     {
     }
 }

RemoveUselessVarTagRector

Remove unused @var annotation for properties

 final class SomeClass
 {
-    /**
-     * @var string
-     */
     public string $name = 'name';
 }

SimplifyIfElseWithSameContentRector

Remove if/else if they have same content

 class SomeClass
 {
     public function run()
     {
-        if (true) {
-            return 1;
-        } else {
-            return 1;
-        }
+        return 1;
     }
 }

SimplifyMirrorAssignRector

Removes unneeded $value = $value assigns

 function run() {
-    $result = $result;
 }

TargetRemoveClassMethodRector

Remove defined class method

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\DeadCode\Rector\Class_\TargetRemoveClassMethodRector;
use Rector\DeadCode\ValueObject\TargetRemoveClassMethod;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(TargetRemoveClassMethodRector::class, [
        new TargetRemoveClassMethod('SomeClass', 'run'),
    ]);
};

↓

 class SomeClass
 {
-    public function run()
-    {
-    }
 }

TernaryToBooleanOrFalseToBooleanAndRector

Change ternary of bool : false to && bool

 class SomeClass
 {
     public function go()
     {
-        return $value ? $this->getBool() : false;
+        return $value && $this->getBool();
     }

     private function getBool(): bool
     {
         return (bool) 5;
     }
 }

UnwrapFutureCompatibleIfPhpVersionRector

Remove php version checks if they are passed

 // current PHP: 7.2
-if (version_compare(PHP_VERSION, '7.2', '<')) {
-    return 'is PHP 7.1-';
-} else {
-    return 'is PHP 7.2+';
-}
+return 'is PHP 7.2+';

DependencyInjection

ActionInjectionToConstructorInjectionRector

Turns action injection in Controllers to constructor injection

 final class SomeController
 {
-    public function default(ProductRepository $productRepository)
+    public function __construct(
+        private ProductRepository $productRepository
+    ) {
+    }
+
+    public function default()
     {
-        $products = $productRepository->fetchAll();
+        $products = $this->productRepository->fetchAll();
     }
 }

AddMethodParentCallRector

Add method parent call, in case new parent method is added

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\DependencyInjection\Rector\ClassMethod\AddMethodParentCallRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(AddMethodParentCallRector::class, [
        'ParentClassWithNewConstructor' => '__construct',
    ]);
};

↓

 class SunshineCommand extends ParentClassWithNewConstructor
 {
     public function __construct()
     {
         $value = 5;
+
+        parent::__construct();
     }
 }

EarlyReturn

ChangeAndIfToEarlyReturnRector

Changes if && to early return

 class SomeClass
 {
     public function canDrive(Car $car)
     {
-        if ($car->hasWheels && $car->hasFuel) {
-            return true;
+        if (! $car->hasWheels) {
+            return false;
         }

-        return false;
+        if (! $car->hasFuel) {
+            return false;
+        }
+
+        return true;
     }
 }

ChangeIfElseValueAssignToEarlyReturnRector

Change if/else value to early return

 class SomeClass
 {
     public function run()
     {
         if ($this->hasDocBlock($tokens, $index)) {
-            $docToken = $tokens[$this->getDocBlockIndex($tokens, $index)];
-        } else {
-            $docToken = null;
+            return $tokens[$this->getDocBlockIndex($tokens, $index)];
         }
-
-        return $docToken;
+        return null;
     }
 }

ChangeNestedForeachIfsToEarlyContinueRector

Change nested ifs to foreach with continue

 class SomeClass
 {
     public function run()
     {
         $items = [];

         foreach ($values as $value) {
-            if ($value === 5) {
-                if ($value2 === 10) {
-                    $items[] = 'maybe';
-                }
+            if ($value !== 5) {
+                continue;
             }
+            if ($value2 !== 10) {
+                continue;
+            }
+
+            $items[] = 'maybe';
         }
     }
 }

ChangeNestedIfsToEarlyReturnRector

Change nested ifs to early return

 class SomeClass
 {
     public function run()
     {
-        if ($value === 5) {
-            if ($value2 === 10) {
-                return 'yes';
-            }
+        if ($value !== 5) {
+            return 'no';
+        }
+
+        if ($value2 === 10) {
+            return 'yes';
         }

         return 'no';
     }
 }

ChangeOrIfContinueToMultiContinueRector

Changes if || to early return

 class SomeClass
 {
     public function canDrive(Car $newCar)
     {
         foreach ($cars as $car) {
-            if ($car->hasWheels() || $car->hasFuel()) {
+            if ($car->hasWheels()) {
+                continue;
+            }
+            if ($car->hasFuel()) {
                 continue;
             }

             $car->setWheel($newCar->wheel);
             $car->setFuel($newCar->fuel);
         }
     }
 }

ChangeOrIfReturnToEarlyReturnRector

Changes if || with return to early return

 class SomeClass
 {
     public function run($a, $b)
     {
-        if ($a || $b) {
+        if ($a) {
+            return null;
+        }
+        if ($b) {
             return null;
         }

         return 'another';
     }
 }

PreparedValueToEarlyReturnRector

Return early prepared value in ifs

 class SomeClass
 {
     public function run()
     {
-        $var = null;
-
         if (rand(0,1)) {
-            $var = 1;
+            return 1;
         }

         if (rand(0,1)) {
-            $var = 2;
+            return 2;
         }

-        return $var;
+        return null;
     }
 }

RemoveAlwaysElseRector

Split if statement, when if condition always break execution flow

 class SomeClass
 {
     public function run($value)
     {
         if ($value) {
             throw new \InvalidStateException;
-        } else {
-            return 10;
         }
+
+        return 10;
     }
 }

ReturnBinaryAndToEarlyReturnRector

Changes Single return of && to early returns

 class SomeClass
 {
     public function accept()
     {
-        return $this->something() && $this->somethingelse();
+        if (! $this->something()) {
+            return false;
+        }
+
+        return (bool) $this->somethingelse();
     }
 }

ReturnBinaryOrToEarlyReturnRector

Changes Single return of || to early returns

 class SomeClass
 {
     public function accept()
     {
-        return $this->something() || $this->somethingElse();
+        if ($this->something()) {
+            return true;
+        }
+        return (bool) $this->somethingElse();
     }
 }

ReturnEarlyIfVariableRector

Replace if conditioned variable override with direct return

 final class SomeClass
 {
     public function run($value)
     {
         if ($value === 50) {
-            $value = 100;
+            return 100;
         }

         return $value;
     }
 }

MysqlToMysqli

MysqlAssignToMysqliRector

Converts more complex mysql functions to mysqli

-$data = mysql_db_name($result, $row);
+mysqli_data_seek($result, $row);
+$fetch = mysql_fetch_row($result);
+$data = $fetch[0];

MysqlFuncCallToMysqliRector

Converts more complex mysql functions to mysqli

-mysql_drop_db($database);
+mysqli_query('DROP DATABASE ' . $database);

MysqlPConnectToMysqliConnectRector

Replace mysql_pconnect() with mysqli_connect() with host p: prefix

 final class SomeClass
 {
     public function run($host, $username, $password)
     {
-        return mysql_pconnect($host, $username, $password);
+        return mysqli_connect('p:' . $host, $username, $password);
     }
 }

MysqlQueryMysqlErrorWithLinkRector

Add mysql_query and mysql_error with connection

 class SomeClass
 {
     public function run()
     {
         $conn = mysqli_connect('host', 'user', 'pass');

-        mysql_error();
+        mysqli_error($conn);
         $sql = 'SELECT';

-        return mysql_query($sql);
+        return mysqli_query($conn, $sql);
     }
 }

Naming

RenameForeachValueVariableToMatchExprVariableRector

Renames value variable name in foreach loop to match expression variable

 class SomeClass
 {
     public function run()
     {
         $array = [];
-        foreach ($variables as $property) {
-            $array[] = $property;
+        foreach ($variables as $variable) {
+            $array[] = $variable;
         }
     }
 }

RenameForeachValueVariableToMatchMethodCallReturnTypeRector

Renames value variable name in foreach loop to match method type

 class SomeClass
 {
     public function run()
     {
         $array = [];
-        foreach ($object->getMethods() as $property) {
-            $array[] = $property;
+        foreach ($object->getMethods() as $method) {
+            $array[] = $method;
         }
     }
 }

RenameParamToMatchTypeRector

Rename param to match ClassType

 final class SomeClass
 {
-    public function run(Apple $pie)
+    public function run(Apple $apple)
     {
-        $food = $pie;
+        $food = $apple;
     }
 }

RenamePropertyToMatchTypeRector

Rename property and method param to match its type

 class SomeClass
 {
     /**
      * @var EntityManager
      */
-    private $eventManager;
+    private $entityManager;

-    public function __construct(EntityManager $eventManager)
+    public function __construct(EntityManager $entityManager)
     {
-        $this->eventManager = $eventManager;
+        $this->entityManager = $entityManager;
     }
 }

RenameVariableToMatchMethodCallReturnTypeRector

Rename variable to match method return type

 class SomeClass
 {
 public function run()
 {
-    $a = $this->getRunner();
+    $runner = $this->getRunner();
 }

 public function getRunner(): Runner
 {
     return new Runner();
 }
 }

RenameVariableToMatchNewTypeRector

Rename variable to match new ClassType

 final class SomeClass
 {
     public function run()
     {
-        $search = new DreamSearch();
-        $search->advance();
+        $dreamSearch = new DreamSearch();
+        $dreamSearch->advance();
     }
 }

PSR4

MultipleClassFileToPsr4ClassesRector

Change multiple classes in one file to standalone PSR-4 classes.

+// new file: "app/Exceptions/FirstException.php"
 namespace App\Exceptions;

 use Exception;

 final class FirstException extends Exception
 {
 }
+
+// new file: "app/Exceptions/SecondException.php"
+namespace App\Exceptions;
+
+use Exception;

 final class SecondException extends Exception
 {
 }

NormalizeNamespaceByPSR4ComposerAutoloadRector

Adds namespace to namespace-less files or correct namespace to match PSR-4 in composer.json autoload section. Run with combination with "Rector\PSR4\Rector\Namespace_\MultipleClassFileToPsr4ClassesRector"

{
    "autoload": {
        "psr-4": {
            "App\\CustomNamespace\\": "src"
        }
    }
}

↓

 // src/SomeClass.php

+namespace App\CustomNamespace;
+
 class SomeClass
 {
 }

Php52

ContinueToBreakInSwitchRector

Use break instead of continue in switch statements

 function some_run($value)
 {
     switch ($value) {
         case 1:
             echo 'Hi';
-            continue;
+            break;
         case 2:
             echo 'Hello';
             break;
     }
 }

VarToPublicPropertyRector

Change property modifier from var to public

 final class SomeController
 {
-    var $name = 'Tom';
+    public $name = 'Tom';
 }

Php53

DirNameFileConstantToDirConstantRector

Convert dirname(FILE) to DIR

 class SomeClass
 {
     public function run()
     {
-        return dirname(__FILE__);
+        return __DIR__;
     }
 }

ReplaceHttpServerVarsByServerRector

Rename old $HTTP_* variable names to new replacements

-$serverVars = $HTTP_SERVER_VARS;
+$serverVars = $_SERVER;

TernaryToElvisRector

Use ?: instead of ?, where useful

 function elvis()
 {
-    $value = $a ? $a : false;
+    $value = $a ?: false;
 }

Php54

LongArrayToShortArrayRector

Long array to short array

 class SomeClass
 {
     public function run()
     {
-        return array();
+        return [];
     }
 }

RemoveReferenceFromCallRector

Remove & from function and method calls

 final class SomeClass
 {
     public function run($one)
     {
-        return strlen(&$one);
+        return strlen($one);
     }
 }

RemoveZeroBreakContinueRector

Remove 0 from break and continue

 class SomeClass
 {
     public function run($random)
     {
-        continue 0;
-        break 0;
+        continue;
+        break;

         $five = 5;
-        continue $five;
+        continue 5;

-        break $random;
+        break;
     }
 }

Php55

ClassConstantToSelfClassRector

Change __CLASS__ to self::class

 class SomeClass
 {
    public function callOnMe()
    {
-       var_dump(__CLASS__);
+       var_dump(self::class);
    }
 }

GetCalledClassToSelfClassRector

Change get_called_class() to self::class on final class

 final class SomeClass
 {
    public function callOnMe()
    {
-       var_dump(get_called_class());
+       var_dump(self::class);
    }
 }

GetCalledClassToStaticClassRector

Change get_called_class() to static::class on non-final class

 class SomeClass
 {
    public function callOnMe()
    {
-       var_dump(get_called_class());
+       var_dump(static::class);
    }
 }

PregReplaceEModifierRector

The /e modifier is no longer supported, use preg_replace_callback instead

 class SomeClass
 {
     public function run()
     {
-        $comment = preg_replace('~\b(\w)(\w+)~e', '"$1".strtolower("$2")', $comment);
+        $comment = preg_replace_callback('~\b(\w)(\w+)~', function ($matches) {
+              return($matches[1].strtolower($matches[2]));
+        }, $comment);
     }
 }

StringClassNameToClassConstantRector

Replace string class names by ::class constant

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Php55\Rector\String_\StringClassNameToClassConstantRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(StringClassNameToClassConstantRector::class, [
        'ClassName',
        'AnotherClassName',
    ]);
};

↓

 class AnotherClass
 {
 }

 class SomeClass
 {
     public function run()
     {
-        return 'AnotherClass';
+        return \AnotherClass::class;
     }
 }

Php56

AddDefaultValueForUndefinedVariableRector

Adds default value for undefined variable

 class SomeClass
 {
     public function run()
     {
+        $a = null;
         if (rand(0, 1)) {
             $a = 5;
         }
         echo $a;
     }
 }

PowToExpRector

Changes pow(val, val2) to ** (exp) parameter

-pow(1, 2);
+1**2;

Php70

BreakNotInLoopOrSwitchToReturnRector

Convert break outside for/foreach/switch context to return

 class SomeClass
 {
     public function run()
     {
         if ($isphp5)
             return 1;
         else
             return 2;
-        break;
+        return;
     }
 }

CallUserMethodRector

Changes call_user_method()/call_user_method_array() to call_user_func()/call_user_func_array()

-call_user_method($method, $obj, "arg1", "arg2");
+call_user_func(array(&$obj, "method"), "arg1", "arg2");

EmptyListRector

list() cannot be empty

-'list() = $values;'
+'list($unusedGenerated) = $values;'

EregToPregMatchRector

Changes ereg*() to preg*() calls

-ereg("hi")
+preg_match("#hi#");

ExceptionHandlerTypehintRector

Change typehint from Exception to Throwable.

-function handler(Exception $exception) { ... }
+function handler(Throwable $exception) { ... }
 set_exception_handler('handler');

IfToSpaceshipRector

Changes if/else to spaceship <=> where useful

 class SomeClass
 {
     public function run()
     {
         usort($languages, function ($a, $b) {
-            if ($a[0] === $b[0]) {
-                return 0;
-            }
-
-            return ($a[0] < $b[0]) ? 1 : -1;
+            return $b[0] <=> $a[0];
         });
     }
 }

ListSplitStringRector

list() cannot split string directly anymore, use str_split()

-list($foo) = "string";
+list($foo) = str_split("string");

ListSwapArrayOrderRector

list() assigns variables in reverse order - relevant in array assign

-list($a[], $a[]) = [1, 2];
+list($a[], $a[]) = array_reverse([1, 2]);

MultiDirnameRector

Changes multiple dirname() calls to one with nesting level

-dirname(dirname($path));
+dirname($path, 2);

Php4ConstructorRector

Changes PHP 4 style constructor to __construct.

 class SomeClass
 {
-    public function SomeClass()
+    public function __construct()
     {
     }
 }

RandomFunctionRector

Changes rand, srand and getrandmax by new mt_* alternatives.

-rand();
+mt_rand();

ReduceMultipleDefaultSwitchRector

Remove first default switch, that is ignored

 switch ($expr) {
     default:
-         echo "Hello World";
-
-    default:
          echo "Goodbye Moon!";
          break;
 }

RenameMktimeWithoutArgsToTimeRector

Renames mktime() without arguments to time()

 class SomeClass
 {
     public function run()
     {
         $time = mktime(1, 2, 3);
-        $nextTime = mktime();
+        $nextTime = time();
     }
 }

StaticCallOnNonStaticToInstanceCallRector

Changes static call to instance call, where not useful

 class Something
 {
     public function doWork()
     {
     }
 }

 class Another
 {
     public function run()
     {
-        return Something::doWork();
+        return (new Something)->doWork();
     }
 }

TernaryToNullCoalescingRector

Changes unneeded null check to ?? operator

-$value === null ? 10 : $value;
+$value ?? 10;


-isset($value) ? $value : 10;
+$value ?? 10;

TernaryToSpaceshipRector

Use <=> spaceship instead of ternary with same effect

 function order_func($a, $b) {
-    return ($a < $b) ? -1 : (($a > $b) ? 1 : 0);
+    return $a <=> $b;
 }

ThisCallOnStaticMethodToStaticCallRector

Changes $this->call() to static method to static call

 class SomeClass
 {
     public static function run()
     {
-        $this->eat();
+        static::eat();
     }

     public static function eat()
     {
     }
 }

WrapVariableVariableNameInCurlyBracesRector

Ensure variable variables are wrapped in curly braces

 function run($foo)
 {
-    global $$foo->bar;
+    global ${$foo->bar};
 }

Php71

AssignArrayToStringRector

String cannot be turned into array by assignment anymore

-$string = '';
+$string = [];
 $string[] = 1;

BinaryOpBetweenNumberAndStringRector

Change binary operation between some number + string to PHP 7.1 compatible version

 class SomeClass
 {
     public function run()
     {
-        $value = 5 + '';
-        $value = 5.0 + 'hi';
+        $value = 5 + 0;
+        $value = 5.0 + 0;
     }
 }

CountOnNullRector

Changes count() on null to safe ternary check

 $values = null;
-$count = count($values);
+$count = $values === null ? 0 : count($values);

IsIterableRector

Changes is_array + Traversable check to is_iterable

-is_array($foo) || $foo instanceof Traversable;
+is_iterable($foo);

ListToArrayDestructRector

Change list() to array destruct

 class SomeClass
 {
     public function run()
     {
-        list($id1, $name1) = $data;
+        [$id1, $name1] = $data;

-        foreach ($data as list($id, $name)) {
+        foreach ($data as [$id, $name]) {
         }
     }
 }

MultiExceptionCatchRector

Changes multi catch of same exception to single one | separated.

 try {
     // Some code...
-} catch (ExceptionType1 $exception) {
-    $sameCode;
-} catch (ExceptionType2 $exception) {
+} catch (ExceptionType1 | ExceptionType2 $exception) {
     $sameCode;
 }

PublicConstantVisibilityRector

Add explicit public constant visibility.

 class SomeClass
 {
-    const HEY = 'you';
+    public const HEY = 'you';
 }

RemoveExtraParametersRector

Remove extra parameters

-strlen("asdf", 1);
+strlen("asdf");

ReservedObjectRector

Changes reserved "Object" name to "Object" where can be configured

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Php71\Rector\Name\ReservedObjectRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(ReservedObjectRector::class, [
        'ReservedObject' => 'SmartObject',
        'Object' => 'AnotherSmartObject',
    ]);
};

↓

-class Object
+class SmartObject
 {
 }

Php72

CreateFunctionToAnonymousFunctionRector

Use anonymous functions instead of deprecated create_function()

 class ClassWithCreateFunction
 {
     public function run()
     {
-        $callable = create_function('$matches', "return '$delimiter' . strtolower(\$matches[1]);");
+        $callable = function($matches) use ($delimiter) {
+            return $delimiter . strtolower($matches[1]);
+        };
     }
 }

GetClassOnNullRector

Null is no more allowed in get_class()

 final class SomeClass
 {
     public function getItem()
     {
         $value = null;
-        return get_class($value);
+        return $value !== null ? get_class($value) : self::class;
     }
 }

IsObjectOnIncompleteClassRector

Incomplete class returns inverted bool on is_object()

 $incompleteObject = new __PHP_Incomplete_Class;
-$isObject = is_object($incompleteObject);
+$isObject = ! is_object($incompleteObject);

ListEachRector

each() function is deprecated, use key() and current() instead

-list($key, $callback) = each($callbacks);
+$key = key($callbacks);
+$callback = current($callbacks);
+next($callbacks);

ParseStrWithResultArgumentRector

Use $result argument in parse_str() function

-parse_str($this->query);
-$data = get_defined_vars();
+parse_str($this->query, $result);
+$data = $result;

ReplaceEachAssignmentWithKeyCurrentRector

Replace each() assign outside loop

 $array = ['b' => 1, 'a' => 2];
-$eachedArray = each($array);
+$eachedArray[1] = current($array);
+$eachedArray['value'] = current($array);
+$eachedArray[0] = key($array);
+$eachedArray['key'] = key($array);
+next($array);

StringifyDefineRector

Make first argument of define() string

 class SomeClass
 {
     public function run(int $a)
     {
-         define(CONSTANT_2, 'value');
+         define('CONSTANT_2', 'value');
          define('CONSTANT', 'value');
     }
 }

StringsAssertNakedRector

String asserts must be passed directly to assert()

 function nakedAssert()
 {
-    assert('true === true');
-    assert("true === true");
+    assert(true === true);
+    assert(true === true);
 }

UnsetCastRector

Removes (unset) cast

-$different = (unset) $value;
+$different = null;

-$value = (unset) $value;
+unset($value);

WhileEachToForeachRector

each() function is deprecated, use foreach() instead.

-while (list($key, $callback) = each($callbacks)) {
+foreach ($callbacks as $key => $callback) {
     // ...
 }


-while (list($key) = each($callbacks)) {
+foreach (array_keys($callbacks) as $key) {
     // ...
 }

Php73

ArrayKeyFirstLastRector

Make use of array_key_first() and array_key_last()

-reset($items);
-$firstKey = key($items);
+$firstKey = array_key_first($items);


-end($items);
-$lastKey = key($items);
+$lastKey = array_key_last($items);

IsCountableRector

Changes is_array + Countable check to is_countable

-is_array($foo) || $foo instanceof Countable;
+is_countable($foo);

JsonThrowOnErrorRector

Adds JSON_THROW_ON_ERROR to json_encode() and json_decode() to throw JsonException on error

-json_encode($content);
-json_decode($json);
+json_encode($content, JSON_THROW_ON_ERROR);
+json_decode($json, null, 512, JSON_THROW_ON_ERROR);

RegexDashEscapeRector

Escape - in some cases

-preg_match("#[\w-()]#", 'some text');
+preg_match("#[\w\-()]#", 'some text');

SensitiveConstantNameRector

Changes case insensitive constants to sensitive ones.

 define('FOO', 42, true);
 var_dump(FOO);
-var_dump(foo);
+var_dump(FOO);

SensitiveDefineRector

Changes case insensitive constants to sensitive ones.

-define('FOO', 42, true);
+define('FOO', 42);

SensitiveHereNowDocRector

Changes heredoc/nowdoc that contains closing word to safe wrapper name

-$value = <<<A
+$value = <<<A_WRAP
     A
-A
+A_WRAP

SetCookieRector

Convert setcookie argument to PHP7.3 option array

-setcookie('name', $value, 360);
+setcookie('name', $value, ['expires' => 360]);


-setcookie('name', $name, 0, '', '', true, true);
+setcookie('name', $name, ['expires' => 0, 'path' => '', 'domain' => '', 'secure' => true, 'httponly' => true]);

StringifyStrNeedlesRector

Makes needles explicit strings

 $needle = 5;
-$fivePosition = strpos('725', $needle);
+$fivePosition = strpos('725', (string) $needle);

Php74

AddLiteralSeparatorToNumberRector

Add "_" as thousands separator in numbers for higher or equals to limitValue config

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Php74\Rector\LNumber\AddLiteralSeparatorToNumberRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(AddLiteralSeparatorToNumberRector::class, [
        AddLiteralSeparatorToNumberRector::LIMIT_VALUE => 1000000,
    ]);
};

↓

 class SomeClass
 {
     public function run()
     {
-        $int = 500000;
-        $float = 1000500.001;
+        $int = 500_000;
+        $float = 1_000_500.001;
     }
 }

ArrayKeyExistsOnPropertyRector

Change array_key_exists() on property to property_exists()

 class SomeClass
 {
      public $value;
 }
 $someClass = new SomeClass;

-array_key_exists('value', $someClass);
+property_exists($someClass, 'value');

ArraySpreadInsteadOfArrayMergeRector

Change array_merge() to spread operator

 class SomeClass
 {
     public function run($iter1, $iter2)
     {
-        $values = array_merge(iterator_to_array($iter1), iterator_to_array($iter2));
+        $values = [...$iter1, ...$iter2];

         // Or to generalize to all iterables
-        $anotherValues = array_merge(
-            is_array($iter1) ? $iter1 : iterator_to_array($iter1),
-            is_array($iter2) ? $iter2 : iterator_to_array($iter2)
-        );
+        $anotherValues = [...$iter1, ...$iter2];
     }
 }

ChangeReflectionTypeToStringToGetNameRector

Change string calls on ReflectionType

 class SomeClass
 {
     public function go(ReflectionFunction $reflectionFunction)
     {
         $parameterReflection = $reflectionFunction->getParameters()[0];

-        $paramType = (string) $parameterReflection->getType();
+        $paramType = (string) ($parameterReflection->getType() ? $parameterReflection->getType()->getName() : null);

-        $stringValue = 'hey' . $reflectionFunction->getReturnType();
+        $stringValue = 'hey' . ($reflectionFunction->getReturnType() ? $reflectionFunction->getReturnType()->getName() : null);

         // keep
         return $reflectionFunction->getReturnType();
     }
 }

ClosureToArrowFunctionRector

Change closure to arrow function

 class SomeClass
 {
     public function run($meetups)
     {
-        return array_filter($meetups, function (Meetup $meetup) {
-            return is_object($meetup);
-        });
+        return array_filter($meetups, fn(Meetup $meetup) => is_object($meetup));
     }
 }

CurlyToSquareBracketArrayStringRector

Change curly based array and string to square bracket

 $string = 'test';
-echo $string{0};
+echo $string[0];
 $array = ['test'];
-echo $array{0};
+echo $array[0];

ExportToReflectionFunctionRector

Change export() to ReflectionFunction alternatives

-$reflectionFunction = ReflectionFunction::export('foo');
-$reflectionFunctionAsString = ReflectionFunction::export('foo', true);
+$reflectionFunction = new ReflectionFunction('foo');
+$reflectionFunctionAsString = (string) new ReflectionFunction('foo');

FilterVarToAddSlashesRector

Change filter_var() with slash escaping to addslashes()

 $var= "Satya's here!";
-filter_var($var, FILTER_SANITIZE_MAGIC_QUOTES);
+addslashes($var);

MbStrrposEncodingArgumentPositionRector

Change mb_strrpos() encoding argument position

-mb_strrpos($text, "abc", "UTF-8");
+mb_strrpos($text, "abc", 0, "UTF-8");

MoneyFormatToNumberFormatRector

Change money_format() to equivalent number_format()

-$value = money_format('%i', $value);
+$roundedValue = round($value, 2, PHP_ROUND_HALF_ODD);
+$value = number_format($roundedValue, 2, '.', '');

NullCoalescingOperatorRector

Use null coalescing operator ??=

 $array = [];
-$array['user_id'] = $array['user_id'] ?? 'value';
+$array['user_id'] ??= 'value';

ParenthesizeNestedTernaryRector

Add parentheses to nested ternary

-$value = $a ? $b : $a ?: null;
+$value = ($a ? $b : $a) ?: null;

RealToFloatTypeCastRector

Change deprecated (real) to (float)

 class SomeClass
 {
     public function run()
     {
-        $number = (real) 5;
+        $number = (float) 5;
         $number = (float) 5;
         $number = (double) 5;
     }
 }

RestoreDefaultNullToNullableTypePropertyRector

Add null default to properties with PHP 7.4 property nullable type

 class SomeClass
 {
-    public ?string $name;
+    public ?string $name = null;
 }

Php80

AddParamBasedOnParentClassMethodRector

Add missing parameter based on parent class method

 class A
 {
     public function execute($foo)
     {
     }
 }

 class B extends A{
-    public function execute()
+    public function execute($foo)
     {
     }
 }

AnnotationToAttributeRector

Change annotation to attribute

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Php80\Rector\Class_\AnnotationToAttributeRector;
use Rector\Php80\ValueObject\AnnotationToAttribute;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(AnnotationToAttributeRector::class, [
        new AnnotationToAttribute('Symfony\Component\Routing\Annotation\Route'),
    ]);
};

↓

 use Symfony\Component\Routing\Annotation\Route;

 class SymfonyRoute
 {
-    /**
-     * @Route("/path", name="action")
-     */
+    #[Route(path: '/path', name: 'action')]
     public function action()
     {
     }
 }

ChangeSwitchToMatchRector

Change switch() to match()

-switch ($input) {
-    case Lexer::T_SELECT:
-        $statement = 'select';
-        break;
-    case Lexer::T_UPDATE:
-        $statement = 'update';
-        break;
-    default:
-        $statement = 'error';
-}
+$statement = match ($input) {
+    Lexer::T_SELECT => 'select',
+    Lexer::T_UPDATE => 'update',
+    default => 'error',
+};

ClassOnObjectRector

Change get_class($object) to faster $object::class

 class SomeClass
 {
     public function run($object)
     {
-        return get_class($object);
+        return $object::class;
     }
 }

ClassOnThisVariableObjectRector

Change $this::class to static::class or self::class depends on class modifier

 class SomeClass
 {
     public function run()
     {
-        return $this::class;
+        return static::class;
     }
 }

ClassPropertyAssignToConstructorPromotionRector

Change simple property init and assign to constructor promotion

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Php80\Rector\Class_\ClassPropertyAssignToConstructorPromotionRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(ClassPropertyAssignToConstructorPromotionRector::class, [
        ClassPropertyAssignToConstructorPromotionRector::INLINE_PUBLIC => false,
    ]);
};

↓

 class SomeClass
 {
-    public float $someVariable;
-
     public function __construct(
-        float $someVariable = 0.0
+        public float $someVariable = 0.0
     ) {
-        $this->someVariable = $someVariable;
     }
 }

DoctrineAnnotationClassToAttributeRector

Refactor Doctrine @annotation annotated class to a PHP 8.0 attribute class

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Php80\Rector\Class_\DoctrineAnnotationClassToAttributeRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(DoctrineAnnotationClassToAttributeRector::class, [
        DoctrineAnnotationClassToAttributeRector::REMOVE_ANNOTATIONS => true,
    ]);
};

↓

-use Doctrine\Common\Annotations\Annotation\Target;
+use Attribute;

-/**
- * @Annotation
- * @Target({"METHOD"})
- */
+#[Attribute(Attribute::TARGET_METHOD)]
 class SomeAnnotation
 {
 }

FinalPrivateToPrivateVisibilityRector

Changes method visibility from final private to only private

 class SomeClass
 {
-    final private function getter() {
+    private function getter() {
         return $this;
     }
 }

GetDebugTypeRector

Change ternary type resolve to get_debug_type()

 class SomeClass
 {
     public function run($value)
     {
-        return is_object($value) ? get_class($value) : gettype($value);
+        return get_debug_type($value);
     }
 }

MixedTypeRector

Change mixed docs type to mixed typed

 class SomeClass
 {
-    /**
-     * @param mixed $param
-     */
-    public function run($param)
+    public function run(mixed $param)
     {
     }
 }

NestedAnnotationToAttributeRector

Changed nested annotations to attributes

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Php80\Rector\Property\NestedAnnotationToAttributeRector;
use Rector\Php80\ValueObject\AnnotationPropertyToAttributeClass;
use Rector\Php80\ValueObject\NestedAnnotationToAttribute;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(NestedAnnotationToAttributeRector::class, [
        [
            new NestedAnnotationToAttribute([
                new AnnotationPropertyToAttributeClass('Doctrine\ORM\Mapping\JoinColumn', 'joinColumns', false),
                new AnnotationPropertyToAttributeClass('Doctrine\ORM\Mapping\InverseJoinColumn', 'inverseJoinColumns', false),
            ], 'Doctrine\ORM\Mapping\JoinTable', false),
        ],
    ]);
};

↓

 use Doctrine\ORM\Mapping as ORM;

 class SomeEntity
 {
-    /**
-     * @ORM\JoinTable(name="join_table_name",
-     *     joinColumns={@ORM\JoinColumn(name="origin_id")},
-     *     inverseJoinColumns={@ORM\JoinColumn(name="target_id")}
-     * )
-     */
+    #[ORM\JoinTable(name: 'join_table_name')]
+    #[ORM\JoinColumn(name: 'origin_id')]
+    #[ORM\InverseJoinColumn(name: 'target_id')]
     private $collection;
 }

Php8ResourceReturnToObjectRector

Change is_resource() to instanceof Object

 class SomeClass
 {
     public function run()
     {
         $ch = curl_init();
-        is_resource($ch);
+        $ch instanceof \CurlHandle;
     }
 }

RemoveUnusedVariableInCatchRector

Remove unused variable in catch()

 final class SomeClass
 {
     public function run()
     {
         try {
-        } catch (Throwable $notUsedThrowable) {
+        } catch (Throwable) {
         }
     }
 }

SetStateToStaticRector

Adds static visibility to __set_state() methods

 class SomeClass
 {
-    public function __set_state($properties) {
+    public static function __set_state($properties) {

     }
 }

StrContainsRector

Replace strpos() !== false and strstr() with str_contains()

 class SomeClass
 {
     public function run()
     {
-        return strpos('abc', 'a') !== false;
+        return str_contains('abc', 'a');
     }
 }

StrEndsWithRector

Change helper functions to str_ends_with()

 class SomeClass
 {
     public function run()
     {
-        $isMatch = substr($haystack, -strlen($needle)) === $needle;
+        $isMatch = str_ends_with($haystack, $needle);

-        $isNotMatch = substr($haystack, -strlen($needle)) !== $needle;
+        $isNotMatch = !str_ends_with($haystack, $needle);
     }
 }


 class SomeClass
 {
     public function run()
     {
-        $isMatch = substr($haystack, -9) === 'hardcoded;
+        $isMatch = str_ends_with($haystack, 'hardcoded');

-        $isNotMatch = substr($haystack, -9) !== 'hardcoded';
+        $isNotMatch = !str_ends_with($haystack, 'hardcoded');
     }
 }

StrStartsWithRector

Change helper functions to str_starts_with()

 class SomeClass
 {
     public function run()
     {
-        $isMatch = substr($haystack, 0, strlen($needle)) === $needle;
+        $isMatch = str_starts_with($haystack, $needle);

-        $isNotMatch = substr($haystack, 0, strlen($needle)) !== $needle;
+        $isNotMatch = ! str_starts_with($haystack, $needle);
     }
 }

StringableForToStringRector

Add Stringable interface to classes with __toString() method

-class SomeClass
+class SomeClass implements Stringable
 {
-    public function __toString()
+    public function __toString(): string
     {
         return 'I can stringz';
     }
 }

TokenGetAllToObjectRector

Convert token_get_all to PhpToken::tokenize

 final class SomeClass
 {
     public function run()
     {
-        $tokens = token_get_all($code);
-        foreach ($tokens as $token) {
-            if (is_array($token)) {
-               $name = token_name($token[0]);
-               $text = $token[1];
-            } else {
-               $name = null;
-               $text = $token;
-            }
+        $tokens = \PhpToken::tokenize($code);
+        foreach ($tokens as $phpToken) {
+           $name = $phpToken->getTokenName();
+           $text = $phpToken->text;
         }
     }
 }

UnionTypesRector

Change docs types to union types, where possible (properties are covered by TypedPropertiesRector)

 class SomeClass
 {
-    /**
-     * @param array|int $number
-     * @return bool|float
-     */
-    public function go($number)
+    public function go(array|int $number): bool|float
     {
     }
 }

Php81

ConstantListClassToEnumRector

Upgrade constant list classes to full blown enum

-class Direction
+enum Direction
 {
-    public const LEFT = 'left';
+    case LEFT;

-    public const RIGHT = 'right';
+    case RIGHT;
 }

FinalizePublicClassConstantRector

Add final to constants that does not have children

 class SomeClass
 {
-    public const NAME = 'value';
+    final public const NAME = 'value';
 }

FirstClassCallableRector

Upgrade array callable to first class callable

 final class SomeClass
 {
     public function run()
     {
-        $name = [$this, 'name'];
+        $name = $this->name(...);
     }

     public function name()
     {
     }
 }

IntersectionTypesRector

Change docs to intersection types, where possible (properties are covered by TypedPropertyRector (@todo))

 final class SomeClass
 {
-    /**
-     * @param Foo&Bar $types
-     */
-    public function process($types)
+    public function process(Foo&Bar $types)
     {
     }
 }

MyCLabsClassToEnumRector

Refactor MyCLabs enum class to native Enum

-use MyCLabs\Enum\Enum;
-
-final class Action extends Enum
+enum Action : string
 {
-    private const VIEW = 'view';
-    private const EDIT = 'edit';
+    case VIEW = 'view';
+    case EDIT = 'edit';
 }

MyCLabsMethodCallToEnumConstRector

Refactor MyCLabs enum fetch to Enum const

-$name = SomeEnum::VALUE()->getKey();
+$name = SomeEnum::VALUE;

NewInInitializerRector

Replace property declaration of new state with direct new

 class SomeClass
 {
-    private Logger $logger;
-
     public function __construct(
-        ?Logger $logger = null,
+        private Logger $logger = new NullLogger,
     ) {
-        $this->logger = $logger ?? new NullLogger;
     }
 }

NullToStrictStringFuncCallArgRector

Change null to strict string defined function call args

 class SomeClass
 {
     public function run()
     {
-        preg_split("#a#", null);
+        preg_split("#a#", '');
     }
 }

Php81ResourceReturnToObjectRector

Change is_resource() to instanceof Object

 class SomeClass
 {
     public function run()
     {
         $f = finfo_open();
-        is_resource($f);
+        $f instanceof \finfo;
     }
 }

ReadOnlyPropertyRector

Decorate read-only property with readonly attribute

 class SomeClass
 {
     public function __construct(
-        private string $name
+        private readonly string $name
     ) {
     }

     public function getName()
     {
         return $this->name;
     }
 }

SpatieEnumClassToEnumRector

Refactor Spatie enum class to native Enum

-use \Spatie\Enum\Enum;
-
-/**
- * @method static self draft()
- * @method static self published()
- * @method static self archived()
- */
-class StatusEnum extends Enum
+enum StatusEnum : string
 {
+    case DRAFT = 'draft';
+    case PUBLISHED = 'published';
+    case ARCHIVED = 'archived';
 }

SpatieEnumMethodCallToEnumConstRector

Refactor Spatie enum method calls

-$value1 = SomeEnum::SOME_CONSTANT()->getValue();
-$value2 = SomeEnum::SOME_CONSTANT()->value;
-$name1 = SomeEnum::SOME_CONSTANT()->getName();
-$name2 = SomeEnum::SOME_CONSTANT()->name;
+$value1 = SomeEnum::SOME_CONSTANT->value;
+$value2 = SomeEnum::SOME_CONSTANT->value;
+$name1 = SomeEnum::SOME_CONSTANT->name;
+$name2 = SomeEnum::SOME_CONSTANT->name;

Php82

FilesystemIteratorSkipDotsRector

Prior PHP 8.2 FilesystemIterator::SKIP_DOTS was always set and could not be removed, therefore FilesystemIterator::SKIP_DOTS is added in order to keep this behaviour.

-new FilesystemIterator(__DIR__, FilesystemIterator::KEY_AS_FILENAME);
+new FilesystemIterator(__DIR__, FilesystemIterator::KEY_AS_FILENAME | FilesystemIterator::SKIP_DOTS);

ReadOnlyClassRector

Decorate read-only class with readonly attribute

-final class SomeClass
+final readonly class SomeClass
 {
     public function __construct(
-        private readonly string $name
+        private string $name
     ) {
     }
 }

Utf8DecodeEncodeToMbConvertEncodingRector

Change deprecated utf8_decode and utf8_encode to mb_convert_encoding

-utf8_decode($value);
-utf8_encode($value);
+mb_convert_encoding($value, 'ISO-8859-1');
+mb_convert_encoding($value, 'UTF-8', 'ISO-8859-1');

Privatization

ChangeGlobalVariablesToPropertiesRector

Change global $variables to private properties

 class SomeClass
 {
+    private $variable;
     public function go()
     {
-        global $variable;
-        $variable = 5;
+        $this->variable = 5;
     }

     public function run()
     {
-        global $variable;
-        var_dump($variable);
+        var_dump($this->variable);
     }
 }

ChangeReadOnlyPropertyWithDefaultValueToConstantRector

Change property with read only status with default value to constant

 class SomeClass
 {
     /**
      * @var string[]
      */
-    private $magicMethods = [
+    private const MAGIC_METHODS = [
         '__toString',
         '__wakeup',
     ];

     public function run()
     {
-        foreach ($this->magicMethods as $magicMethod) {
+        foreach (self::MAGIC_METHODS as $magicMethod) {
             echo $magicMethod;
         }
     }
 }

ChangeReadOnlyVariableWithDefaultValueToConstantRector

Change variable with read only status with default value to constant

 class SomeClass
 {
+    /**
+     * @var string[]
+     */
+    private const REPLACEMENTS = [
+        'PHPUnit\Framework\TestCase\Notice' => 'expectNotice',
+        'PHPUnit\Framework\TestCase\Deprecated' => 'expectDeprecation',
+    ];
+
     public function run()
     {
-        $replacements = [
-            'PHPUnit\Framework\TestCase\Notice' => 'expectNotice',
-            'PHPUnit\Framework\TestCase\Deprecated' => 'expectDeprecation',
-        ];
-
-        foreach ($replacements as $class => $method) {
+        foreach (self::REPLACEMENTS as $class => $method) {
         }
     }
 }

FinalizeClassesWithoutChildrenRector

Finalize every class that has no children

-class FirstClass
+final class FirstClass
 {
 }

 class SecondClass
 {
 }

-class ThirdClass extends SecondClass
+final class ThirdClass extends SecondClass
 {
 }

PrivatizeFinalClassMethodRector

Change protected class method to private if possible

 final class SomeClass
 {
-    protected function someMethod()
+    private function someMethod()
     {
     }
 }

PrivatizeFinalClassPropertyRector

Change property to private if possible

 final class SomeClass
 {
-    protected $value;
+    private $value;
 }

PrivatizeLocalGetterToPropertyRector

Privatize getter of local property to property

 class SomeClass
 {
     private $some;

     public function run()
     {
-        return $this->getSome() + 5;
+        return $this->some + 5;
     }

     private function getSome()
     {
         return $this->some;
     }
 }

ReplaceStringWithClassConstantRector

Replace string values in specific method call by constant of provided class

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Privatization\Rector\MethodCall\ReplaceStringWithClassConstantRector;
use Rector\Privatization\ValueObject\ReplaceStringWithClassConstant;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(ReplaceStringWithClassConstantRector::class, [
        new ReplaceStringWithClassConstant('SomeClass', 'call', 0, 'Placeholder', false),
    ]);
};

↓

 class SomeClass
 {
     public function run()
     {
-        $this->call('name');
+        $this->call(Placeholder::NAME);
     }
 }

Removing

ArgumentRemoverRector

Removes defined arguments in defined methods and their calls.

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Removing\Rector\ClassMethod\ArgumentRemoverRector;
use Rector\Removing\ValueObject\ArgumentRemover;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(ArgumentRemoverRector::class, [
        new ArgumentRemover('ExampleClass', 'someMethod', 0, [
            true,
        ]),
    ]);
};

↓

 $someObject = new SomeClass;
-$someObject->someMethod(true);
+$someObject->someMethod();

RemoveFuncCallArgRector

Remove argument by position by function name

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Removing\Rector\FuncCall\RemoveFuncCallArgRector;
use Rector\Removing\ValueObject\RemoveFuncCallArg;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(RemoveFuncCallArgRector::class, [
        new RemoveFuncCallArg('remove_last_arg', 1),
    ]);
};

↓

-remove_last_arg(1, 2);
+remove_last_arg(1);

RemoveInterfacesRector

Removes interfaces usage from class.

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Removing\Rector\Class_\RemoveInterfacesRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(RemoveInterfacesRector::class, [
        'SomeInterface',
    ]);
};

↓

-class SomeClass implements SomeInterface
+class SomeClass
 {
 }

RemoveParentRector

Removes extends class by name

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Removing\Rector\Class_\RemoveParentRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(RemoveParentRector::class, [
        'SomeParentClass',
    ]);
};

↓

-final class SomeClass extends SomeParentClass
+final class SomeClass
 {
 }

RemoveTraitUseRector

Remove specific traits from code

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Removing\Rector\Class_\RemoveTraitUseRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(RemoveTraitUseRector::class, [
        'TraitNameToRemove',
    ]);
};

↓

 class SomeClass
 {
-    use SomeTrait;
 }

RemovingStatic

LocallyCalledStaticMethodToNonStaticRector

Change static method and local-only calls to non-static

 class SomeClass
 {
     public function run()
     {
-        self::someStatic();
+        $this->someStatic();
     }

-    private static function someStatic()
+    private function someStatic()
     {
     }
 }

Renaming

PseudoNamespaceToNamespaceRector

Replaces defined Pseudo_Namespaces by Namespace\Ones.

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Renaming\Rector\FileWithoutNamespace\PseudoNamespaceToNamespaceRector;
use Rector\Renaming\ValueObject\PseudoNamespaceToNamespace;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(PseudoNamespaceToNamespaceRector::class, [
        new PseudoNamespaceToNamespace('Some_', [
            'Some_Class_To_Keep',
        ]),
    ]);
};

↓

-/** @var Some_Chicken $someService */
-$someService = new Some_Chicken;
+/** @var Some\Chicken $someService */
+$someService = new Some\Chicken;
 $someClassToKeep = new Some_Class_To_Keep;

RenameAnnotationRector

Turns defined annotations above properties and methods to their new values.

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Renaming\Rector\ClassMethod\RenameAnnotationRector;
use Rector\Renaming\ValueObject\RenameAnnotationByType;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(RenameAnnotationRector::class, [
        new RenameAnnotationByType('PHPUnit\Framework\TestCase', 'test', 'scenario'),
    ]);
};

↓

 use PHPUnit\Framework\TestCase;

 final class SomeTest extends TestCase
 {
     /**
-     * @test
+     * @scenario
      */
     public function someMethod()
     {
     }
 }

RenameClassConstFetchRector

Replaces defined class constants in their calls.

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Renaming\Rector\ClassConstFetch\RenameClassConstFetchRector;
use Rector\Renaming\ValueObject\RenameClassAndConstFetch;
use Rector\Renaming\ValueObject\RenameClassConstFetch;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(RenameClassConstFetchRector::class, [
        new RenameClassConstFetch('SomeClass', 'OLD_CONSTANT', 'NEW_CONSTANT'),
        new RenameClassAndConstFetch('SomeClass', 'OTHER_OLD_CONSTANT', 'DifferentClass', 'NEW_CONSTANT'),
    ]);
};

↓

-$value = SomeClass::OLD_CONSTANT;
-$value = SomeClass::OTHER_OLD_CONSTANT;
+$value = SomeClass::NEW_CONSTANT;
+$value = DifferentClass::NEW_CONSTANT;

RenameClassRector

Replaces defined classes by new ones.

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Renaming\Rector\Name\RenameClassRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(RenameClassRector::class, [
        'App\SomeOldClass' => 'App\SomeNewClass',
    ]);
};

↓

 namespace App;

-use SomeOldClass;
+use SomeNewClass;

-function someFunction(SomeOldClass $someOldClass): SomeOldClass
+function someFunction(SomeNewClass $someOldClass): SomeNewClass
 {
-    if ($someOldClass instanceof SomeOldClass) {
-        return new SomeOldClass;
+    if ($someOldClass instanceof SomeNewClass) {
+        return new SomeNewClass;
     }
 }

RenameConstantRector

Replace constant by new ones

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Renaming\Rector\ConstFetch\RenameConstantRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(RenameConstantRector::class, [
        'MYSQL_ASSOC' => 'MYSQLI_ASSOC',
        'OLD_CONSTANT' => 'NEW_CONSTANT',
    ]);
};

↓

 final class SomeClass
 {
     public function run()
     {
-        return MYSQL_ASSOC;
+        return MYSQLI_ASSOC;
     }
 }

RenameFunctionRector

Turns defined function call new one.

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Renaming\Rector\FuncCall\RenameFunctionRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(RenameFunctionRector::class, [
        'view' => 'Laravel\Templating\render',
    ]);
};

↓

-view("...", []);
+Laravel\Templating\render("...", []);

RenameMethodRector

Turns method names to new ones.

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Renaming\Rector\MethodCall\RenameMethodRector;
use Rector\Renaming\ValueObject\MethodCallRename;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(RenameMethodRector::class, [
        new MethodCallRename('SomeExampleClass', 'oldMethod', 'newMethod'),
    ]);
};

↓

 $someObject = new SomeExampleClass;
-$someObject->oldMethod();
+$someObject->newMethod();

RenameNamespaceRector

Replaces old namespace by new one.

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Renaming\Rector\Namespace_\RenameNamespaceRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(RenameNamespaceRector::class, [
        'SomeOldNamespace' => 'SomeNewNamespace',
    ]);
};

↓

-$someObject = new SomeOldNamespace\SomeClass;
+$someObject = new SomeNewNamespace\SomeClass;

RenamePropertyRector

Replaces defined old properties by new ones.

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Renaming\Rector\PropertyFetch\RenamePropertyRector;
use Rector\Renaming\ValueObject\RenameProperty;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(RenamePropertyRector::class, [
        new RenameProperty('SomeClass', 'someOldProperty', 'someNewProperty'),
    ]);
};

↓

-$someObject->someOldProperty;
+$someObject->someNewProperty;

RenameStaticMethodRector

Turns method names to new ones.

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Renaming\Rector\StaticCall\RenameStaticMethodRector;
use Rector\Renaming\ValueObject\RenameStaticMethod;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(RenameStaticMethodRector::class, [
        new RenameStaticMethod('SomeClass', 'oldMethod', 'AnotherExampleClass', 'newStaticMethod'),
    ]);
};

↓

-SomeClass::oldStaticMethod();
+AnotherExampleClass::newStaticMethod();

RenameStringRector

Change string value

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Renaming\Rector\String_\RenameStringRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(RenameStringRector::class, [
        'ROLE_PREVIOUS_ADMIN' => 'IS_IMPERSONATOR',
    ]);
};

↓

 class SomeClass
 {
     public function run()
     {
-        return 'ROLE_PREVIOUS_ADMIN';
+        return 'IS_IMPERSONATOR';
     }
 }

Restoration

MakeTypedPropertyNullableIfCheckedRector

Make typed property nullable if checked

 final class SomeClass
 {
-    private AnotherClass $anotherClass;
+    private ?AnotherClass $anotherClass = null;

     public function run()
     {
         if ($this->anotherClass === null) {
             $this->anotherClass = new AnotherClass;
         }
     }
 }

MissingClassConstantReferenceToStringRector

Convert missing class reference to string

 class SomeClass
 {
     public function run()
     {
-        return NonExistingClass::class;
+        return 'NonExistingClass';
     }
 }

RemoveFinalFromEntityRector

Remove final from Doctrine entities

 use Doctrine\ORM\Mapping as ORM;

 /**
  * @ORM\Entity
  */
-final class SomeClass
+class SomeClass
 {
 }

UpdateFileNameByClassNameFileSystemRector

Rename file to respect class name

-// app/SomeClass.php
+// app/AnotherClass.php
 class AnotherClass
 {
 }

Strict

BooleanInBooleanNotRuleFixerRector

Fixer for PHPStan reports by strict type rule - "PHPStan\Rules\BooleansInConditions\BooleanInBooleanNotRule"

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Strict\Rector\BooleanNot\BooleanInBooleanNotRuleFixerRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(BooleanInBooleanNotRuleFixerRector::class, [
        BooleanInBooleanNotRuleFixerRector::TREAT_AS_NON_EMPTY => true,
    ]);
};

↓

 class SomeClass
 {
     public function run(string|null $name)
     {
-        if (! $name) {
+        if ($name === null) {
             return 'no name';
         }

         return 'name';
     }
 }

BooleanInIfConditionRuleFixerRector

Fixer for PHPStan reports by strict type rule - "PHPStan\Rules\BooleansInConditions\BooleanInIfConditionRule"

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Strict\Rector\If_\BooleanInIfConditionRuleFixerRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(BooleanInIfConditionRuleFixerRector::class, [
        BooleanInIfConditionRuleFixerRector::TREAT_AS_NON_EMPTY => false,
    ]);
};

↓

 final class NegatedString
 {
     public function run(string $name)
     {
-        if ($name) {
+        if ($name !== '') {
             return 'name';
         }

         return 'no name';
     }
 }

BooleanInTernaryOperatorRuleFixerRector

Fixer for PHPStan reports by strict type rule - "PHPStan\Rules\BooleansInConditions\BooleanInTernaryOperatorRule"

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Strict\Rector\Ternary\BooleanInTernaryOperatorRuleFixerRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(BooleanInTernaryOperatorRuleFixerRector::class, [
        BooleanInTernaryOperatorRuleFixerRector::TREAT_AS_NON_EMPTY => false,
    ]);
};

↓

 final class ArrayCompare
 {
     public function run(array $data)
     {
-        return $data ? 1 : 2;
+        return $data !== [] ? 1 : 2;
     }
 }

DisallowedEmptyRuleFixerRector

Fixer for PHPStan reports by strict type rule - "PHPStan\Rules\DisallowedConstructs\DisallowedEmptyRule"

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Strict\Rector\Empty_\DisallowedEmptyRuleFixerRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(DisallowedEmptyRuleFixerRector::class, [
        DisallowedEmptyRuleFixerRector::TREAT_AS_NON_EMPTY => false,
    ]);
};

↓

 final class SomeEmptyArray
 {
     public function run(array $items)
     {
-        return empty($items);
+        return $items === [];
     }
 }

DisallowedShortTernaryRuleFixerRector

Fixer for PHPStan reports by strict type rule - "PHPStan\Rules\DisallowedConstructs\DisallowedShortTernaryRule"

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Strict\Rector\Ternary\DisallowedShortTernaryRuleFixerRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(DisallowedShortTernaryRuleFixerRector::class, [
        DisallowedShortTernaryRuleFixerRector::TREAT_AS_NON_EMPTY => false,
    ]);
};

↓

 final class ShortTernaryArray
 {
     public function run(array $array)
     {
-        return $array ?: 2;
+        return $array !== [] ? $array : 2;
     }
 }

Transform

AddAllowDynamicPropertiesAttributeRector

Add the AllowDynamicProperties attribute to all classes

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\Class_\AddAllowDynamicPropertiesAttributeRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(AddAllowDynamicPropertiesAttributeRector::class, [
        'Example\*',
    ]);
};

↓

 namespace Example\Domain;

+#[AllowDynamicProperties]
 class SomeObject {
     public string $someProperty = 'hello world';
 }

AddInterfaceByTraitRector

Add interface by used trait

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\Class_\AddInterfaceByTraitRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(AddInterfaceByTraitRector::class, [
        'SomeTrait' => 'SomeInterface',
    ]);
};

↓

-class SomeClass
+class SomeClass implements SomeInterface
 {
     use SomeTrait;
 }

ArgumentFuncCallToMethodCallRector

Move help facade-like function calls to constructor injection

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\FuncCall\ArgumentFuncCallToMethodCallRector;
use Rector\Transform\ValueObject\ArgumentFuncCallToMethodCall;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(ArgumentFuncCallToMethodCallRector::class, [
        new ArgumentFuncCallToMethodCall('view', 'Illuminate\Contracts\View\Factory', 'make'),
    ]);
};

↓

 class SomeController
 {
+    /**
+     * @var \Illuminate\Contracts\View\Factory
+     */
+    private $viewFactory;
+
+    public function __construct(\Illuminate\Contracts\View\Factory $viewFactory)
+    {
+        $this->viewFactory = $viewFactory;
+    }
+
     public function action()
     {
-        $template = view('template.blade');
-        $viewFactory = view();
+        $template = $this->viewFactory->make('template.blade');
+        $viewFactory = $this->viewFactory;
     }
 }

AttributeKeyToClassConstFetchRector

Replace key value on specific attribute to class constant

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\Attribute\AttributeKeyToClassConstFetchRector;
use Rector\Transform\ValueObject\AttributeKeyToClassConstFetch;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(AttributeKeyToClassConstFetchRector::class, [
        new AttributeKeyToClassConstFetch('Doctrine\ORM\Mapping\Column', 'type', 'Doctrine\DBAL\Types\Types', [
            'STRING',
        ]),
    ]);
};

↓

 use Doctrine\ORM\Mapping\Column;
+use Doctrine\DBAL\Types\Types;

 class SomeClass
 {
-    #[Column(type: "string")]
+    #[Column(type: Types::STRING)]
     public $name;
 }

ChangeSingletonToServiceRector

Change singleton class to normal class that can be registered as a service

 class SomeClass
 {
-    private static $instance;
-
-    private function __construct()
+    public function __construct()
     {
-    }
-
-    public static function getInstance()
-    {
-        if (null === static::$instance) {
-            static::$instance = new static();
-        }
-
-        return static::$instance;
     }
 }

DimFetchAssignToMethodCallRector

Change magic array access add to $list[], to explicit $list->addMethod(...)

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\Assign\DimFetchAssignToMethodCallRector;
use Rector\Transform\ValueObject\DimFetchAssignToMethodCall;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(DimFetchAssignToMethodCallRector::class, [
        new DimFetchAssignToMethodCall('Nette\Application\Routers\RouteList', 'Nette\Application\Routers\Route', 'addRoute'),
    ]);
};

↓

-use Nette\Application\Routers\Route;
 use Nette\Application\Routers\RouteList;

 class RouterFactory
 {
     public static function createRouter()
     {
         $routeList = new RouteList();
-        $routeList[] = new Route('...');
+        $routeList->addRoute('...');
     }
 }

FileGetContentsAndJsonDecodeToStaticCallRector

Merge 2 function calls to static call

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\FunctionLike\FileGetContentsAndJsonDecodeToStaticCallRector;
use Rector\Transform\ValueObject\StaticCallRecipe;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(FileGetContentsAndJsonDecodeToStaticCallRector::class, [
        new StaticCallRecipe('FileLoader', 'loadJson'),
    ]);
};

↓

 final class SomeClass
 {
     public function load($filePath)
     {
-        $fileGetContents = file_get_contents($filePath);
-        return json_decode($fileGetContents, true);
+        return FileLoader::loadJson($filePath);
     }
 }

FuncCallToConstFetchRector

Changes use of function calls to use constants

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\FuncCall\FuncCallToConstFetchRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(FuncCallToConstFetchRector::class, [
        'php_sapi_name' => 'PHP_SAPI',
    ]);
};

↓

 class SomeClass
 {
     public function run()
     {
-        $value = php_sapi_name();
+        $value = PHP_SAPI;
     }
 }

FuncCallToMethodCallRector

Turns defined function calls to local method calls.

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\FuncCall\FuncCallToMethodCallRector;
use Rector\Transform\ValueObject\FuncCallToMethodCall;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(FuncCallToMethodCallRector::class, [
        new FuncCallToMethodCall('view', 'Namespaced\SomeRenderer', 'render'),
    ]);
};

↓

 class SomeClass
 {
+    /**
+     * @var \Namespaced\SomeRenderer
+     */
+    private $someRenderer;
+
+    public function __construct(\Namespaced\SomeRenderer $someRenderer)
+    {
+        $this->someRenderer = $someRenderer;
+    }
+
     public function run()
     {
-        view('...');
+        $this->someRenderer->view('...');
     }
 }

FuncCallToNewRector

Change configured function calls to new Instance

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\FuncCall\FuncCallToNewRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(FuncCallToNewRector::class, [
        'collection' => [
            'Collection',
        ],
    ]);
};

↓

 class SomeClass
 {
     public function run()
     {
-        $array = collection([]);
+        $array = new \Collection([]);
     }
 }

FuncCallToStaticCallRector

Turns defined function call to static method call.

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\FuncCall\FuncCallToStaticCallRector;
use Rector\Transform\ValueObject\FuncCallToStaticCall;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(FuncCallToStaticCallRector::class, [
        new FuncCallToStaticCall('view', 'SomeStaticClass', 'render'),
    ]);
};

↓

-view("...", []);
+SomeClass::render("...", []);

GetAndSetToMethodCallRector

Turns defined __get/__set to specific method calls.

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\Assign\GetAndSetToMethodCallRector;
use Rector\Transform\ValueObject\GetAndSetToMethodCall;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(GetAndSetToMethodCallRector::class, [
        new GetAndSetToMethodCall('SomeContainer', 'addService', 'getService'),
    ]);
};

↓

 $container = new SomeContainer;
-$container->someService = $someService;
+$container->setService("someService", $someService);

MergeInterfacesRector

Merges old interface to a new one, that already has its methods

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\Class_\MergeInterfacesRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(MergeInterfacesRector::class, [
        'SomeOldInterface' => 'SomeInterface',
    ]);
};

↓

-class SomeClass implements SomeInterface, SomeOldInterface
+class SomeClass implements SomeInterface
 {
 }

MethodCallToAnotherMethodCallWithArgumentsRector

Turns old method call with specific types to new one with arguments

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\MethodCall\MethodCallToAnotherMethodCallWithArgumentsRector;
use Rector\Transform\ValueObject\MethodCallToAnotherMethodCallWithArguments;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(MethodCallToAnotherMethodCallWithArgumentsRector::class, [
        new MethodCallToAnotherMethodCallWithArguments('Nette\DI\ServiceDefinition', 'setInject', 'addTag', [
            'inject',
        ]),
    ]);
};

↓

 $serviceDefinition = new Nette\DI\ServiceDefinition;
-$serviceDefinition->setInject();
+$serviceDefinition->addTag('inject');

MethodCallToFuncCallRector

Change method call to function call

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\MethodCall\MethodCallToFuncCallRector;
use Rector\Transform\ValueObject\MethodCallToFuncCall;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(MethodCallToFuncCallRector::class, [
        new MethodCallToFuncCall('SomeClass', 'render', 'view'),
    ]);
};

↓

 final class SomeClass
 {
     public function show()
     {
-        return $this->render('some_template');
+        return view('some_template');
     }
 }

MethodCallToMethodCallRector

Change method one method from one service to a method call to in another service

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\MethodCall\MethodCallToMethodCallRector;
use Rector\Transform\ValueObject\MethodCallToMethodCall;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(MethodCallToMethodCallRector::class, [
        new MethodCallToMethodCall('FirstDependency', 'go', 'SecondDependency', 'away'),
    ]);
};

↓

 class SomeClass
 {
     public function __construct(
-        private FirstDependency $firstDependency
+        private SecondDependency $secondDependency
     ) {
     }

     public function run()
     {
-        $this->firstDependency->go();
+        $this->secondDependency->away();
     }
 }

MethodCallToPropertyFetchRector

Turns method call "$this->something()" to property fetch "$this->something"

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\MethodCall\MethodCallToPropertyFetchRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(MethodCallToPropertyFetchRector::class, [
        'someMethod' => 'someProperty',
    ]);
};

↓

 class SomeClass
 {
     public function run()
     {
-        $this->someMethod();
+        $this->someProperty;
     }
 }

MethodCallToStaticCallRector

Change method call to desired static call

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\MethodCall\MethodCallToStaticCallRector;
use Rector\Transform\ValueObject\MethodCallToStaticCall;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(MethodCallToStaticCallRector::class, [
        new MethodCallToStaticCall('AnotherDependency', 'process', 'StaticCaller', 'anotherMethod'),
    ]);
};

↓

 final class SomeClass
 {
     private $anotherDependency;

     public function __construct(AnotherDependency $anotherDependency)
     {
         $this->anotherDependency = $anotherDependency;
     }

     public function loadConfiguration()
     {
-        return $this->anotherDependency->process('value');
+        return StaticCaller::anotherMethod('value');
     }
 }

NewArgToMethodCallRector

Change new with specific argument to method call

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\New_\NewArgToMethodCallRector;
use Rector\Transform\ValueObject\NewArgToMethodCall;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(NewArgToMethodCallRector::class, [
        new NewArgToMethodCall('Dotenv', true, 'usePutenv'),
    ]);
};

↓

 class SomeClass
 {
     public function run()
     {
-        $dotenv = new Dotenv(true);
+        $dotenv = new Dotenv();
+        $dotenv->usePutenv();
     }
 }

NewToConstructorInjectionRector

Change defined new type to constructor injection

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\New_\NewToConstructorInjectionRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(NewToConstructorInjectionRector::class, [
        'Validator',
    ]);
};

↓

 class SomeClass
 {
+    /**
+     * @var Validator
+     */
+    private $validator;
+
+    public function __construct(Validator $validator)
+    {
+        $this->validator = $validator;
+    }
+
     public function run()
     {
-        $validator = new Validator();
-        $validator->validate(1000);
+        $this->validator->validate(1000);
     }
 }

NewToMethodCallRector

Replaces creating object instances with "new" keyword with factory method.

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\New_\NewToMethodCallRector;
use Rector\Transform\ValueObject\NewToMethodCall;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(NewToMethodCallRector::class, [
        new NewToMethodCall('MyClass', 'MyClassFactory', 'create'),
    ]);
};

↓

 class SomeClass
 {
+	/**
+	 * @var \MyClassFactory
+	 */
+	private $myClassFactory;
+
 	public function example() {
-		new MyClass($argument);
+		$this->myClassFactory->create($argument);
 	}
 }

NewToStaticCallRector

Change new Object to static call

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\New_\NewToStaticCallRector;
use Rector\Transform\ValueObject\NewToStaticCall;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(NewToStaticCallRector::class, [
        new NewToStaticCall('Cookie', 'Cookie', 'create'),
    ]);
};

↓

 class SomeClass
 {
     public function run()
     {
-        new Cookie($name);
+        Cookie::create($name);
     }
 }

ParentClassToTraitsRector

Replaces parent class to specific traits

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\Class_\ParentClassToTraitsRector;
use Rector\Transform\ValueObject\ParentClassToTraits;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(ParentClassToTraitsRector::class, [
        new ParentClassToTraits('Nette\Object', [
            'Nette\SmartObject',
        ]),
    ]);
};

↓

-class SomeClass extends Nette\Object
+class SomeClass
 {
+    use Nette\SmartObject;
 }

PropertyAssignToMethodCallRector

Turns property assign of specific type and property name to method call

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\Assign\PropertyAssignToMethodCallRector;
use Rector\Transform\ValueObject\PropertyAssignToMethodCall;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(PropertyAssignToMethodCallRector::class, [
        new PropertyAssignToMethodCall('SomeClass', 'oldProperty', 'newMethodCall'),
    ]);
};

↓

 $someObject = new SomeClass;
-$someObject->oldProperty = false;
+$someObject->newMethodCall(false);

PropertyFetchToMethodCallRector

Replaces properties assign calls be defined methods.

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\Assign\PropertyFetchToMethodCallRector;
use Rector\Transform\ValueObject\PropertyFetchToMethodCall;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(PropertyFetchToMethodCallRector::class, [
        new PropertyFetchToMethodCall('SomeObject', 'property', 'getProperty', 'setProperty', [
        ]),
        new PropertyFetchToMethodCall('SomeObject', 'bareProperty', 'getConfig', [
            'someArg',
        ]),
    ]);
};

↓

-$result = $object->property;
-$object->property = $value;
+$result = $object->getProperty();
+$object->setProperty($value);

-$bare = $object->bareProperty;
+$bare = $object->getConfig('someArg');

RemoveAllowDynamicPropertiesAttributeRector

Remove the AllowDynamicProperties attribute from all classes

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\Class_\RemoveAllowDynamicPropertiesAttributeRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(RemoveAllowDynamicPropertiesAttributeRector::class, [
        'Example\*',
    ]);
};

↓

 namespace Example\Domain;

-#[AllowDynamicProperties]
 class SomeObject {
     public string $someProperty = 'hello world';
 }

ReplaceParentCallByPropertyCallRector

Changes method calls in child of specific types to defined property method call

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\MethodCall\ReplaceParentCallByPropertyCallRector;
use Rector\Transform\ValueObject\ReplaceParentCallByPropertyCall;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(ReplaceParentCallByPropertyCallRector::class, [
        new ReplaceParentCallByPropertyCall('SomeTypeToReplace', 'someMethodCall', 'someProperty'),
    ]);
};

↓

 final class SomeClass
 {
     public function run(SomeTypeToReplace $someTypeToReplace)
     {
-        $someTypeToReplace->someMethodCall();
+        $this->someProperty->someMethodCall();
     }
 }

ReturnTypeWillChangeRector

Add #[\ReturnTypeWillChange] attribute to configured instanceof class with methods

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\ClassMethod\ReturnTypeWillChangeRector;
use Rector\Transform\ValueObject\ClassMethodReference;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(ReturnTypeWillChangeRector::class, [
        new ClassMethodReference('ArrayAccess', 'offsetGet'),
    ]);
};

↓

 class SomeClass implements ArrayAccess
 {
+    #[\ReturnTypeWillChange]
     public function offsetGet($offset)
     {
     }
 }

StaticCallToFuncCallRector

Turns static call to function call.

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\StaticCall\StaticCallToFuncCallRector;
use Rector\Transform\ValueObject\StaticCallToFuncCall;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(StaticCallToFuncCallRector::class, [
        new StaticCallToFuncCall('OldClass', 'oldMethod', 'new_function'),
    ]);
};

↓

-OldClass::oldMethod("args");
+new_function("args");

StaticCallToMethodCallRector

Change static call to service method via constructor injection

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\StaticCall\StaticCallToMethodCallRector;
use Rector\Transform\ValueObject\StaticCallToMethodCall;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(StaticCallToMethodCallRector::class, [
        new StaticCallToMethodCall('Nette\Utils\FileSystem', 'write', 'App\Custom\SmartFileSystem', 'dumpFile'),
    ]);
};

↓

-use Nette\Utils\FileSystem;
+use App\Custom\SmartFileSystem;

 class SomeClass
 {
+    /**
+     * @var SmartFileSystem
+     */
+    private $smartFileSystem;
+
+    public function __construct(SmartFileSystem $smartFileSystem)
+    {
+        $this->smartFileSystem = $smartFileSystem;
+    }
+
     public function run()
     {
-        return FileSystem::write('file', 'content');
+        return $this->smartFileSystem->dumpFile('file', 'content');
     }
 }

StaticCallToNewRector

Change static call to new instance

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\StaticCall\StaticCallToNewRector;
use Rector\Transform\ValueObject\StaticCallToNew;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(StaticCallToNewRector::class, [
        new StaticCallToNew('JsonResponse', 'create'),
    ]);
};

↓

 class SomeClass
 {
     public function run()
     {
-        $dotenv = JsonResponse::create(['foo' => 'bar'], Response::HTTP_OK);
+        $dotenv = new JsonResponse(['foo' => 'bar'], Response::HTTP_OK);
     }
 }

StringToClassConstantRector

Changes strings to specific constants

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\String_\StringToClassConstantRector;
use Rector\Transform\ValueObject\StringToClassConstant;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(StringToClassConstantRector::class, [
        new StringToClassConstant('compiler.post_dump', 'Yet\AnotherClass', 'CONSTANT'),
    ]);
};

↓

 final class SomeSubscriber
 {
     public static function getSubscribedEvents()
     {
-        return ['compiler.post_dump' => 'compile'];
+        return [\Yet\AnotherClass::CONSTANT => 'compile'];
     }
 }

ToStringToMethodCallRector

Turns defined code uses of "__toString()" method to specific method calls.

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\String_\ToStringToMethodCallRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(ToStringToMethodCallRector::class, [
        'SomeObject' => 'getPath',
    ]);
};

↓

 $someValue = new SomeObject;
-$result = (string) $someValue;
-$result = $someValue->__toString();
+$result = $someValue->getPath();
+$result = $someValue->getPath();

UnsetAndIssetToMethodCallRector

Turns defined __isset/__unset calls to specific method calls.

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\Isset_\UnsetAndIssetToMethodCallRector;
use Rector\Transform\ValueObject\UnsetAndIssetToMethodCall;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(UnsetAndIssetToMethodCallRector::class, [
        new UnsetAndIssetToMethodCall('SomeContainer', 'hasService', 'removeService'),
    ]);
};

↓

 $container = new SomeContainer;
-isset($container["someKey"]);
-unset($container["someKey"]);
+$container->hasService("someKey");
+$container->removeService("someKey");

WrapReturnRector

Wrap return value of specific method

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Transform\Rector\ClassMethod\WrapReturnRector;
use Rector\Transform\ValueObject\WrapReturn;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(WrapReturnRector::class, [
        new WrapReturn('SomeClass', 'getItem', true),
    ]);
};

↓

 final class SomeClass
 {
     public function getItem()
     {
-        return 1;
+        return [1];
     }
 }

TypeDeclaration

AddArrowFunctionReturnTypeRector

Add known return type to arrow function

-fn () => [];
+fn (): array => [];

AddClosureReturnTypeRector

Add known return type to functions

 class SomeClass
 {
     public function run($meetups)
     {
-        return array_filter($meetups, function (Meetup $meetup) {
+        return array_filter($meetups, function (Meetup $meetup): bool {
             return is_object($meetup);
         });
     }
 }

AddMethodCallBasedStrictParamTypeRector

Change private method param type to strict type, based on passed strict types

 final class SomeClass
 {
     public function run(int $value)
     {
         $this->resolve($value);
     }

-    private function resolve($value)
+    private function resolve(int $value)
     {
     }
 }

AddParamTypeBasedOnPHPUnitDataProviderRector

Adds param type declaration based on PHPUnit provider return type declaration

 use PHPUnit\Framework\TestCase

 final class SomeTest extends TestCase
 {
     /**
      * @dataProvider provideData()
      */
-    public function test($value)
+    public function test(string $value)
     {
     }

     public static function provideData()
     {
         yield ['name'];
     }
 }

AddParamTypeDeclarationRector

Add param types where needed

🔧 configure it!

<?php

declare(strict_types=1);

use PHPStan\Type\StringType;
use Rector\Config\RectorConfig;
use Rector\TypeDeclaration\Rector\ClassMethod\AddParamTypeDeclarationRector;
use Rector\TypeDeclaration\ValueObject\AddParamTypeDeclaration;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(AddParamTypeDeclarationRector::class, [
        new AddParamTypeDeclaration('SomeClass', 'process', 0, new StringType()),
    ]);
};

↓

 class SomeClass
 {
-    public function process($name)
+    public function process(string $name)
     {
     }
 }

AddParamTypeFromPropertyTypeRector

Adds param type declaration based on property type the value is assigned to PHPUnit provider return type declaration

 final class SomeClass
 {
     private string $name;

-    public function setName($name)
+    public function setName(string $name)
     {
         $this->name = $name;
     }
 }

AddParamTypeSplFixedArrayRector

Add exact fixed array type in known cases

+use PhpCsFixer\Tokenizer\Token;
 use PhpCsFixer\Tokenizer\Tokens;

 class SomeClass
 {
+    /**
+     * @param Tokens<Token>
+     */
     public function run(Tokens $tokens)
     {
     }
 }

AddPropertyTypeDeclarationRector

Add type to property by added rules, mostly public/property by parent type

🔧 configure it!

<?php

declare(strict_types=1);

use PHPStan\Type\StringType;
use Rector\Config\RectorConfig;
use Rector\TypeDeclaration\Rector\Property\AddPropertyTypeDeclarationRector;
use Rector\TypeDeclaration\ValueObject\AddPropertyTypeDeclaration;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(AddPropertyTypeDeclarationRector::class, [
        new AddPropertyTypeDeclaration('ParentClass', 'name', new StringType()),
    ]);
};

↓

 class SomeClass extends ParentClass
 {
-    public $name;
+    public string $name;
 }

AddReturnTypeDeclarationBasedOnParentClassMethodRector

Add missing return type declaration based on parent class method

 class A
 {
     public function execute(): int
     {
     }
 }

 class B extends A{
-    public function execute()
+    public function execute(): int
     {
     }
 }

AddReturnTypeDeclarationFromYieldsRector

Add return type declarations from yields

 class SomeClass
 {
-    public function provide()
+    /**
+     * @return Iterator<int>
+     */
+    public function provide(): Iterator
     {
         yield 1;
     }
 }

AddReturnTypeDeclarationRector

Changes defined return typehint of method and class.

🔧 configure it!

<?php

declare(strict_types=1);

use PHPStan\Type\ArrayType;
use PHPStan\Type\MixedType;
use Rector\Config\RectorConfig;
use Rector\TypeDeclaration\Rector\ClassMethod\AddReturnTypeDeclarationRector;
use Rector\TypeDeclaration\ValueObject\AddReturnTypeDeclaration;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(AddReturnTypeDeclarationRector::class, [
        new AddReturnTypeDeclaration('SomeClass', 'getData', new ArrayType(new MixedType(), new MixedType())),
    ]);
};

↓

 class SomeClass
 {
-    public function getData()
+    public function getData(): array
     {
     }
 }

AddVoidReturnTypeWhereNoReturnRector

Add return type void to function like without any return

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\TypeDeclaration\Rector\ClassMethod\AddVoidReturnTypeWhereNoReturnRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(AddVoidReturnTypeWhereNoReturnRector::class, [
        AddVoidReturnTypeWhereNoReturnRector::USE_PHPDOC => false,
    ]);
};

↓

 final class SomeClass
 {
-    public function getValues()
+    public function getValues(): void
     {
         $value = 1000;
         return;
     }
 }

ArrayShapeFromConstantArrayReturnRector

Add array shape exact types based on constant keys of array

 final class SomeClass
 {
+    /**
+     * @return array{name: string}
+     */
     public function run(string $name)
     {
         return ['name' => $name];
     }
 }

EmptyOnNullableObjectToInstanceOfRector

Change empty() on nullable object to instanceof check

 class SomeClass
 {
     public function run(?AnotherObject $anotherObject)
     {
-        if (empty($anotherObject)) {
+        if (! $anotherObject instanceof AnotherObject) {
             return false;
         }

         return true;
     }
 }

FalseReturnClassMethodToNullableRector

Change class method that returns false as invalid state, to nullable

 class SomeClass
 {
-    /**
-     * @return false|int
-     */
-    public function run(int $number)
+    public function run(int $number): ?int
     {
         if ($number === 10) {
-            return false;
+            return null;
         }

         return $number;
     }
 }

ParamAnnotationIncorrectNullableRector

Add or remove null type from @param phpdoc typehint based on php parameter type declaration

 final class SomeClass
 {
     /**
-     * @param \DateTime[] $dateTimes
+     * @param \DateTime[]|null $dateTimes
      */
     public function setDateTimes(?array $dateTimes): self
     {
         $this->dateTimes = $dateTimes;

         return $this;
     }
 }

ParamTypeByMethodCallTypeRector

Change param type based on passed method call type

 class SomeTypedService
 {
     public function run(string $name)
     {
     }
 }

 final class UseDependency
 {
     public function __construct(
         private SomeTypedService $someTypedService
     ) {
     }

-    public function go($value)
+    public function go(string $value)
     {
         $this->someTypedService->run($value);
     }
 }

ParamTypeByParentCallTypeRector

Change param type based on parent param type

 class SomeControl
 {
     public function __construct(string $name)
     {
     }
 }

 class VideoControl extends SomeControl
 {
-    public function __construct($name)
+    public function __construct(string $name)
     {
         parent::__construct($name);
     }
 }

ParamTypeFromStrictTypedPropertyRector

Add param type from $param set to typed property

 final class SomeClass
 {
     private int $age;

-    public function setAge($age)
+    public function setAge(int $age)
     {
         $this->age = $age;
     }
 }

PropertyTypeFromStrictSetterGetterRector

Add property type based on strict setter and getter method

 final class SomeClass
 {
-    private $name = 'John';
+    private string $name = 'John';

     public function setName(string $name): void
     {
         $this->name = $name;
     }

     public function getName(): string
     {
         return $this->name;
     }
 }

ReturnAnnotationIncorrectNullableRector

Add or remove null type from @return phpdoc typehint based on php return type declaration

 final class SomeClass
 {
     /**
-     * @return \DateTime[]
+     * @return \DateTime[]|null
      */
     public function getDateTimes(): ?array
     {
         return $this->dateTimes;
     }
 }

ReturnNeverTypeRector

Add "never" return-type for methods that never return anything

 final class SomeClass
 {
+    /**
+     * @return never
+     */
     public function run()
     {
         throw new InvalidException();
     }
 }

ReturnTypeFromReturnDirectArrayRector

Add return type from return direct array

 final class AddReturnArray
 {
-    public function getArray()
+    public function getArray(): array
     {
         return [1, 2, 3];
     }
 }

ReturnTypeFromReturnNewRector

Add return type to function like with return new

 final class SomeClass
 {
-    public function action()
+    public function action(): Response
     {
         return new Response();
     }
 }

ReturnTypeFromStrictBoolReturnExprRector

Add strict return type based on returned strict expr type

 final class SomeClass
 {
-    public function run()
+    public function run(): bool
     {
         return $this->first() && $this->somethingElse();
     }
 }

ReturnTypeFromStrictConstantReturnRector

Add strict type declaration based on returned constants

 class SomeClass
 {
     public const NAME = 'name';

-    public function run()
+    public function run(): string
     {
         return self::NAME;
     }
 }

ReturnTypeFromStrictNativeCallRector

Add strict return type based native function or class method return

 final class SomeClass
 {
-    public function run()
+    public function run(): int
     {
         return strlen('value');
     }
 }

ReturnTypeFromStrictNewArrayRector

Add strict return array type based on created empty array and returned

 final class SomeClass
 {
-    public function run()
+    public function run(): array
     {
         $values = [];

         return $values;
     }
 }

ReturnTypeFromStrictTernaryRector

Add method return type based on strict ternary values

 final class SomeClass
 {
-    public function getValue($number)
+    public function getValue($number): int
     {
         return $number ? 100 : 500;
     }
 }

ReturnTypeFromStrictTypedCallRector

Add return type from strict return type of call

 final class SomeClass
 {
-    public function getData()
+    public function getData(): int
     {
         return $this->getNumber();
     }

     private function getNumber(): int
     {
         return 1000;
     }
 }

ReturnTypeFromStrictTypedPropertyRector

Add return method return type based on strict typed property

 final class SomeClass
 {
     private int $age = 100;

-    public function getAge()
+    public function getAge(): int
     {
         return $this->age;
     }
 }

TypedPropertyFromAssignsRector

Add typed property from assigned types

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\TypeDeclaration\Rector\Property\TypedPropertyFromAssignsRector;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(TypedPropertyFromAssignsRector::class, [
        TypedPropertyFromAssignsRector::INLINE_PUBLIC => false,
    ]);
};

↓

 final class SomeClass
 {
-    private $name;
+    private string|null $name = null;

     public function run()
     {
         $this->name = 'string';
     }
 }

TypedPropertyFromStrictConstructorRector

Add typed properties based only on strict constructor types

 class SomeObject
 {
-    private $name;
+    private string $name;

     public function __construct(string $name)
     {
         $this->name = $name;
     }
 }

TypedPropertyFromStrictGetterMethodReturnTypeRector

Complete property type based on getter strict types

 final class SomeClass
 {
-    public $name;
+    public ?string $name = null;

     public function getName(): string|null
     {
         return $this->name;
     }
 }

TypedPropertyFromStrictSetUpRector

Add strict typed property based on setUp() strict typed assigns in TestCase

 use PHPUnit\Framework\TestCase;

 final class SomeClass extends TestCase
 {
-    private $value;
+    private int $value;

     public function setUp()
     {
         $this->value = 1000;
     }
 }

VarAnnotationIncorrectNullableRector

Add or remove null type from @var phpdoc typehint based on php property type declaration

 final class SomeClass
 {
     /**
-     * @var DateTime[]
+     * @var DateTime[]|null
      */
     private ?array $dateTimes;
 }

Visibility

ChangeConstantVisibilityRector

Change visibility of constant from parent class.

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Visibility\Rector\ClassConst\ChangeConstantVisibilityRector;
use Rector\Visibility\ValueObject\ChangeConstantVisibility;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(ChangeConstantVisibilityRector::class, [
        new ChangeConstantVisibility('ParentObject', 'SOME_CONSTANT', 2),
    ]);
};

↓

 class FrameworkClass
 {
     protected const SOME_CONSTANT = 1;
 }

 class MyClass extends FrameworkClass
 {
-    public const SOME_CONSTANT = 1;
+    protected const SOME_CONSTANT = 1;
 }

ChangeMethodVisibilityRector

Change visibility of method from parent class.

🔧 configure it!

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Visibility\Rector\ClassMethod\ChangeMethodVisibilityRector;
use Rector\Visibility\ValueObject\ChangeMethodVisibility;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(ChangeMethodVisibilityRector::class, [
        new ChangeMethodVisibility('FrameworkClass', 'someMethod', 2),
    ]);
};

↓

 class FrameworkClass
 {
     protected function someMethod()
     {
     }
 }

 class MyClass extends FrameworkClass
 {
-    public function someMethod()
+    protected function someMethod()
     {
     }
 }

ExplicitPublicClassMethodRector

Add explicit public method visibility.

 class SomeClass
 {
-    function foo()
+    public function foo()
     {
     }
 }