PHPStan: Fix level 2 errors

adminer/include/adminer.inc.php

@@ -5,7 +5,7 @@ namespace Adminer;
 
 class Adminer {
 	public $operators; ///< @var list<string> operators used in select, null for all operators
-	public $error = ''; ///< @var protected(set) string HTML
+	public $error = ''; ///< @var string @visibility protected(set) string HTML
 
 	/** Name in title and navigation
 	* @return string HTML code
@@ -22,7 +22,7 @@ class Adminer {
 	}
 
 	/** Get SSL connection options
-	* @return ?string[]
+	* @return string[]|void
 	*/
 	function connectSsl() {
 	}
@@ -221,7 +221,6 @@ class Adminer {
 	* @param string
 	* @param string
 	* @return BackwardKey[]
-	* @phpstan-type BackwardKey array{name:string, keys:string[][]}
 	*/
 	function backwardKeys($table, $tableName) {
 		return array();
@@ -289,7 +288,7 @@ class Adminer {
 	/** Get a link to use in select table
 	* @param string raw value of the field
 	* @param Field single field returned from fields()
-	* @return ?string null to create the default link
+	* @return string|void null to create the default link
 	*/
 	function selectLink($val, $field) {
 	}

adminer/include/driver.inc.php

@@ -61,14 +61,14 @@ abstract class SqlDriver {
 
 	/** Get enum values
 	* @param Field
-	* @return ?string
+	* @return string|void
 	*/
 	function enumLength($field) {
 	}
 
 	/** Function used to convert the value inputted by user
 	* @param Field
-	* @return ?string
+	* @return string|void
 	*/
 	function unconvertFunction($field) {
 	}
@@ -187,7 +187,7 @@ abstract class SqlDriver {
 	/** Return query with a timeout
 	* @param string
 	* @param int seconds
-	* @return ?string null if the driver doesn't support query timeouts
+	* @return string|void null if the driver doesn't support query timeouts
 	*/
 	function slowQuery($query, $timeout) {
 	}
@@ -231,7 +231,7 @@ abstract class SqlDriver {
 	}
 
 	/** Get warnings about the last command
-	* @return ?string HTML
+	* @return string|void HTML
 	*/
 	function warnings() {
 	}
@@ -239,7 +239,7 @@ abstract class SqlDriver {
 	/** Get help link for table
 	* @param string
 	* @param bool
-	* @return ?string relative URL
+	* @return string|void relative URL
 	*/
 	function tableHelp($name, $is_view = false) {
 	}

adminer/include/editing.inc.php

@@ -299,7 +299,7 @@ function default_value($field) {
 
 /** Get type class to use in CSS
 * @param string
-* @return ?string class=''
+* @return string|void class=''
 */
 function type_class($type) {
 	foreach (

adminer/include/functions.inc.php

@@ -274,7 +274,7 @@ function get_rows($query, $connection2 = null, $error = "<p class='error'>") {
 /** Find unique identifier of a row
 * @param string[]
 * @param Index[] result of indexes()
-* @return ?string[] null if there is no unique identifier
+* @return string[]|void null if there is no unique identifier
 */
 function unique_array($row, $indexes) {
 	foreach ($indexes as $index) {

adminer/include/html.inc.php

@@ -343,7 +343,7 @@ function input($field, $value, $function, $autofocus = false) {
 }
 
 /** Process edit input field
-* @param one field from fields()
+* @param Field one field from fields()
 * @return string or false to leave the original value
 */
 function process_input($field) {
@@ -417,7 +417,7 @@ function search_tables() {
 
 /** Return events to display help on mouse over
 * @param string JS expression
-* @param bool JS expression
+* @param int JS expression
 * @return string
 */
 function on_help($command, $side = 0) {

adminer/include/plugins.inc.php

@@ -2,7 +2,7 @@
 namespace Adminer;
 
 class Plugins extends Adminer {
-	public $plugins; ///< @var protected(set) array
+	public $plugins; ///< @var list<object> @visibility protected(set)
 
 	/** Register plugins
 	* @param list<object> object instances or null to autoload plugins from adminer-plugins/

adminer/include/tmpfile.inc.php

@@ -2,7 +2,8 @@
 namespace Adminer;
 
 class TmpFile {
-	private $handler, $size;
+	private $handler;
+	public $size; ///< @visibility protected(set)
 
 	function __construct() {
 		$this->handler = tmpfile();