Merge branch 'indexOf'

src/StaticStringy.php

@@ -421,6 +421,34 @@ class StaticStringy
             ->containsAll($needles, $caseSensitive);
     }
 
+    /**
+     * Returns the offset/index of the first occurance of $substr in the string.
+     * In case $substr is not a substring of the string, returns false.
+     *
+     * @param string $str         The haystack to search through
+     * @param string $substr substring
+     * @param int $offset
+     * @return int|bool
+     */
+    public static function indexOf($str, $substr, $offset = 0, $encoding = null)
+    {
+        return Stringy::create($str, $encoding)->indexOf($substr, $offset);
+    }
+
+    /**
+     * Returns the offset/index of the last occurance of $substr in the string.
+     * In case $substr is not a substring of the string, returns false.
+     *
+     * @param string $str         The haystack to search through
+     * @param string $substr substring
+     * @param int $offset
+     * @return int|bool
+     */
+    public static function indexOfLast($str, $substr, $offset = 0, $encoding = null)
+    {
+        return Stringy::create($str, $encoding)->indexOfLast($substr, $offset);
+    }
+
     /**
      * Surrounds a string with the given substring.
      *

src/Stringy.php

@@ -894,6 +894,32 @@ class Stringy implements \Countable, \IteratorAggregate, \ArrayAccess
         return true;
     }
 
+    /**
+     * Returns the offset/index of the first occurrence of $substr in the string.
+     * In case $substr is not a substring of the string, returns false.
+     *
+     * @param string $substr substring
+     * @param int $offset
+     * @return int|bool
+     */
+    public function indexOf($substr, $offset = 0)
+    {
+        return mb_strpos($this->str, (string)$substr, (int)$offset, $this->encoding);
+    }
+
+    /**
+     * Returns the offset/index of the last occurrence of $substr in the string.
+     * In case $substr is not a substring of the string, returns false.
+     *
+     * @param string $substr substring
+     * @param int $offset
+     * @return int|bool
+     */
+    public function indexOfLast($substr, $offset = 0)
+    {
+        return mb_strrpos($this->str, (string)$substr, (int)$offset, $this->encoding);
+    }
+
     /**
      * Surrounds $str with the given substring.
      *