public static function indexOf($string, $substring, $offset = null)
	{
		//get the position of this string in the main string
		$position = strpos($string, $substring, $offset);

		//return -1 of the substring was not found
		if( ! is_int($position) )
		{
			//return string position  as -1
			return -1;

		}

		//return actual string position if found
		return $position;
	}
public static function indexOf($string, $substring, $offset = null)
	{
		//get the position of this string in the main string
		$position = strpos($string, $substring, $offset);

		//return -1 of the substring was not found
		if( ! is_int($position) )
		{
			//return string position  as -1
			return -1;

		}

		//return actual string position if found
		return $position;
	}
public static function indexOf ( $ string , $ substring , $ offset = null ) { //get the position of this string in the main string $ position = strpos ( $ string , $ substring , $ offset ) ; //return -1 of the substring was not found if ( ! is_int ( $ position ) ) { //return string position  as -1 return - 1 ; } //return actual string position if found return $ position ; }
This method determines substrings within larger strings

@param string $string The main sting against which to check for substring
@param string $substring The substring to check for
@param int $offset The offset value to start from
@return int The position of the substring in the main string
This method determines substrings within larger strings