public static function strpos($haystack, $needle, $offset = 0)
    {
        return mb_strpos($haystack, $needle, $offset, self::ENCODING);
    }
public static function strpos($haystack, $needle, $offset = 0)
    {
        return mb_strpos($haystack, $needle, $offset, self::ENCODING);
    }
public static function strpos ( $ haystack , $ needle , $ offset = 0 ) { return mb_strpos ( $ haystack , $ needle , $ offset , self :: ENCODING ) ; }
Find position of first occurrence of string in a string.

@param string $haystack
@param string $needle
@param int    $offset

@return bool|int
Find position of first occurrence of string in a string .