voku / portable-utf8

    }

    // iconv and mbstring do not support integer $needle

    if ((int)$needle === $needle && $needle >= 0) {

      $needle = (string)self::chr((int)$needle);

    }

    if ($cleanUtf8 === true) {

      // "\mb_strpos" and "\iconv_strpos" returns wrong position,

   */

  public static function strripos(string $haystack, string $needle, int $offset = 0, string $encoding = 'UTF-8', bool $cleanUtf8 = false)

  {

    if ((int)$needle === $needle && $needle >= 0) {

      $needle = (string)self::chr((int)$needle);

    }

    if (!isset($haystack[0], $needle[0])) {

      return false;