code: public function match($subject, &$match)
      {
          if (count($this->patterns) === 0) {
              return false;
          }
          if (! preg_match($this->getCompoundedRegex(), $subject, $matches)) {
              $match = '';
  
              return false;
          }
          $match = $matches[0];
          for ($i = 1; $i < count($matches); $i++) {
              if ($matches[$i]) {
                  return $this->labels[$i - 1];
              }
          }
  
          return true;
      }
docs: Attempts to match all patterns at once against a string.
  
  @param string $subject      String to match against.
  @param string $match        First matched portion of subject.
  
  @return bool             True on success.