original_string: public static function concat()
      {
          $args = func_get_arg();
          $string = '';
  
          foreach ($args as $arg) {
              $string .= $arg;
          }
  
          return $string;
      }
code: public static function concat()
      {
          $args = func_get_arg();
          $string = '';
  
          foreach ($args as $arg) {
              $string .= $arg;
          }
  
          return $string;
      }
code_tokens: public static function concat ( ) { $ args = func_get_arg ( ) ; $ string = '' ; foreach ( $ args as $ arg ) { $ string .= $ arg ; } return $ string ; }
docstring: Concat strings as many as args.
  
  @param param[]
  
  @return string
docstring_tokens: Concat strings as many as args .