original_string: public function addAlias($key, $new_key)
      {
          $obj = new stdClass;
          $obj->key = $new_key;
          $obj->isAlias = true;
          $this->info[$key] = $obj;
      }
code: public function addAlias($key, $new_key)
      {
          $obj = new stdClass;
          $obj->key = $new_key;
          $obj->isAlias = true;
          $this->info[$key] = $obj;
      }
code_tokens: public function addAlias ( $ key , $ new_key ) { $ obj = new stdClass ; $ obj -> key = $ new_key ; $ obj -> isAlias = true ; $ this -> info [ $ key ] = $ obj ; }
docstring: Defines a directive alias for backwards compatibility
  @param string $key Directive that will be aliased
  @param string $new_key Directive that the alias will be to
docstring_tokens: Defines a directive alias for backwards compatibility