original_string: public function disconnect() {
      if ($this->connected) {
        if (is_a($this->link, 'mysqli')) {
          unset($this->link);
        }
        $this->link = null;
        $this->connected = false;
      }
      return $this->connected;
    }
code: public function disconnect() {
      if ($this->connected) {
        if (is_a($this->link, 'mysqli')) {
          unset($this->link);
        }
        $this->link = null;
        $this->connected = false;
      }
      return $this->connected;
    }
code_tokens: public function disconnect ( ) { if ( $ this -> connected ) { if ( is_a ( $ this -> link , 'mysqli' ) ) { unset ( $ this -> link ) ; } $ this -> link = null ; $ this -> connected = false ; } return $ this -> connected ; }
docstring: Disconnect from the MySQL database.
  
  @return bool Whether this instance is connected to a MySQL database after
  the method has run.
docstring_tokens: Disconnect from the MySQL database .