## 变量赋值时候，等号要对齐，看起来工整 错误示范 ~~~ /** * 关闭数据库（或者重新连接） * @access public * @return $this */ public function close() { $this->linkID = null; $this->linkWrite= null; $this->linkRead = null; $this->links = []; return $this; } ~~~ 正确示范 ~~~ /** * 关闭数据库（或者重新连接） * @access public * @return $this */ public function close() { $this->linkID = null; $this->linkWrite = null; $this->linkRead = null; $this->links = []; return $this; } ~~~ 对比一目了然