用new static,问题解决 /** * 静态方法,单例统一访问入口 */ static public function getInstance() { $name = get_called_class(); if (isset($name::$_instance) && !is_null($name::$_instance)) { $_instance=$name::$_instance; }else{ $_instance=$name::$_instance = new static(); } return $_instance; }
用new static,问题解决