What is the specific purpose or context of the test2 you're referring to?

本文共计55个文字，预计阅读时间需要1分钟。

phpclass DBmysql { private $host='localhost'; private $name='root'; private $pwd='root'; private $dbdname='db_like';}

function _construct($host='', $name='', $pwd='') {}

assign($count); $this -> display(); } class DBmysql{ private $host = 'localhost'; private $name = 'root'; private $pwd = 'root'; private $dbdname = 'db_like'; } function _construct($host = '', $name = '', $pwd = ''){ }