PHP Notice: Undefined variable: w0rD in D:\wwwroot\yootm\wwwroot\connection\config.php on line 4 PHP Warning: PDO::__construct(): in D:\wwwroot\yootm\wwwroot\connection\pdo_db.php on line 9 PHP Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[HY000] [2002] php_network_getaddresses: getaddrinfo failed: 在数据库查找中出现一个不可恢复的错误。 ' in D:\wwwroot\yootm\wwwroot\connection\pdo_db.php:9 Stack trace: #0 D:\wwwroot\yootm\wwwroot\connection\pdo_db.php(9): PDO->__construct('mysql:host=@@MY...', 'root', 'g00dPa$') #1 D:\wwwroot\yootm\wwwroot\www\site_page\info.php(1): require_once('D:\\wwwroot\\yoot...') #2 {main} thrown in D:\wwwroot\yootm\wwwroot\connection\pdo_db.php on line 9