Warning: Use of undefined constant DB_HOST - assumed 'DB_HOST' (this will throw an Error in a future version of PHP) in /www/wwwroot/daohang/includes/db.class.php on line 8

Warning: Use of undefined constant DB_NAME - assumed 'DB_NAME' (this will throw an Error in a future version of PHP) in /www/wwwroot/daohang/includes/db.class.php on line 8

Warning: Use of undefined constant DB_USER - assumed 'DB_USER' (this will throw an Error in a future version of PHP) in /www/wwwroot/daohang/includes/db.class.php on line 14

Warning: Use of undefined constant DB_PASS - assumed 'DB_PASS' (this will throw an Error in a future version of PHP) in /www/wwwroot/daohang/includes/db.class.php on line 14
数据库连接失败: SQLSTATE[HY000] [2002] php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution