Warning: mysqli_connect(): (HY000/1045): Access denied for user 'root'@'localhost' (using password: YES) in /www/wwwroot/qsong/function/conn.php on line 5

Warning: mysqli_query() expects parameter 1 to be mysqli, bool given in /www/wwwroot/qsong/function/conn.php on line 6
数据库连接失败: Access denied for user 'root'@'localhost' (using password: YES)