php – 警告：mysqli_connect():( HY000 / 1045)：用户’用户名’@’localhost’拒绝访问(使用密码：YES)

[weixin_38050323]

Warning: mysqli_connect(): (HY000/1045): Access denied for user ‘username’@’localhost’ (using password: YES) in C:\Users\xampp\htdocs\PHP_Login_Script\config.php on line 6 Warning: mysqli_real_escape_string() expects parameter 1 to be mysqli, boolean given in C:\Users\xampp\htdocs\PHP_Login_Script\login.php on line 10 Warning: mysqli_real_escape_string() expects parameter 1 to be mysqli, boolean given in C:\Users\xampp\htdocs\PHP_Login_Script\login.php on line 11 Warning: mysqli_query() expects parameter 1 to be mysqli, boolean given in C:\Users\xampp\htdocs\PHP_Login_Script\login.php on line 15 Warning: mysqli_fetch_array() expects parameter 1 to be mysqli_result, null given in C:\Users\xampp\htdocs\PHP_Login_Script\login.php on line 16 Warning: mysqli_num_rows() expects parameter 1 to be mysqli_result, null given in C:\Users\xampp\htdocs\PHP_Login_Script\login.php on line 19 我在localhost上遇到这个错误,即使我的配置文件是这样的： <?php define("DB_HOST", "localhost"); define("DB_USER", "root"); define("DB_PASSWORD", ""); define("DB_DATABASE", "databasename"); $db = mysqli_connect(DB_SERVER, DB_USERNAME, DB_PASSWORD, DB_DATABASE); ?> 这曾经有用,但现在已不复存在了.这段代码有问题还是现在不能正常工作？ This是我正在进行的教程.

[weixin_38060006]

用户名,主机和密码的组合不允许连接到服务器.验证服务器上的权限表(如果需要,重新加载授权)以及您正在连接到正确的服务器.