mysql - 用户 'username' @'localhost' 的访问被拒绝(在第 9 行使用密码 : YES) in C:\webdev\wamp\www\membershipSite\classes\Mysql. php

Question

我对这一切都不熟悉，但我知道相当多的 HTML/CSS。我想创建一个登录服务器，我从视频中获得了大部分代码。如果有人可以帮助我并彻底解释以便我理解，将不胜感激。如果需要任何其他东西，我会很乐意发布。

<?php

require_once 'includes/constants.php';

class Mysql {
private $conn;

function _construct() {
    $this->conn = new mysqli(DB_SERVER, DB_USER, DB_PASSWORD, DB_NAME) or die('There was a problem connecting to the database.');
}

function verify_Username_and_Pass($un, $pwd) {

    $query = "SELECT *
            FROM users
            WHERE username = ? AND password = ?
            LIMIT 1";

    if($stmt = $this->conn->prepare($query)) {
        $stmt->bind_param('ss', $un, $pwd);
        $stmt->execute();

        if($stmt->fetch()) {
            $stmt->close();
            return true;
        }
    }

}
}

Answer 1

需要给mysql中的user@host权限。授予命令看起来像

grant all privileges on YOURDB.* to
'YOURUSER'@'localhost' identified by 'YOURPASSWORD';