我在wamp服务器上创建了一个名为“ credentials”的数据库，其中包含“ userinfo”表。 我无法通过php连接数据库

Question

Error: Warning: mysqli::mysqli(): (HY000/1045): Access denied for user 'username'@'localhost' (using password: YES) in C:\\wamp\\www\\form\\update.php on line 8

PHP code:

<?php

$servername = 'localhost';
$username = 'username';
$password = 'password';
$dbName = 'credentials';

$link = new mysqli($servername, $username, $password, $dbName);
if (!$link) {

    die("Connection Failed: " . mysqli_connect_error());
}

$connect = "INSERT INTO userinfo (username, password) VALUES ('$username', '$password')";
if (mysqli_query($link, $connect)) {

    echo "New record created successfully";
}else {

    echo "Error: " . $connect . "<br>" . mysql_error($link);
}
mysqli_close($link);
?>

Answer 1

Need to grant permissions to the user@host in mysql. The grant command looks like

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

Answer 2

The value of variables:

$username = 'username';
$password = 'password';

Must be the REAL login information of your database server, something like 'root' or another user, and the password defined during the server setup.