将php文件连接到mysql数据库时遇到错误1045

Question

我已经尝试将我的PHP文件连接到MySQL数据库有一段时间了，现在我正在使用WAMP服务器，但遇到了错误1045，我还设置了一个密码，并尝试了网络上给出的各种设置。

this is the scenario

<?php
$link = mysqli_connect("127.0.0.1", "root", "password", "registration");

if (!$link) {
    echo "Error: Unable to connect to MySQL." . PHP_EOL;
    echo "Debugging errno: " . mysqli_connect_errno() . PHP_EOL;
    echo "Debugging error: " . mysqli_connect_error() . PHP_EOL;
    exit;
}

echo "Success: A proper connection to MySQL was made! The my_db database is great." . PHP_EOL;
echo "Host information: " . mysqli_get_host_info($link) . PHP_EOL;

mysqli_close($link);
?>

以下是我正在运行的代码，注册是数据库，我使用phpmyadmin创建了它

Answer 1

<?php
$link = mysqli_connect("127.0.0.1", "root", "", "registration");

if (!$link) {
    echo "Error: Unable to connect to MySQL." . PHP_EOL;
    echo "Debugging errno: " . mysqli_connect_errno() . PHP_EOL;
    echo "Debugging error: " . mysqli_connect_error() . PHP_EOL;
    exit;
}

echo "Success: A proper connection to MySQL was made! The my_db database is great." . PHP_EOL;
echo "Host information: " . mysqli_get_host_info($link) . PHP_EOL;

mysqli_close($link);
?>