PHP connects to the database and determines whether the SQL statement is executed successfully

I must be getting increasingly lazy—just leave the code here, and I can simply copy it next time I need to use it.

<?php
// 设置数据库连接参数
$servername = "localhost"; // 服务器名
$username = "your_username"; // 用户名
$password = "your_password"; // 密码
$dbname = "your_database_name"; // 数据库名

// 创建数据库连接
$conn = new mysqli($servername, $username, $password, $dbname);

// 检查连接是否成功
if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
}

// 设置要执行的SQL语句
$sql = "INSERT INTO ";

// 执行SQL语句并获取执行结果
if ($conn->query($sql) === TRUE) {
    echo "新记录插入成功";
} else {
    echo "Error: " . $sql . "<br>" . $conn->error;
}

// 关闭数据库连接
$conn->close();
?>