我无法使用php将信息插入到mysql数据库中

<?php
// 连接到MySQL数据库
$servername = "localhost";
$username = "your_username";
$password = "your_password";
$dbname = "your_database";

$conn = new mysqli($servername, $username, $password, $dbname);
if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
}

// 准备SQL语句
$sql = "INSERT INTO your_table (column1, column2, column3) VALUES ('value1', 'value2', 'value3')";

// 执行SQL语句
if ($conn->query($sql) === TRUE) {
    echo "信息插入成功";
} else {
    echo "错误: " . $sql . "<br>" . $conn->error;
}

// 关闭数据库连接
$conn->close();
?>