PHP -如何在插入24小时后自动从数据库中删除数据

<?php
// 连接数据库
$servername = "数据库服务器地址";
$username = "数据库用户名";
$password = "数据库密码";
$dbname = "数据库名";

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

// 查询需要删除的数据
$sql = "SELECT * FROM 表名 WHERE 插入时间 < (NOW() - INTERVAL 1 DAY)";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    // 遍历查询结果，逐条删除数据
    while ($row = $result->fetch_assoc()) {
        $id = $row['ID'];
        $deleteSql = "DELETE FROM 表名 WHERE ID = $id";
        $conn->query($deleteSql);
    }
} else {
    echo "没有需要删除的数据";
}

$conn->close();
?>