PHP development message board tutorial: message board deletion message PHP page

Deleting a message is actually deleting the data in our database

We passed in the id of each piece of data before deleting the link

So in the PHP page Receive the id and then delete the related id to achieve the deletion function

The code is as follows

<?php
header("content-type:text/html;charset=utf-8");
$conn=mysqli_connect("localhost","root","root","ressage");
$id=$_GET['id'];
if($conn){
    $sql="delete from ressage_user where id ='$id' ";
    $que=mysqli_query($conn,$sql);
    if($que){
        echo"<script>alert('删除成功，返回首页');location.href='ressage.php';</script>";
    }else{
        echo "<script>alert('删除失败');location='" . $_SERVER['HTTP_REFERER'] . "'</script>";
        exit;
    }
}die("数据库连接失败" .mysqli_connect_error());
?>