Php删除函数javascript/重定向

环顾四周看了看其他答案,但仍然无法解决我的问题。用户当前在crud/视图上。php。单击“Delete”(删除)按钮将弹出一个JavaScript文本框,询问“Are you sure”(是否确定),并将其带到crud/Delete。php。

看法php会话开始:

<?php 

session_start();

if(isset($_SESSION['u_uid']))

    $uid = $_SESSION['u_id'];

    require_once('connect.php');

    $ReadSql = "SELECT * FROM `contact` WHERE users_id=$uid ORDER BY Name";
    $res = mysqli_query($connection, $ReadSql);

?>

这是我在视图上的删除按钮。php

<td> <input type="button" onClick="deleteme(<?php echo $r['u_uid']; ?>)" name="Delete" value="Delete"></td>

之后还有查看中的JavaScript消息。php

 <script language="Javascript">
 function deleteme(delid) {
 if(confirm("Are you sure you want to Delete?")){
window.location.href='delete.php?del_id='  
  }
 } 
 </script>

我的删除。我认为php就是问题所在

 <?php
  session_start();
  if(isset($_SESSION['u_uid'])){

  require_once('connect.php');

  $query = "DELETE from contact WHERE id=".$GET['del_id']." LIMIT 1"; 
  $result = mysqli_query($con, $query);  
  header('Location: crud/view.php');  

?>

非常感谢您的帮助。我是个平民。