mysql table not deleting values - php

Question

I have a mysql data table that holds user information such as name,department,extension and phone number
Now I have a delete query that deletes a user based on the extension number the admin enters.
It was working yesterday and I have not changed a thing so I have no idea what could be wrong.
According to my code it must delete the user and then display the table. Now it does all that but the user still exists.
<?php
error_reporting(0);
require ("database.php");
session_start();
if (!isset($_SESSION['CheckLogin'])) { header("Location: login.php"); }
if($_POST['action'])
{
$this_user_ext =$_GET['extension'];
// sending query
mysql_query("DELETE FROM users WHERE extension = '$this_user_ext'")
or die(mysql_error());
include('maildelete.php');
$extension=$_POST['extension'];
header("Location: index.php");
}
?>
<center>
<form action="" method="post">
Enter 4 Digit Extension Number :
<br>
<input type="text" name="extension">
<br>
<h2>
<input type="submit" name="action" value="Delete Extension">
<br>
</h2>
<h3>
Main Menu
</h3>
</form>
</center>

Answer 1

You have used POST method but you are using $_GET so
change $this_user_ext =$_GET['extension']; to $this_user_ext =$_POST['extension'];

Answer 2

Inside your form's tag having a method POST. You're sending the POST request, not the GET request. Use this code instead $this_user_ext = $_POST['extension'];

Answer 3

<?php
error_reporting(0);
require ("database.php");
session_start();
if (!isset($_SESSION['CheckLogin'])) { header("Location: login.php"); }
if($_POST['action'])
{
$this_user_ext =$_POST['extension'];
// sending query
mysql_query("DELETE FROM users WHERE extension = '".$this_user_ext."'")
or die(mysql_error());
include('maildelete.php');
$extension=$_POST['extension'];
header("Location: index.php");
}
?>
<center><form action="" method="post">
Enter 4 Digit Extension Number :<br><input type="text" name="extension">
<br><h2><input type="submit" name="action" value="Delete Extension">
<br></h2>
<h3>
Main Menu
</h3>
</form>
</center>
I hope U got it :) Enjoy..