updating mysql database after an entry is deleted - php

Question

Working on deleting an entry from my database table.
Currently the delete is working. However it deletes the "id + 1"
My script populates a "delete " button right next to an entry populated from mysql table.
When I hit delete next to an entry, it deletes the item +1.
I think it has to do with the while loop, the way I populate items.
Any ideas on how to fix this?
<?php
while($row = mysqli_fetch_array($result)) : ?>
<tr>
</table border = '1'><br><table border = '1'><th>Subject</th><th>Sender</th> <th>Message</th><th>Delete</th>
<?php
echo "<tr><td>";
echo $row['subject'];
echo "<td>";
echo $row['sender'];
echo "<td>";
echo $row['msgText'];
echo "<td>";
?>
<form action="delete.php" method="post">
<input type="hidden" name="delete_id" value="<?php $_SESSION['id'] = $row['id']; ?>" />
<input type="submit" value="Delete" />
</form>
</tr>
<?php endwhile; ?>
here is the script in delete.php
<?php
session_start();
$id = $_SESSION['id'];
$con=mysqli_connect("localhost","root","","something");
$sql = "DELETE FROM `mailbox` WHERE `id`= '$id'";
$result = mysqli_query($con,$sql);
header('Location: loggedin.php');
?>

Answer 1

<input type="hidden" name="delete_id" value="<?php $_SESSION['id'] = $row['id']; ?>" />
change it to:
<input type="hidden" name="delete_id" value="<?php echo $row['id']; ?>" />
and in your delete.php, simply replace $_SESSION['id'] to $_POST['delete_id']
P/S: By the way, you've forgot to add session_start(); in your form's php, if you do really want to use it, but not a good idea for this time.

Answer 2

The $_SESSION['id'] gets overridden each time in the loop.
Why not just simply use $_POST["delete_id"] to retrieve row id.

Answer 3

Your Table Structure is wrong
<?php
while($row = mysqli_fetch_array($result)) :
?>
<tr>
<th>Subject</th>
<th>Sender</th>
<th>Message</th>
<th>Delete</th>
</tr>
<tr>
<?php
echo "<td>";
echo $row['subject'];
echo "</td><td>";
echo $row['sender'];
echo "</td><td>";
echo $row['msgText'];
echo "</td>";
?>
<td>
<form action="delete.php" method="post">
<input type="hidden" name="delete_id" value="<?php $_SESSION['id'] = $row['id']; ?>" />
<input type="submit" value="Delete" />
</form>
</td>
</tr>
<?php endwhile; ?>
also don't use $_SESSION['id'] while deleting the records. use $_POST['delete_id']