Inserting delete button for each table not working - mysql

Question

I did try some solutions from the same problem with mine but nothings working. I bet it's totally in my code. I'm trying to place them in every table that has been looped, It worked I was able to get a button on every table but I can't get them to work. Here's my code
<?php
$con = new PDO('mysql:host=localhost; dbname=library_member', $username = 'root', $password = '');
$q = "SELECT * FROM user_list";
$stmt = $con->prepare($q);
$stmt -> execute();
?>
<table border="1">
<td>ID</td>
<td>Firstname</td>
<td>Lastname</td>
<td>Address</td>
<td>Contact</td>
<td>Email</td>
<?php while ($row = $stmt->fetch(PDO::FETCH_ASSOC)){?>
<tr>
<td><?php echo $row['id']; ?></td>
<td><?php echo $row['firstname']; ?></td>
<td><?php echo $row['lastname']; ?></td>
<td><?php echo $row['address']; ?></td>
<td><?php echo $row['contact']; ?></td>
<td><?php echo $row['email']; ?></td>
<td><button><a href='library-delete.php?id=$id/'>Delete</a></button></td>
</tr>
<?php } ?>
</table>
And this is the code for where the deleting happens.
<?php
$con = new PDO('mysql:host=localhost; dbname=library_member', $username = 'root', $password = '');
$q = "DELETE FROM user_list WHERE id = :id";
$stmt = $con->prepare($q);
$stmt->bindParam( ':id' , $_GET['id'], PDO::PARAM_INT);
$stmt->execute();
echo "<script type='text/javascript'>
alert('Information have been deleted.');
window.location='library-showlist.php';
</script>";
?>
It would just directly send me on the prompt part. None of my input data is deleted.

Answer 1

Try to change your code like this:
library-delete.php?id=<?php echo $row['id']?>