Question

I need to pass a variable to my other page through the URL bar. I have one error: Notice: Undefined index: $id in C:\xampp\htdocs\Kyle_Site\Programming Rite\controle\delete.php on line 3

I assume that I’m getting this error from not passing correctly, but I’m not sure any help is appreciated!

I’m passing the variable here:

<a href="delete.php?id=<?php echo $username['id'] ; ?>">Delete</a></td>

Here is where the variable supposed to be passed:

<?php 
require 'core.inc.php';
$id = $_GET['$id'];
if (isset($_POST['delete'])) {
    $answer = $_POST['decision'];
    if ($answer == 'yes') {
    echo 'user deleted'; }
} 
echo '<h1>Are you sure you want to delete '.$id.'?</h1>
<form name ="form1" method ="POST" action ="delete.php">
<input type="radio" name="decision" value="yes">Yes
<input type="radio" name="decision" value="no">No
<input type="submit" name="delete" value="Delete">
</form>'; 
?>

Answer 1

Your get Variable is wrong. You should also check if the get variable is set.

<?php 
require 'core.inc.php';
if (isset($_GET['id'])
{
$id = $_GET['id']
if (isset($_POST['delete'])) {
    $answer = $_POST['decision'];
    if ($answer == 'yes') {
    echo 'user deleted'; }
} 
echo '<h1>Are you sure you want to delete '.$id.'?</h1>
<form name ="form1" method ="POST" action ="delete.php">
<input type="radio" name="decision" value="yes">Yes
<input type="radio" name="decision" value="no">No
<input type="submit" name="delete" value="Delete">
</form>';
}