Delete the value out of an array

Question

I am a noob programmer so sorry in advance, but I have a problem with deleting a value out of my array.

Here I foreach my session wich is an array if multiple values are added, I check if it's an array if it is I loop trough it and echo it. I made a delete link that makes a get id(key).

 foreach ($session->get('results') as $num => $value) {
                if (!is_array($value)) {
                    echo $value . '<br>';
                } else {
                    $av = count($value);
                    for ($a = 0; $a < $av; $a++)
                        echo $value[$a] . '<a href="export.php?key='. $num .'">verwijder</a><br>';
                }

When the link is clicked it makes a get id, I check if get id is set. now I want to unset the value which has the same $key as the get id.

if (isset($_GET['key'])) {
                    if (is_array($value)) {
                            unset($value[$_GET['key']]);
                    }
                }

At this moment the get id gets created but it doesn't unset the value with the same key. Has someone an answer to this, or an other way to do this?

Answer 1

$session->get('results') as $num => $value

$num is your key of the element in $session->get('results')

your link -> <a href="export.php?key='. $num .'

if you want to delete the value with this key unset($session->get('results')[$_GET['key']])