Unset certain items from session array when they're clicked? - php

Question

What I'm basically looking for is the ability to remove a certain item from the array when that item is clicked, for this instance... If I hit "Two", it will disappear.
Demo: http://query.notesquare.me
CODE:
<form method="post">
<input type="text" id="input-create-playlist" placeholder="Playlist Name" name="create_playlist" />
<input type="submit" id="button-create-playlist" value="Create Playlist" />
</form>
<?php
ini_set("session.save_path", "/home/kucerajacob/public_html/query.notesquare.me/test-sessions");
session_start();
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
$create_playlist = $_POST['create_playlist'];
$_SESSION['user_playlists'][] = $create_playlist;
}
$playlists = array("One", "Two", "Three");
if (isset($_SESSION['user_playlists'])) {
for ($i = 0; $i < count($_SESSION['user_playlists']); $i++) {
array_unshift($playlists, $_SESSION['user_playlists'][$i]);
}
}
$_SESSION['main'] = $playlists;
for ($i = 0; $i < count($playlists); $i++) {
echo $playlists[$i] . "<br />";
}
?>

Answer 1

Its possible, you'll need to handle that request as well. If you want the click posted, a simple <button> next to that should suffice.
Upon rendering the markup, (of course using the session array) use the key which can be used in unsetting the values.
<?php
// initialization
if(empty($_SESSION['user_playlists'])) {
$_SESSION['user_playlists'] = array("One", "Two", "Three");
}
if(isset($_POST['add'], $_POST['create_playlist'])) {
// handle additions
$_SESSION['user_playlists'][] = $_POST['create_playlist'];
}
if(isset($_POST['remove'])) {
// handle remove
$key = $_POST['remove'];
unset($_SESSION['user_playlists'][$key]);
}
?>
<form method="post">
<input type="text" id="input-create-playlist" placeholder="Playlist Name" name="create_playlist" />
<input type="submit" id="button-create-playlist" name="add" value="Create Playlist" />
<hr/>
<?php foreach($_SESSION['user_playlists'] as $k => $p): ?>
<?php echo $p; ?> <button type="submit" name="remove" value="<?php echo $k; ?>">Remove</button><br/>
<?php endforeach; ?>
</form>
Sample Demo

Answer 2

Try below:
for ($i = 0; $i < count($playlists); $i++) {
// echo $playlists[$i] . "<br />";
printf('%1$s<br/>', $playlists[$i]);
}
if ($_GET['query'])
{
unset($playlists['query']);
}