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Stop items with same id being add in a session

Pravesh Singh 2246 30-Oct-2014

A quick questions about sessions, I have a session with the following code


<?php
session_start();
$_SESSION['event_orders'][] = $_POST['event_id'];
?>

problem is once I add an item to the session, it can still re-add it again, therefore duplicating it.

How would one preform a check, something like "if ID exists in session, show (remove) instead of (add) button"?

session sessionid

Updated on 30-Oct-2014

Student

Can you answer this question?

Answer

30-Oct-2014

Use in_array function:

<?php
session_start();
if(!in_array($_POST['event_id'], $_SESSION['event_orders'])) {
    $_SESSION['event_orders'][] = $_POST['event_id'];
}
?>