Are there any common mistakes that PHP beginners make when working with sessions and cookies?

One common mistake that PHP beginners make when working with sessions and cookies is not starting the session before trying to set or get session variables. To solve this issue, always start the session using `session_start()` at the beginning of your PHP script. 

<?php
// Start the session
session_start();

// Set a session variable
$_SESSION['username'] = 'JohnDoe';

// Get the session variable
$username = $_SESSION['username'];

// Display the username
echo $username;
?>

Keywords

PHP sessions cookies beginners mistakes

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