What is the correct syntax for session variables in PHP?
When working with session variables in PHP, it is important to properly initialize the session using session_start() at the beginning of your script. To set a session variable, you can use the $_SESSION superglobal array followed by the variable name you want to set. Make sure to assign a value to the variable using the assignment operator (=).
<?php
// Start the session
session_start();
// Set a session variable
$_SESSION['username'] = 'JohnDoe';
?>