How can PHP beginners effectively debug session variable issues?

Session variable issues in PHP can often be debugged by checking if the session has been started, ensuring the correct session variable is being accessed, and verifying that the variable is being set properly. One effective way to debug session variable issues is to use the session_start() function at the beginning of the PHP script to ensure the session is started before accessing or setting any session variables. 

<?php
session_start();

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

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

echo $username;
?>

Keywords

PHP debugging session variables troubleshooting error messages

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