How can PHP debugging tools help in identifying and resolving issues related to session/cookie creation?

Session/cookie creation issues can be identified and resolved using PHP debugging tools that allow developers to track the flow of session and cookie data. By using tools like Xdebug or PHP Debug Bar, developers can inspect the session and cookie variables at different points in the code to identify where the issue is occurring. Additionally, debugging tools can help in pinpointing any errors in the session/cookie creation process and provide insights into how to fix them.

// Start a session
session_start();

// Set a session variable
$_SESSION['user_id'] = 123;

// Set a cookie
setcookie('user_name', 'John Doe', time() + 3600, '/');

// Debugging session and cookie data
var_dump($_SESSION);
var_dump($_COOKIE);