What are some potential pitfalls of using PHP sessions for user authentication in a live chat application?

One potential pitfall of using PHP sessions for user authentication in a live chat application is session hijacking. To mitigate this risk, you can implement session regeneration and use HTTPS to secure communication between the client and server. 

// Enable session regeneration to prevent session hijacking
session_regenerate_id(true);

// Use HTTPS to secure communication between client and server
if ($_SERVER['HTTPS'] != 'on') {
    header("Location: https://" . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']);
    exit();
}

Keywords

PHP sessions user authentication live chat application security vulnerabilities session hijacking

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