What happens if the session ID is not passed in PHP?

If the session ID is not passed in PHP, the session will not be able to be properly identified and maintained across multiple requests. This can lead to issues with session data being lost or not persisting between page loads. To solve this issue, you can manually start the session and retrieve the session ID if it is not passed in the request. 

<?php
session_start();

if(!isset($_COOKIE[session_name()])) {
    session_regenerate_id();
}

$sessionId = session_id();

// Use $sessionId as needed

Keywords

session ID PHP session_start session_regenerate_id session hijacking

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