What potential issues can arise from having different session IDs for different domains in PHP?

Having different session IDs for different domains can lead to session data not being shared between them, causing inconsistencies or errors when users navigate between domains. To solve this issue, you can set a common session cookie domain for all your domains using the session.cookie_domain configuration in your PHP code. 

<?php
// Set a common session cookie domain for all domains
ini_set('session.cookie_domain', '.yourdomain.com');

// Start the session
session_start();
?>

Keywords

session IDs domains cross-domain security vulnerabilities session hijacking

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