What potential issues can arise when using PHP sessions on different servers?

When using PHP sessions on different servers, potential issues can arise due to session data not being shared between servers. To solve this problem, you can store session data in a shared location, such as a database or a centralized session storage service. 

// Use a custom session handler to store session data in a shared location
ini_set('session.save_handler', 'user');
ini_set('session.save_path', 'tcp://shared-session-storage:6379');

session_start();

Keywords

PHP sessions cross-server session data session hijacking session synchronization

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