What are the potential pitfalls of starting sessions in PHP files?

Potential pitfalls of starting sessions in PHP files include inadvertently starting a new session on every page load, leading to unnecessary overhead and potential conflicts with existing sessions. To avoid this, it is recommended to check if a session has already been started before starting a new one. 

if (session_status() == PHP_SESSION_NONE) {
    session_start();
}

Keywords

session_start security vulnerabilities session hijacking session fixation session_regenerate_id

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