Ensuring Complete PHP Session Termination
Various approaches exist for destroying PHP sessions, but the most effective method involves a two-step process: deleting the session data and invalidating the session ID.
To achieve this, consider the following steps:
<code class="php">session_start(); // Clear session data $_SESSION = array();</code>
<code class="php">// Send cookie to expire session if (isset($_COOKIE[session_name()])) { $params = session_get_cookie_params(); setcookie(session_name(), '', 1, $params['path'], $params['domain'], $params['secure'], isset($params['httponly'])); }</code>
<code class="php">session_destroy();</code>
For enhanced security, consider implementing the following additional measures:
<code class="php">if (!isset($_SESSION['CREATED'])) { // Initiate session and set flag session_regenerate_id(true); $_SESSION['CREATED'] = time(); }</code>
<code class="php">if (time() - $_SESSION['CREATED'] > ini_get('session.gc_maxlifetime')) { // Swap session ID periodically session_regenerate_id(true); $_SESSION['CREATED'] = time(); }</code>
These comprehensive measures ensure thorough session termination, preventing unauthorized access and maintaining session integrity over the long term.
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