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POPHP: start session only when necessary
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copied!<p>I have my own Session class, which handles session actions. I wanted to make a mechanism, that the session starts only when it is needed - if no session variables are set, system does not create it.</p> <p>So that's the code (simplified):</p> <pre><code>class Session { public function __construct() { } protected function startSession($onlyIfExists = false) { if (session_id() == '') { if ($onlyIfExists && !isset($_COOKIE[session_name()])) return; @session_start(); } } public function setVar($id, $value) { $this->startSession(); $_SESSION[$id] = $value; } public function getVar($id) { $this->startSession(true); //starts session only if the session-id cookie exists (if the session was already started for this user) if (isset($_SESSION) && array_key_exists($id, $_SESSION)) return $_SESSION[$id]; else return NULL; } } </code></pre> <p>And then I just always have to use this class object to get/set session variables, e.g.:</p> <pre><code>$session = new Session(); $session->getVar('test'); //does not start session at the first time $session->setVar('test', 1); //starts session; after refreshing the page the above line does start session (cookie exists) and the value=1 is returned </code></pre> <p>Is it a good solution? Do you see any potential drawbacks, vulnerabilities? Or maybe it is a standard to start session each time?</p> <p>Because in my application any session variables are created only after authorization, so I don't need session for 99.999% of users.</p> <p>Thank you in advance.</p>

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