ini_set中的会话未按预期工作

Question

I have set the session.gc_maxlifetime and session.cookie_lifetime. As documented on the site, it gc_maxlifetime should set the maximum session time and setting cookie_lifetime to 0 should destroy the session. But its not working as expected.

I have following code in my php file :

ini_set('session.gc_maxlifetime', 3600); // For testing I keep it for 10 sec
ini_set('session.cookie_lifetime', 0);
session_start();
if ($_GET['set']) {
  $_SESSION['test'] = 'test';
}

if ($_GET['delete']) {
  session_destroy();
}
print_r($_SESSION);

Answer 1

It's best to do this sort of thing globally in php.ini, because all scripts have a chance (based on gc_probability / gc_divisor) to trigger the garbage collection and they will do so based on their own current settings.

If this is not possible, a workaround is to set a custom session_save_path in your script.