3v4l.org

run code in 500+ PHP versions simultaneously
<?php $isd0 = defined('SID'); ini_set('session.use_cookies', 0); ini_set('session.use_only_cookies', 0); session_start(); $sid1 = SID; session_destroy(); session_start(); $sid2 = SID; var_dump($isd0); var_dump($sid1); var_dump($sid2);

preferences:
99.74 ms | 1178 KiB | 5 Q