3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php class Test { function __wakeup() { print "wakeup\n"; } } session_start(); session_decode('core|a:1:{s:23:"_session_validator_data";a:4:{s:11:"remote_addr";s:9:"127.0.0.1";s:8:"http_via";s:0:"";s:20:"http_x_forwarded_for";s:0:"";s:15:"http_user_agent";s:45:"}}test|O:4:"Test":0:{}fooo|a:1:{i:0;a:1:{s:5:";}}'); var_dump($_SESSION);
based on b5hFf
Output for 5.3.20 - 7.2.0
array(1) { ["core"]=> array(1) { ["_session_validator_data"]=> array(4) { ["remote_addr"]=> string(9) "127.0.0.1" ["http_via"]=> string(0) "" ["http_x_forwarded_for"]=> string(0) "" ["http_user_agent"]=> string(45) "}}test|O:4:"Test":0:{}fooo|a:1:{i:0;a:1:{s:5:" } } }