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run code in 200+ php & hhvm versions
Bugs & Features
<?php $s='a:9:{s:9:"all_users";s:1:"0";s:19:"primary_usergroupid";a:7:{i:0;s:2:"36";i:1;s:2:"19";i:2;s:2:"20";i:3;s:2:"26";i:4;s:2:"22";i:5;s:2:"21";i:6;s:1:"2";}s:21:"secondary_usergroupid";a:1:{i:0;s:1:"0";}s:23:"not_primary_usergroupid";a:1:{i:0;s:1:"0";}s:25:"not_secondary_usergroupid";a:1:{i:0;s:1:"0";}s:13:"joindateafter";s:0:"";s:14:"joindatebefore";s:0:"";s:17:"lastactivityafter";s:0:"";s:18:"lastactivitybefore";s:0:"";}'; print_r( unserialize($s));
based on 2PGCK
Output for 4.3.0 - 7.2.0
Array ( [all_users] => 0 [primary_usergroupid] => Array ( [0] => 36 [1] => 19 [2] => 20 [3] => 26 [4] => 22 [5] => 21 [6] => 2 ) [secondary_usergroupid] => Array ( [0] => 0 ) [not_primary_usergroupid] => Array ( [0] => 0 ) [not_secondary_usergroupid] => Array ( [0] => 0 ) [joindateafter] => [joindatebefore] => [lastactivityafter] => [lastactivitybefore] => )