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run code in 200+ php & hhvm versions
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<?php session_start(); function s(){ if (isset($_SESSION['active'])) { $_SESSION['active']='30'; } else { $_SESSION['active'] = '40'; } } echo s()['active'];
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.3.0alpha1