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run code in 150+ php & hhvm versions
Bugs & Features
<?php echo SESS_ID;
Output for 4.3.0 - 5.6.25, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Notice: Use of undefined constant SESS_ID - assumed 'SESS_ID' in /in/tuD0d on line 3 SESS_ID