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run code in 200+ php & hhvm versions
Bugs & Features
<?php echo dupa; ?>
Output for 7.2.0 - 7.3.0rc4
Warning: Use of undefined constant dupa - assumed 'dupa' (this will throw an Error in a future version of PHP) in /in/STKnX on line 2 dupa
Output for 4.3.0 - 7.1.20
Notice: Use of undefined constant dupa - assumed 'dupa' in /in/STKnX on line 2 dupa