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run code in 300+ PHP versions simultaneously
<?php $i = array('1'=>true, 2=>true, '3'=>true, 4=>true); var_dump(isset(1, $i));
Output for 5.5.24 - 5.5.30, 5.6.8 - 5.6.15
Fatal error: Cannot use isset() on the result of an expression (you can use "null !== expression" instead) in /in/CJEoN on line 5
Process exited with code 255.
preferences:
164.58 ms | 1395 KiB | 22 Q