3v4l.org

run code in 300+ PHP versions simultaneously
<?php $s=''; if(isset($s['h']['h'])) print 'Seted'; else print 'Not seted';
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.9, 5.3.6 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Not seted
Output for 5.2.10 - 5.2.17, 5.3.0 - 5.3.5
Notice: Uninitialized string offset: 0 in /in/tAbG2 on line 3 Not seted

preferences:
327.32 ms | 402 KiB | 454 Q