3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = []; print $a['hello'] ? 'world' : 'universe'; print "\n";
Output for 8.0.1 - 8.0.20, 8.1.0 - 8.1.7
Warning: Undefined array key "hello" in /in/uYM30 on line 5 universe
Output for 7.4.0 - 7.4.30
Notice: Undefined index: hello in /in/uYM30 on line 5 universe

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18.45 ms | 410 KiB | 5 Q