3v4l.org

run code in 300+ PHP versions simultaneously
<?php function test() { return null; } function call() { $a = null; if (!a) { return 4221412; } } call();
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Fatal error: Uncaught Error: Undefined constant "a" in /in/Hacsi:9 Stack trace: #0 /in/Hacsi(14): call() #1 {main} thrown in /in/Hacsi on line 9
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: Use of undefined constant a - assumed 'a' (this will throw an Error in a future version of PHP) in /in/Hacsi on line 9
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25
Notice: Use of undefined constant a - assumed 'a' in /in/Hacsi on line 9

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