3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(aaa => 'odin', bbb => 'dva', vvv => 'tri');
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 "aaa" in /in/JheEf:2 Stack trace: #0 {main} thrown in /in/JheEf on line 2
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
Warning: Use of undefined constant aaa - assumed 'aaa' (this will throw an Error in a future version of PHP) in /in/JheEf on line 2 Warning: Use of undefined constant bbb - assumed 'bbb' (this will throw an Error in a future version of PHP) in /in/JheEf on line 2 Warning: Use of undefined constant vvv - assumed 'vvv' (this will throw an Error in a future version of PHP) in /in/JheEf on line 2
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20
Notice: Use of undefined constant aaa - assumed 'aaa' in /in/JheEf on line 2 Notice: Use of undefined constant bbb - assumed 'bbb' in /in/JheEf on line 2 Notice: Use of undefined constant vvv - assumed 'vvv' in /in/JheEf on line 2

preferences:
126.65 ms | 402 KiB | 169 Q