3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array_1 = array('something1', something2); $array_2 = array('something3', something4); $array_3 = array(); $array_4 = array('something1', something2); array_walk([$array_1,$array_2,$array_3,$array_4],function(&$value, $key){ });
Output for 8.1.23 - 8.1.28, 8.2.10 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Undefined constant "something2" in /in/oRB51:2 Stack trace: #0 {main} thrown in /in/oRB51 on line 2
Process exited with code 255.
Output for 5.4.0 - 5.4.22, 5.5.0 - 5.5.6
Fatal error: Only variables can be passed by reference in /in/oRB51 on line 7
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Parse error: syntax error, unexpected '[', expecting ')' in /in/oRB51 on line 7
Process exited with code 255.
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111.22 ms | 401 KiB | 85 Q