3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = ['a','b']; $y = array_map($x, function($x){ throw new \Exception(); }); var_dump($y);
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: array_map(): Argument #1 ($callback) must be a valid callback or null, class "a" not found in /in/aI72r:5 Stack trace: #0 /in/aI72r(5): array_map(Array, Object(Closure)) #1 {main} thrown in /in/aI72r on line 5
Process exited with code 255.
Output for 8.0.0 - 8.0.30
Fatal error: Uncaught TypeError: array_map(): Argument #1 ($callback) must be a valid callback, class "a" not found in /in/aI72r:5 Stack trace: #0 /in/aI72r(5): array_map(Array, Object(Closure)) #1 {main} thrown in /in/aI72r on line 5
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: array_map() expects parameter 1 to be a valid callback, class 'a' not found in /in/aI72r on line 5 NULL
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/aI72r on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/aI72r on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/aI72r on line 3
Process exited with code 255.

preferences:
265.04 ms | 401 KiB | 358 Q