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run code in 300+ PHP versions simultaneously
<?php function callback($x, &$y) { $x = 42; $y = 23; } $callable = 'callback'; $a = 0; $b = 1; $c = 2; $d = 3; $callable($a, $b); call_user_func_array($callable, array(&$c, &$d)); print_r(array($a, $b, $c, $d));
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.37, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Array ( [0] => 0 [1] => 23 [2] => 2 [3] => 23 )
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Array ( [0] => 0 [1] => 23 [2] => 42 [3] => 23 )
preferences:
278.56 ms | 403 KiB | 349 Q