3v4l.org

run code in 300+ PHP versions simultaneously
<?php function a() { var_dump('a called'); } function b(&$abort) { $abort = TRUE; var_dump('b called'); } function c() { var_dump('c called'); } foreach (array('a', 'b', 'c') as $handler) { $abort = FALSE; $args = array(); $args[] = &$abort; call_user_func_array($handler, $args); if ($abort) break; }
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, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 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, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
string(8) "a called" string(8) "b called"
preferences:
256.61 ms | 405 KiB | 398 Q