3v4l.org

run code in 300+ PHP versions simultaneously
<?php $myArray=array('aa' => array('d' => 'r'), 'aa2' => array('d' => 'r')); reset($myArray); while (list ($key, $val) = each ($myArray) ) { var_dump($key); var_dump($val); }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Call to undefined function each() in /in/UOaAr:5 Stack trace: #0 {main} thrown in /in/UOaAr on line 5
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /in/UOaAr on line 5 string(2) "aa" array(1) { ["d"]=> string(1) "r" } string(3) "aa2" array(1) { ["d"]=> string(1) "r" }
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.3.32 - 7.3.33
string(2) "aa" array(1) { ["d"]=> string(1) "r" } string(3) "aa2" array(1) { ["d"]=> string(1) "r" }

preferences:
293.69 ms | 403 KiB | 376 Q