3v4l.org

run code in 300+ PHP versions simultaneously
<?php $ar[0]=1; $ar[1]=2; $ar[2]=3; $ar2=$ar; print_r($ar2); some_func('arg',...$ar); print_r($ar2); // same as in $ar function some_func($a, &...$arr){ $arr[0]='one'; $arr[1]='two'; $arr[2]='three'; }
Output for 7.0.7 - 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] => 1 [1] => 2 [2] => 3 ) Array ( [0] => 1 [1] => 2 [2] => 3 )
Output for 7.0.0 - 7.0.6
Array ( [0] => 1 [1] => 2 [2] => 3 ) Array ( [0] => one [1] => two [2] => three )
preferences:
117.59 ms | 401 KiB | 168 Q