3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr1 = [1,1,2]; $arr2 = ["abc","def","ghi"]; Foreach($arr1 as $key => $id){ $threads[$id][] = $arr2[$key]; } Var_dump($threads);
Output for 7.0.0 - 7.0.23, 7.1.0 - 7.1.25, 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.15, 8.5.0 - 8.5.1
array(2) { [1]=> array(2) { [0]=> string(3) "abc" [1]=> string(3) "def" } [2]=> array(1) { [0]=> string(3) "ghi" } }
preferences:
190.99 ms | 408 KiB | 5 Q