3v4l.org

run code in 300+ PHP versions simultaneously
<?php $list = [1,2,3,4]; foreach($list as &$it) { // DO NOTHING } // not unset $it foreach($list as $it2) { echo "item = $it2\n"; }
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
item = 1 item = 2 item = 3 item = 4
preferences:
72.98 ms | 406 KiB | 5 Q