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 $it) { echo "item = $it\n"; }
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
item = 1 item = 2 item = 3 item = 3
preferences:
137.16 ms | 402 KiB | 121 Q