3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array(1,2,3,4); foreach ($array as &$value){ $value = $value + 10; } //unset ($value); // Must be included, $value remains after foreach loop print_r($array);
Output for 5.3.0 - 5.3.29, 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, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Array ( [0] => 11 [1] => 12 [2] => 13 [3] => 14 )
preferences:
250.36 ms | 405 KiB | 414 Q