3v4l.org

run code in 300+ PHP versions simultaneously
<?php <?php $arr = array(1, 2, 3, 4); foreach ($arr as &$value) { $value = $value * 2; } echo $arr; ?>
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.29
Parse error: syntax error, unexpected '<' in /in/2HpPS on line 2
Process exited with code 255.
preferences:
172.96 ms | 1399 KiB | 66 Q