3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array(1, 2, 3, 4, 5); foreach($a as $key => $val) { echo $key . ' - ' . $val . '<br />'; }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 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
0 - 1<br />1 - 2<br />2 - 3<br />3 - 4<br />4 - 5<br />
preferences:
202.79 ms | 406 KiB | 313 Q