3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = array("one", "two", "three"); foreach ($arr as $key => $value) { echo "Key: $key; Value: $value<br />\n"; } ?>
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Key: 0; Value: one<br /> Key: 1; Value: two<br /> Key: 2; Value: three<br />

preferences:
229.52 ms | 404 KiB | 290 Q