3v4l.org

run code in 300+ PHP versions simultaneously
<?php function square($val) { return pow($val, 2); } $arr = array( 1, 2, 3, 4 ); $squares = array_map('square', $arr); $i = 0; foreach ($squares as $value) { if ($i++ > 0) { echo "."; } echo $value; } ?>
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, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
1.4.9.16
preferences:
227.5 ms | 406 KiB | 454 Q