3v4l.org

run code in 300+ PHP versions simultaneously
<?php $radius = 3; $blank = ' '; for ($i = 1, $diameter = $radius * 2 - 1; $i <= $diameter; $i++) { $nums = range(1, $i); $nums = array_merge($nums, array_reverse(array_slice($nums, 0, -1))); $blanks = array_fill(0, $diameter - $i, $blank); $row = array_merge($blanks, $nums, $blanks); echo join($row); }
Output for git.master, git.master_jit, rfc.property-hooks
1 121 12321 1234321 123454321

This tab shows result from various feature-branches currently under review by the php developers. Contact me to have additional branches featured.

Active branches

Archived branches

Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page

preferences:
44.11 ms | 401 KiB | 8 Q