3v4l.org

run code in 300+ PHP versions simultaneously
<?php $in = array(); for($i = 1; $i <=5; $i++) { $in['category_id'] = ['sss','ssss'] ; } $res = array();// Array where we will write result $t = &$res; // Link to first level foreach ($in as $key =>$k) { // Walk through source array if (empty($t[$key])) { // Check if current level has required key $t[$key] = []; // If does not, create empty array there $t = &$t[$key]; // And link to it now. So each time it is link to deepest level. } } unset($t); // Drop link to last (most deep) level var_dump($res);
Output for git.master, git.master_jit, rfc.property-hooks
array(1) { ["category_id"]=> array(0) { } }

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:
63.32 ms | 401 KiB | 8 Q