3v4l.org

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

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
git.master0.0190.01516.56
git.master_jit0.0090.01316.53
rfc.partials0.0260.00416.50
rfc.literals0.0260.00316.69

preferences:
175.24 ms | 451 KiB | 5 Q