3v4l.org

run code in 300+ PHP versions simultaneously
<?php function encode($str) { return preg_replace('/(.)\1*/', function($match) { return strlen($match[1]) . $match[2]; }, $str); } function decode($str) { return preg_replace('/(\d+)(\D)/', function($match) { return str_repeat($match[2], $match[1]); }, $str); } echo encode('WWWWWWWWWWWWBWWWWWWWWWWWWBBBWWWWWWWWWWWWWWWWWWWWWWWWBWWWWWWWWWWWWWW'), "\n"; echo decode('12W1B12W3B24W1B14W'), "\n";
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught TypeError: preg_replace(): Argument #2 ($replacement) must be of type array|string, Closure given in /in/aV9eF:3 Stack trace: #0 /in/aV9eF(3): preg_replace('/(.)\\1*/', Object(Closure), 'WWWWWWWWWWWWBWW...') #1 /in/aV9eF(10): encode('WWWWWWWWWWWWBWW...') #2 {main} thrown in /in/aV9eF on line 3
Process exited with code 255.

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:
41.96 ms | 401 KiB | 8 Q