3v4l.org

run code in 300+ PHP versions simultaneously
<?php $test = 'YO_{ YO_{ YO_{ McDonalds. } } }';; $test = preg_replace_callback($p = '/YO_\{(.*)\}/s', $f = function($matches) use (&$f, &$p) { return preg_match($p, $matches[1]) ?trim(preg_replace_callback($p, $f, $matches[1])) :$matches[1]; }, $test); echo $test;
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.30, 7.0.0 - 7.0.20, 7.1.0 - 7.1.7, 7.2.29 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
McDonalds.

preferences:
65.33 ms | 2028 KiB | 4 Q