3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = "oAA34Ao#\\\\oo+--)o/"; preg_replace_callback( '/([\x00-\x1F\*\(\)\\\\])/', function ($matches) { $x = "\\".join("", unpack("H2", $matches[1])); echo $x; return $x; }, $str ); $str = " oAA34Ao#\\\\oo+--)o/"; function matches($matches) { $x = "\\".join("", unpack("H2", $matches[1])); echo $x; return $x; } mb_ereg_replace_callback( '([\x00-\x1F\*\(\)\\\\])', "matches", $str ); ?>
Output for git.master, git.master_jit, rfc.property-hooks
\5c\5c\29\5c\5c\29

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:
36.76 ms | 405 KiB | 9 Q