3v4l.org

run code in 300+ PHP versions simultaneously
<?php $kw = " asdsdfsdf \n as "; $pattern = '/^((?![[:cntrl:]' . preg_quote(',!@%^*()={};~`<>?\|', '/') . ']).)*$/u'; var_dump($pattern); var_export($pattern); echo PHP_EOL; var_dump(preg_match($pattern, $kw));
Output for git.master, git.master_jit, rfc.property-hooks
string(56) "/^((?![[:cntrl:],\!@%\^\*\(\)\=\{\};~`\<\>\?\\\|]).)*$/u" '/^((?![[:cntrl:],\\!@%\\^\\*\\(\\)\\=\\{\\};~`\\<\\>\\?\\\\\\|]).)*$/u' int(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:
50.44 ms | 401 KiB | 8 Q