run code in 300+ PHP versions simultaneously
<?php echo preg_replace('/^回复\s+@([^@\s]+)[\s+: | |:]+/', '', '回复 @海超 !');

Shows result from various feature-branches currently under review from the php developers. Contact me to have additional branches featured.

Output for branch master

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