run code in 200+ PHP versions simultaneously
<?php var_dump(preg_match("/(?!.*purchase)_total_amount/", "purchase_total_amount"));
based on sVWeH

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

Output for branch php-master
Output for branch php-master+opcache

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