3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $subject = "#CAPTIONz"; $pattern = '/^#([A-Z]+)$/'; echo preg_match($pattern, $subject, $matches, PREG_OFFSET_CAPTURE); print_r($matches);
Output for 4.3.0 - 7.1.0
0Array ( )