3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<? echo preg_match('~[0-9a-zA-Z]{3,20}~', 'bob'); ?>
based on IRhSe
Output for 5.4.0 - 5.6.28, hhvm-3.10.0 - 3.13.2, 7.0.0 - 7.1.0
1
Output for 4.3.0 - 5.3.29
<? echo preg_match('~[0-9a-zA-Z]{3,20}~', 'bob'); ?>