3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<? echo preg_match('~^[0-9a-zA-ZäöüÄÖÜß]{3,20}$~', 'bob ßä'); ?>
based on S7O1M
Output for 5.4.34 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
0
Output for 4.3.0 - 5.4.32
<? echo preg_match('~^[0-9a-zA-ZäöüÄÖÜß]{3,20}$~', 'bob ßä'); ?>