3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<? echo preg_match('~[0-9a-zA-Z]~+', '&'); ?>
based on vDFRu
Output for 5.4.34 - 7.2.0
Warning: preg_match(): Unknown modifier '+' in /in/6UR1u on line 3
Output for 4.3.0 - 5.4.32
<? echo preg_match('~[0-9a-zA-Z]~+', '&'); ?>