3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $str = 'floor'; echo preg_replace('@(bcsqrt|bcpow|round|ceil|floor)\K|[^0-9.()+-/*%^:]@', '', $str);
Output for 4.4.9, 5.2.4 - 7.1.0
floor
Output for 4.3.0 - 4.4.8, 5.0.0 - 5.2.3