3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $str = 'round(12)'; echo preg_replace('/((?!bcsqrt|bcpow|round|ceil|floor)\w+)+|[^0-9\.\(\)\+\-\/\*%\^:]/', '', $str);
Output for 4.3.0 - 7.1.0
()