3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php preg_match_all( '/\[([\w]*?)\:([\w\W\s]*?)\]/' , '[email:optin|<u>Optin</u>]' , $matches); echo $class = "Frontburner_Tag_" . ucfirst( trim( strtolower( $matches[1][0] ) ) );
Output for 4.3.0 - 7.2.0
Frontburner_Tag_Email