3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $str = "( 小黄蜂250 OR 小黄峰 OR 幻影150 ) "; var_dump($str = preg_replace('/((\()\s|\s(\)))/', '$2', $str));
Output for 4.3.0 - 7.2.0
string(41) "(小黄蜂250 OR 小黄峰 OR 幻影150 "