3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $str = "( 小黄蜂250 OR 小黄峰 OR 幻影150 ) "; var_dump($str = preg_replace('/\(\s?(^\s.*^\s)\s?\)/', '($1)', $str));
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
string(44) "( 小黄蜂250 OR 小黄峰 OR 幻影150 ) "