3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = "http://www.google.co.in/#hl=en&gs_rn=12&gs_ri=psy-ab&pq=bus%20online%20booking&cp=8&gs_id=20&xhr=t&q=redbus+offer+code&es_nrs=true&pf=p&sclient=psy-ab&oq=redbus+o&gs_l=&pbx=1&bav=on.2,or.r_qf.&bvm=bv.45960087,d.bmk&fp=e8cb228a72cb543b&biw=1280&bih=685"; $regex = "/\?q=(.*?)&/"; preg_match($regex, $string, $matches); var_dump($matches);

preferences:
31.15 ms | 402 KiB | 5 Q