3v4l.org

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<?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);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.7, 7.2.29 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(0) { }

preferences:
184.67 ms | 405 KiB | 309 Q