3v4l.org

run code in 300+ PHP versions simultaneously
<?php if(preg_match('/MSIE (.*?);/', "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)" ) || preg_match('/^(?=.*(Trident))(?=.*(rv:11.0)).*$/', "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)" )) { $url = 'IE detected'; } else { $url = 'not detected'; } echo $url;
Output for 5.3.7 - 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 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 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
IE detected
preferences:
196.11 ms | 404 KiB | 269 Q