Question

I want to know when a Windows Phone is on page so having it’s user agent that is

   Mozilla/5.0 (compatible; MSIE 9.0; Windows Phone OS 7.5; Trident/5.0; IEMobile/9.0;)

I use this code, without luck. What am I missing here?

if (strpos($_SERVER['HTTP_USER_AGENT'], Windows Phone) == false) {
 echo"mango";
 } 

I also tried Phone, IEMobile but nothing.

Answer 1

Looks like you’re missing some quotes around your search string. Also, you appear to be checking for the wrong condition. strpos() returns false if it can’t find the string. You want to check for non-false results

// using stripos for case-insensitive search
if (stripos($_SERVER['HTTP_USER_AGENT'], 'windows phone') !== false) {
    echo 'mango';
}