Have my user agent code:

<?php

/* USER-AGENTS
================================================== */
function check_user_agent ( $type = NULL ) {
        $user_agent = strtolower ( $_SERVER['HTTP_USER_AGENT'] );
        if ( $type == 'bot' ) {
                // matches popular bots
                if ( preg_match ( "/googlebot|adsbot|yahooseeker|yahoobot|msnbot|watchmouse|pingdom\.com|feedfetcher-google/", $user_agent ) ) {
                        return true;
                        // watchmouse|pingdom\.com are "uptime services"
                }
        } else if ( $type == 'browser' ) {
                // matches core browser types
                if ( preg_match ( "/mozilla\/|opera\//", $user_agent ) ) {
                        return true;
                }
        } else if ( $type == 'mobile' ) {
                // matches popular mobile devices that have small screens and/or touch inputs
                // mobile devices have regional trends; some of these will have varying popularity in Europe, Asia, and America
                // detailed demographics are unknown, and South America, the Pacific Islands, and Africa trends might not be represented, here
                if ( preg_match ( "/phone|iphone|itouch|ipod|symbian|android|htc_|htc-|palmos|blackberry|opera mini|iemobile|windows ce|nokia|fennec|hiptop|kindle|mot |mot-|webos\/|samsung|sonyericsson|^sie-|nintendo/", $user_agent ) ) {
                        // these are the most common
                        return true;
                } else if ( preg_match ( "/mobile|pda;|avantgo|eudoraweb|minimo|netfront|brew|teleca|lg;|lge |wap;| wap /", $user_agent ) ) {
                        // these are less common, and might not be worth checking
                        return true;
                }
        }
        return false;
}

?>

How to use:

<?php
$ismobile = check_user_agent('mobile');
if($ismobile) {
return 'yes';
} else {
return 'no';
}
?>
  • 55
Reply Report
      • 1
    • This code still works. But some things have changed. Apple iPhone puts Mozilla in front of their user agent now. So first check mobile and then desktop.
      • 2
    • in the line for mobile, add a |Mobile| to detect firefox mobile on android. Besides great script finally i found a true php one that worked thumbs up, kuddos !
    • Oh and if some device isnt working just ad an echo $user_agent; to find its name. somehow i noticed the script halts when it couldnt detect (firefox)

I wrote this script to detect a mobile browser in PHP.

The code detects a user based on the user-agent string by preg_match()ing. It has 100% accuracy on all current mobile devices and I'm currently updating it to support more mobile devices as they come out. The code is called isMobile and is as follows:

function isMobile() {
    return preg_match("/(android|avantgo|blackberry|bolt|boost|cricket|docomo|fone|hiptop|mini|mobi|palm|phone|pie|tablet|up\.browser|up\.link|webos|wos)/i", $_SERVER["HTTP_USER_AGENT"]);
}

You can use it like this:

// Use the function
if(isMobile())
    // Do something for only mobile users
else
    // Do something for only desktop users

To redirect a user to your mobile site, I would do this:

// Create the function, so you can use it
function isMobile() {
    return preg_match("/(android|avantgo|blackberry|bolt|boost|cricket|docomo|fone|hiptop|mini|mobi|palm|phone|pie|tablet|up\.browser|up\.link|webos|wos)/i", $_SERVER["HTTP_USER_AGENT"]);
}
// If the user is on a mobile device, redirect them
if(isMobile())
    header("Location: http://m.yoursite.com/");

Let me know if you have any questions and good luck!

  • 28
Reply Report

At work, we use WURFL - there are millions of different browsers out there, and you're better of to re-use the work that others with experience did in that regard than implementing your own solution.

  • 4
Reply Report
      • 1
    • Might be helpful to show or link to an example of using WURFL in PHP to accomplish what the @Gromdroid wants.

Warm tip !!!

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