Detecting mobile or tablet device

Question

The aim for me is to have a mobile website (for mobiles and tablets) and a responsive desktop website, built on Wordpress. I want the easiest way to implement fool proof dev

Answer 1

For Mobile Detection on PHP I have always used the $_SERVER['HTTP_USER_AGENT'] variable. I use the function below to have very granular control over who gets delivered the mobile site (specific devices I want to support). Simply add useragents to the array (such as 'Ipad') to add additional devices.

function detectmobile(){
    $agent = $_SERVER['HTTP_USER_AGENT'];
    $useragents = array (
        "iPhone",
        "iPod",
        "Android",
        "blackberry9500",
        "blackberry9530",
        "blackberry9520",
        "blackberry9550",
        "blackberry9800",
        "webOS"
        );
        $result = false;
    foreach ( $useragents as $useragent ) {
    if (preg_match("/".$useragent."/i",$agent)){
            $result = true;
        }
    }
return $result;
}
if (detectmobile() == true) { wp_redirect('http://pageyouwwanttoredirectto'); }

Usage: you can the above code to your wordpress theme's functions.php file.