Are there any best practices for detecting and redirecting mobile devices in PHP?

When detecting and redirecting mobile devices in PHP, it is best practice to use user-agent detection to identify mobile devices. Once a mobile device is detected, you can then redirect the user to a mobile-friendly version of your website or a specific mobile page. 

$mobile_agents = array("iPhone","iPad","Android","webOS","BlackBerry","Windows Phone");

function isMobileDevice(){
    $user_agent = $_SERVER['HTTP_USER_AGENT'];
    global $mobile_agents;
    foreach($mobile_agents as $agent){
        if(strpos($user_agent, $agent) !== false){
            return true;
        }
    }
    return false;
}

if(isMobileDevice()){
    header("Location: mobile-friendly-page.php");
    exit();
}

Keywords

User-Agent mobile devices detection redirection PHP functions

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