download.php

<?php
function detect() { 
        $userAgent = strtolower($_SERVER['HTTP_USER_AGENT']); 

        // Identify the browser. Check Opera and Safari first in case of spoof. Let Google Chrome be identified as Safari. 
        if (preg_match('/opera/', $userAgent)) { 
            $name = 'opera'; 
        } 
        elseif (preg_match('/webkit/', $userAgent)) { 
            $name = 'safari'; 
        } 
        elseif (preg_match('/msie/', $userAgent)) { 
            $name = 'msie'; 
        } 
        elseif (preg_match('/mozilla/', $userAgent) && !preg_match('/compatible/', $userAgent)) { 
            $name = 'mozilla'; 
        } 
        else { 
            $name = 'unrecognized'; 
        } 

        // What version? 
        if (preg_match('/.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/', $userAgent, $matches)) { 
            $version = $matches[1]; 
        } 
        else { 
            $version = 'unknown'; 
        } 

        // Running on what platform? 
        if (preg_match('/linux/', $userAgent)) { 
            $platform = 'linux'; 
        } 
        elseif (preg_match('/macintosh|mac os x/', $userAgent)) { 
            $platform = 'mac'; 
        } 
        elseif (preg_match('/windows|win32/', $userAgent)) { 
            $platform = 'windows'; 
        } 
        else { 
            $platform = 'unrecognized'; 
        } 

        return array( 
            'name'      => $name, 
            'version'   => $version, 
            'platform'  => $platform, 
            'userAgent' => $userAgent 
        ); 
    } 
    $agent=detect();
    $platform = $agent['platform'];
    $files = scandir(dirname(__FILE__).'/downloads');
    $files = array_filter($files,function($var){
        if($var != '.'&&$var != '..')return true;
        return false;
    });
    switch($platform){
        case 'linux':
            $is_64 = !!preg_match('/amd64|x86_64/i',$_SERVER['HTTP_USER_AGENT']);
            $files = array_filter($files,function($var) use ($is_64){
                if($is_64){
                    if(preg_match('/^mycard-.+?-x86_64-linux\..*$/',$var))return true;
                    return false;
                }
                if(preg_match('/^mycard-.+?-x86-linux\..*$/',$var))return true;
                return false;
            });
            break;
        default:
            $files = array_filter($files,function($var){
                if(preg_match('/^mycard-.+?-win32\..*$/',$var))return true;
                return false;
            });
    }
    natcasesort($files);
    $files = array_reverse($files);
    $location = "http://$_SERVER[HTTP_HOST]/downloads/";
    $location .= $files[0];
    echo $location;
?>