php实现扫描二维码根据浏览器类型访问不同下载地址

    <?php
    $Agent = $_SERVER['HTTP_USER_AGENT'];
    preg_match('/android|iphone/i',$Agent,$matches);
    if (strtolower($matches[0]) == 'android') {
    // echo "安卓";
    header("Location: ".$GLOBALS["public_appconfig"]["app"]['android']."'");
    } elseif (strtolower($matches[0]) == 'iphone') {
    header("'Location: ".$GLOBALS["public_appconfig"]["app"]['ios']."'");
    }else{
    //不确定是什么系统或者是pc
    header("Location: ".$GLOBALS["public_appconfig"]["app"]['android']."'");
    }
    ?>