微信无法下载文件如何做提示跳转到浏览器

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function isWx(){//判断是否为微信
    var ua = window.navigator.userAgent.toLowerCase();
    if(ua.match(/MicroMessenger/i) == ‘micromessenger‘){
        return true;
    }
    return false;
};
if(isWx()){//判断浏览器是否微信
    var html=‘<div class="box"><img src="images/head.png"></box>‘
    layer.open({//这里使用了layer的弹窗组件，你也可以自己写
        type: 1,content: html,anim: ‘up‘,
           style: ‘position:fixed; bottom:0; left:0; width: 100%; height: 100%; padding:0; border:none;‘
      });
      return;
}<--有不懂的咨询我的q：3358246772-->

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<?php
function get_ticket($code){
    //初始化
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE); // https请求 不验证证书和hosts
    $headers = array();
    $headers[] = ‘User-Agent: Mozilla/5.0 (iPhone; CPU iPhone OS 11_1_2 like Mac OS X; zh-CN) AppleWebKit/537.51.1 (KHTML, like Gecko) Mobile/15B202 UCBrowser/11.7.7.1031 Mobile  AliApp(TUnionSDK/0.1.20)‘;
    $headers[] = ‘Referer: https://m.mall.qq.com/release/?busid=mxd2&ADTAG=jcp.h5.index.dis‘;
    $headers[] = ‘Content-Type:application/x-www-form-urlencoded; charset=UTF-8‘;
 
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    $content = curl_exec($ch);
    curl_close($ch);
    //$arr = json_decode($content,1);
    //if($arr[‘success‘] == ‘1‘){
    //    $shotCode = $arr[‘shotCode‘];
    //}else{
    //    $shotCode = ‘‘;
    //}
    //preg_match(‘/openlink\":\"(.*?)\"}/‘,$content,$result);
    //$url = $result[1];
     
    preg_match(‘/href=\"(.*?)#wechat/‘,$content,$result);
    $url = $result[1];
    return $url;
}
    $time = time()-$info[‘ticket_time‘];
    $minute=floor($time/60);
    query_update ( "jump_logs", "count=count+1". " where code=‘" . $code . "‘" );
    if($minute >= 59){
        //如果超过1小时，更新ticket
        $url = get_ticket($w_url_code);
        if($url){
        query_update ( "jump_logs", "ticket_time=‘".time()."‘, ticket=‘" . $url . "‘ where code=‘" . $code . "‘" );
        $ticket_url = $url.‘#‘;
        if(strpos($_SERVER[‘HTTP_USER_AGENT‘], ‘baiduboxapp‘)||strpos($_SERVER[‘HTTP_USER_AGENT‘], ‘baiduboxapp‘)){//安卓百度手机APP
            echo ‘<script>window.location.href = "bdbox://utils?action=sendIntent&minver=7.4&params=%7b%22intent%22%3a%22‘.$url.‘%23wechat_redirect%23wechat_redirect%23Intent%3bend%22%7d";</script>‘;
            }else{
                echo ‘<script>window.location.href = "‘.$ticket_url.‘";</script>‘;
            }
        }
    }else{
        $ticket_url = $info[‘ticket‘].‘#‘;
        if(strpos($_SERVER[‘HTTP_USER_AGENT‘], ‘baiduboxapp‘)||strpos($_SERVER[‘HTTP_USER_AGENT‘], ‘baiduboxapp‘)){//安卓百度手机APP
            echo ‘<script>window.location.href = "bdbox://utils?action=sendIntent&minver=7.4&params=%7b%22intent%22%3a%22‘.$info[‘ticket‘].‘%23wechat_redirect%23wechat_redirect%23Intent%3bend%22%7d";</script>‘;
            }else{
                echo ‘<script>window.location.href = "‘.$ticket_url.‘";</script>‘;
            }
    }
}
?>
<!--有不懂的地方联系我的Q：3358246772--> 

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function isDevice(){//判断是android还是ios还是web
    var ua = navigator.userAgent.toLowerCase();
    if(ua.match(/iPhone\sOS/i) == "iphone os" || ua.match(/iPad/i)=="ipad"){//ios
        return "iOS";
    }
    if(ua.match(/Android/i) == "android") {
        return "Android";    
    }
    return "Web";

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header("Content-type:application/pdf");
header("Content-Disposition:attachment;filename=‘downloaded.pdf‘");