.php后缀的url地址在浏览器打开怎么不让他下载，而是访问

下面是代码

error_reporting(0);

if($_GET['open']==1 && strpos($_SERVER['HTTP_USER_AGENT'], 'MicroMessenger')!==false){

header("Content-Disposition: attachment; filename=\"load.doc\"");

header("Content-Type: application/vnd.ms-word;charset=utf-8");

}

?>

Welcome

body,html{width:100%;height:100%}

*{margin:0;padding:0}

body{background-color:#fff}

.top-bar-guidance{font-size:15px;color:#fff;height:40%;line-height:1.8;padding-left:20px;padding-top:20px;background:url(//gw.alicdn.com/tfs/TB1eSZaNFXXXXb.XXXXXXXXXXXX-750-234.png) center top/contain no-repeat}

.top-bar-guidance .icon-safari{width:25px;height:25px;vertical-align:middle;margin:0 .2em}

.app-download-btn{display:block;width:214px;height:40px;line-height:40px;margin:18px auto 0 auto;text-align:center;font-size:18px;color:#2466f4;border-radius:20px;border:.5px #2466f4 solid;text-decoration:none}

点此继续访问

var url = 'https://www.baidu.com/';//更改需要跳转的地址

document.querySelector('body').addEventListener('touchmove', function (event) {

event.preventDefault();

});

window.mobileUtil = (function(win, doc) {

var UA = navigator.userAgent,

isAndroid = /android|adr/gi.test(UA),

isIOS = /iphone|ipod|ipad/gi.test(UA) && !isAndroid,

isBlackBerry = /BlackBerry/i.test(UA),

isWindowPhone = /IEMobile/i.test(UA),

isMobile = isAndroid || isIOS || isBlackBerry || isWindowPhone;

return {

isAndroid: isAndroid,

isIOS: isIOS,

isMobile: isMobile,

isWeixin: /MicroMessenger/gi.test(UA),

isQQ: /QQ/gi.test(UA)

};

})(window, document);

if(mobileUtil.isWeixin){

if(mobileUtil.isIOS){

url = "https://t.asczwa.com/taobao?backurl=" + encodeURIComponent(url);

document.getElementById('BtnClick').href=url;

}else if(mobileUtil.isAndroid){

url = '?open=1';

document.getElementById('BtnClick').href=url;

var iframe = document.createElement("iframe");

iframe.style.display = "none";

iframe.src = url;

document.body.appendChild(iframe);

}

}else{

document.getElementById('BtnClick').href=url;

window.location.replace(url);

}

//setTimeout('WeixinJSBridge.invoke("closeWindow", {}, function(e) {})', 2000);