js 和 php 判断 是否的微信和其他的网页

if (strpos($_SERVER['HTTP_USER_AGENT'], 'MicroMessenger') !== false) {
$wx = WX_AUTHORIZE . "?appid=" . WX_APP_ID . "&redirect_uri=" . $urlencode .
"&response_type=code&scope=snsapi_userinfo&state=STATE&connect_redirect=1#wechat_redirect";
header("Location:" . $wx);
}

function isWeChat()
{
var userAgentInfo = navigator.userAgent;
var Agents = new Array("MicroMessenger");
var flag = false;
for (var v = 0; v < Agents.length; v++) {
if (userAgentInfo.indexOf(Agents[v]) > 0) { flag = true; break; }
}
return flag;
}

function is_weibo(){
var ua = navigator.userAgent;
if(ua.indexOf('Weibo') > -1) {
return true;
} else {
return false;
}
}