如何让自己的网站实现电脑访问Https，手机访问http?

如果你使用的是nginx,可以修改你的配置文件如下实现

server {  
 server_name **.**; #你的网站  
 listen 443; 
 ssl on;
 ssl_certificate  /usr/local/nginx/conf/server.crt;
 ssl_certificate_key  /usr/local/nginx/conf/server_nopwd.key; 
 location / {  
     if ($http_user_agent ~ "((MIDP)|(WAP)|(UP.Browser)|(Smartphone)|(Obigo)|(Mobile)|(AU.Browser)|(wxd.Mms)|(WxdB.Browser)|(CLDC)|(UP.Link)|(KM.Browser)|(UCWEB)|(SEMC\-Browser)|(Mini)|(Symbian)|(Palm)|(Nokia)|(Panasonic)|(MOT)|(SonyEricsson)|(NEC)|(Alcatel)|(Ericsson)|(BENQ)|(BenQ)|(Amoisonic)|(Amoi)|(Capitel)|(PHILIPS)|(SAMSUNG)|(Lenovo)|(Mitsu)|(Motorola)|(SHARP)|(WAPPER)|(LG)|(EG900)|(CECT)|(Compal)|(kejian)|(Bird)|(BIRD)|(G900/V1.0)|(Arima)|(CTL)|(TDG)|(Daxian)|(DAXIAN)|(DBTEL)|(Eastcom)|(EASTCOM)|(PANTECH)|(Dopod)|(Haier)|(HAIER)|(KONKA)|(KEJIAN)|(LENOVO)|(Soutec)|(SOUTEC)|(SAGEM)|(SEC)|(SED)|(EMOL)|(INNO55)|(ZTE)|(iPhone)|(Android)|(Windows CE)|(Wget)|(Java)|(curl)|(Opera))"){  
        rewrite ^/(.*)$ http://**。**/$1 ;  
  }  
} 

server{
    server_name **.**;
    listen 80;
    location /{
        if ($http_user_agent ~ "常见桌面UA"){
            rewrite ^/(.*)$ https://**。**/$1 ;  
        }

    }

}

或者在index.php上进行判定

<?php
$the_host = $_SERVER['HTTP_HOST'];//取得当前域名
$the_url = isset($_SERVER['REQUEST_URI']) ? $_SERVER['REQUEST_URI'] : '';//判断地址后面部分


if(is_mobile_user_agent()//判断UA是否手机浏览器或者PC浏览器。此函数的实现自己去百度搜
{
    header('HTTP/1.1 301 Moved Permanently');
    header('Location:http://**.**'.$the_url); //
}
?>