判断http请求还是https请求

1、php判断http请求还是https请求
$http_type = ((isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') || (isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https')) ? 'https://' : 'http://';
2、js判断http请求还是https请求
`var ishttps = 'https:' == document.location.protocol ? true: false;

    if(ishttps){
        alert('https');
    }else{
        alert('http');
    }`

3、js判断手机端和PC端
`<SCRIPT type=text/javascript>

//uaredirect("/vida/xinfeng/mobi/moshare/share.html");
try {
    var urlhash = window.location.hash;
    if (!urlhash.match("fromapp"))
    {
        var ishttps = 'https:' == document.location.protocol ? 'https://': 'http://';
        //console.log(document.location.protocol);
        //console.log(ishttps);
        if ((navigator.userAgent.match(/(iPhone|iPod|Android|ios|iPad)/i)))
        {
            window.location= ishttps+"www.baidu.com/share.html";
        }

        if((navigator.userAgent.match(/(iPhone|iPod|Android|ios|iPad)/i)) && (/MicroMessenger/i.test(navigator.userAgent))){
           window.location= ishttps+"www.baidu.com/share.html";
        }
    }
}
catch(err)
{
}

</SCRIPT>`