如何从不同的域饼干PHP和JavaScript [英] how to get cookies from a different domain with php and javascript

问题描述

假设我有一个cookie集first.com说用户。现在，我想读的second.com该Cookie通过JavaScript和Ajax。但它不是working.I已经得到xmlHttp.status = 0。

样品code

在第二个领域readcookie.php文件

  VAR XMLHTTP;
    功能createXMLHtt prequest（）{
        如果（window.ActiveXObject）
            XMLHTTP =新的ActiveXObject（Microsoft.XMLHTTP）;
        如果（window.XMLHtt prequest）
            XMLHTTP =新XMLHtt prequest（）;
    }
    功能readcookie（）{

        createXMLHtt prequest（）;
        xmlHttp.open（GET，http://www.first.com/cookie.php，真正的）;
        xmlHttp.onreadystatechange =的getCookie;
        xmlHttp.send（空）;
    }
    功能的getCookie（）{
        如果（xmlHttp.readyState == 4）{
            如果（xmlHttp.status == 200）{
                VAR回复= xmlHttp.responseText;
                如果（回复）{
                    警报（答复）;
                }
            }
            其他
                警报（xmlHttp.status）;
        }
    }
 

在第一个域cookie.php文件

 如果（使用isset（$ _ COOKIE ['用户']））{
        回声$ _COOKIE ['用户'];
    }
    其他{
        的setcookie（'用户'，'A2345，0）;
        回声$ _COOKIE ['用户'];
    }
 

解决方案

您不能从另一个域读取cookies - 结束

我能想到的唯一的办法就是增加一些code到第2域获取饼干给你，然后把这个在页面上的第一个域，iframe中。

您显然需要完全访问两个域能够做这种事情。

Suppose i have a cookie set in first.com say user. Now i want to read that cookie in second.com through javascript and ajax. But it is not working.I have got xmlHttp.status=0.

sample code

in the second domain readcookie.php file

var xmlHttp;
    function createXMLHttpRequest(){
        if(window.ActiveXObject)
            xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
        if(window.XMLHttpRequest)
            xmlHttp=new XMLHttpRequest();
    }
    function readcookie(){

        createXMLHttpRequest(); 
        xmlHttp.open("GET","http://www.first.com/cookie.php",true);
        xmlHttp.onreadystatechange=getcookie;
        xmlHttp.send(null);
    }
    function getcookie(){
        if(xmlHttp.readyState==4){
            if(xmlHttp.status==200){
                var reply=xmlHttp.responseText;
                if(reply){
                    alert(reply);
                }
            }
            else
                alert(xmlHttp.status);
        }
    }

in the first domain cookie.php file

if(isset($_COOKIE['user'])){
        echo $_COOKIE['user'];
    }
    else{
        setcookie('user','a2345',0);
        echo $_COOKIE['user'];
    }

解决方案

You can't read cookies from another domain - end of.

The only way I can think of is to add some code to the 2nd domain that gets the cookies for you and then to place this in a page on the 1st domain, in an iframe.

You obviously need full access to both domains to be able to do this kind of thing.

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