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php通过p3p头解决cookie跨域访

Jun 06, 2016 pm 07:56 PM
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欢迎进入Linux社区论坛,与200万技术人员互动交流 >>进入 php中通过设置p3p头解决cookie跨域访问问题: 大家都知道cookie是不能跨域的,但可以通过设置p3p头来解决这个问题。 为了测试先编辑hosts文件,加入测试域名(在C:\WINDOWS\system32\drivers\etc\hos

欢迎进入Linux社区论坛,与200万技术人员互动交流 >>进入

    php中通过设置p3p头解决cookie跨域访问问题:

    大家都知道cookie是不能跨域的,但可以通过设置p3p头来解决这个问题。

    为了测试先编辑hosts文件,加入测试域名(在C:\WINDOWS\system32\drivers\etc\hosts)

    127.0.0.1 www.a.com

    127.0.0.1 www.b.com

    首先:创建 a_setcookie.php 文件,内容如下:

    //header('P3P: CP="CURa ADMa DEVa PSAo PSDo OUR BUS UNI PUR INT DEM STA PRE COM NAV OTC NOI DSP COR"');

    setcookie("test", $_GET['id'], time()+3600, "/", ".a.com");

    然后:创建 a_getcookie.php 文件,内容如下:

    var_dump($_COOKIE);

    最后:创建 b_setcookie.php 文件,内容如下:

    三个文件创建完毕后,我们通过浏览器依次访问:

    我们会发现,在访问b.com域的时候,我们并没有在a.com域设置上cookie值。

    然后我们修改一下a_setcookie.php文件,去掉注释符号,a_setcookie.php即为:

    header('P3P: CP="CURa ADMa DEVa PSAo PSDo OUR BUS UNI PUR INT DEM STA PRE COM NAV OTC NOI DSP COR"');

    setcookie("test", $_GET['id'], time()+3600, "/", ".a.com");

    再次通过浏览器依次访问:

    这次,你会发现在访问b.com域的时候,我们设置了a.com域的cookie值。

    似乎只有IE对跨域访问COOKIE限制比较严格,上述代码在FIREFOX下测试,即使不发送P3P头信息,也能成功。

php通过p3p头解决cookie跨域访

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