带有php标头的CORS

Question

我有一个简单的PHP脚本,我正在尝试跨域CORS请求:

<?php
header("Access-Control-Allow-Origin: *");
header("Access-Control-Allow-Headers: *");
...

但我仍然得到错误:

X-Requested-With不允许请求标头字段Access-Control-Allow-Headers

我缺少什么？

Answer 1

正确处理CORS请求有一点涉及.这是一个将更充分(和正确)响应的功能.

/**
 *  An example CORS-compliant method.  It will allow any GET, POST, or OPTIONS requests from any
 *  origin.
 *
 *  In a production environment, you probably want to be more restrictive, but this gives you
 *  the general idea of what is involved.  For the nitty-gritty low-down, read:
 *
 *  - https://developer.mozilla.org/en/HTTP_access_control
 *  - http://www.w3.org/TR/cors/
 *
 */
function cors() {

    // Allow from any origin
    if (isset($_SERVER['HTTP_ORIGIN'])) {
        // Decide if the origin in $_SERVER['HTTP_ORIGIN'] is one
        // you want to allow, and if so:
        header("Access-Control-Allow-Origin: {$_SERVER['HTTP_ORIGIN']}");
        header('Access-Control-Allow-Credentials: true');
        header('Access-Control-Max-Age: 86400');    // cache for 1 day
    }

    // Access-Control headers are received during OPTIONS requests
    if ($_SERVER['REQUEST_METHOD'] == 'OPTIONS') {

        if (isset($_SERVER['HTTP_ACCESS_CONTROL_REQUEST_METHOD']))
            // may also be using PUT, PATCH, HEAD etc
            header("Access-Control-Allow-Methods: GET, POST, OPTIONS");         

        if (isset($_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS']))
            header("Access-Control-Allow-Headers: {$_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS']}");

        exit(0);
    }

    echo "You have CORS!";
}

Answer 2

Access-Control-Allow-Headers不允许*作为可接受的值,请参阅此处的Mozilla文档.

您应该发送接受的标题(首先X-Requested-With是错误说明),而不是星号.

Answer 3

我得到了同样的错误,并在我的后端脚本中使用以下PHP修复它:

header('Access-Control-Allow-Origin: *');

header('Access-Control-Allow-Methods: GET, POST');

header("Access-Control-Allow-Headers: X-Requested-With");

Answer 4

互联网范围内的许多描述都没有提到指定Access-Control-Allow-Origin是不够的.这是一个适合我的完整示例:

<?php
    if ($_SERVER['REQUEST_METHOD'] === 'OPTIONS') {
        header('Access-Control-Allow-Origin: *');
        header('Access-Control-Allow-Methods: POST, GET, DELETE, PUT, PATCH, OPTIONS');
        header('Access-Control-Allow-Headers: token, Content-Type');
        header('Access-Control-Max-Age: 1728000');
        header('Content-Length: 0');
        header('Content-Type: text/plain');
        die();
    }

    header('Access-Control-Allow-Origin: *');
    header('Content-Type: application/json');

    $ret = [
        'result' => 'OK',
    ];
    print json_encode($ret);

Answer 5

我只是设法让dropzone和其他插件使用此修复程序(angularjs + php后端)

 header('Access-Control-Allow-Origin: *'); 
    header("Access-Control-Allow-Credentials: true");
    header('Access-Control-Allow-Methods: GET, PUT, POST, DELETE, OPTIONS');
    header('Access-Control-Max-Age: 1000');
    header('Access-Control-Allow-Headers: Origin, Content-Type, X-Auth-Token , Authorization');

将此添加到upload.php或您发送请求的位置(例如,如果您有upload.html,则需要将文件附加到upload.php,然后复制并粘贴这4行).此外,如果你在chrome/mozilla中使用CORS插件/插件,请确保多次切换它们,以便启用CORS

Answer 6

如果要从PHP创建CORS服务,可以使用此代码作为处理请求的文件的第一步:

// Allow from any origin
if(isset($_SERVER["HTTP_ORIGIN"]))
{
    // You can decide if the origin in $_SERVER['HTTP_ORIGIN'] is something you want to allow, or as we do here, just allow all
    header("Access-Control-Allow-Origin: {$_SERVER['HTTP_ORIGIN']}");
}
else
{
    //No HTTP_ORIGIN set, so we allow any. You can disallow if needed here
    header("Access-Control-Allow-Origin: *");
}

header("Access-Control-Allow-Credentials: true");
header("Access-Control-Max-Age: 600");    // cache for 10 minutes

if($_SERVER["REQUEST_METHOD"] == "OPTIONS")
{
    if (isset($_SERVER["HTTP_ACCESS_CONTROL_REQUEST_METHOD"]))
        header("Access-Control-Allow-Methods: POST, GET, OPTIONS, DELETE, PUT"); //Make sure you remove those you do not want to support

    if (isset($_SERVER["HTTP_ACCESS_CONTROL_REQUEST_HEADERS"]))
        header("Access-Control-Allow-Headers: {$_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS']}");

    //Just exit with 200 OK with the above headers for OPTIONS method
    exit(0);
}
//From here, handle the request as it is ok

Answer 7

当使用 angular 4 作为客户端和 PHP 作为服务器端时，这些代码对我来说很有效。

header("Access-Control-Allow-Origin: *");

Answer 8

这应该有效

header("Access-Control-Allow-Origin: *");
header("Access-Control-Allow-Headers: X-Requested-With, Content-Type, Origin, Cache-Control, Pragma, Authorization, Accept, Accept-Encoding");

Answer 9

如果我们没有正确理解它的功能,CORS会变得很头疼.我在PHP中使用它们,它们可以正常工作.这里参考

header("Access-Control-Allow-Origin: *");
header("Access-Control-Allow-Credentials: true");
header("Access-Control-Max-Age: 1000");
header("Access-Control-Allow-Headers: X-Requested-With, Content-Type, Origin, Cache-Control, Pragma, Authorization, Accept, Accept-Encoding");
header("Access-Control-Allow-Methods: PUT, POST, GET, OPTIONS, DELETE");

Answer 10

我使用了这 5 个标头，然后解决了 cors 错误（后端：PHP，前端：VUE JS）

header('Access-Control-Allow-Origin: *');
header('Access-Control-Allow-Methods: GET, PUT, POST, DELETE, OPTIONS, post, get');
header('Access-Control-Max-Age: 3600');
header('Access-Control-Allow-Headers: Origin, Content-Type, X-Auth-Token');
header('Access-Control-Allow-Credentials: true');