带有文件附件的 PHP Curl 帖子；自定义内容类型 header

Question

我必须将一个文件连同一些发布参数一起发布到服务器。我从该服务器管理员那里收到的文档显示了发布请求应该是什么样子的示例(* 请注意 POST“multipart/x-api-remote-integration”的自定义内容类型) :

POST /gateway/remote_send HTTP/1.0

Content-Type: multipart/x-api-remote-integration; boundary=ABC1234

Content-Length: 323

--ABC1234

Content-Type: application/x-www-form-urlencoded

profile_name=username&profile_pw=password1234&attached_type=action_1

--ABC1234

Content-Type: text/csv

Content-Disposition: attachment; filename="attachment.csv"
row1
row2
row3

--ABC1234--

下面是php代码:

<?php
function post(){
    $base_api_url = "https://hostserver.com/gateway/remote_send";

    $filename = realpath("/home/username/tests/test1234qwerty.csv");

    $payload['profile_name'] = "username";
    $payload['profile_pw'] = 'password1234';
    $payload['attached_type'] = 'action_1';
    $payload['filename'] = "@" . $filename . ";type=text/csv;";

    $curl_options = array(
        CURLOPT_URL => $base_api_url,
        CURLOPT_POST => true,
        CURLOPT_POSTFIELDS => http_build_query( $payload ),
        CURLOPT_HTTP_VERSION  => 1.0,
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_VERBOSE => true,
        CURLOPT_HEADER => false,
    );

    $curl = curl_init();
    curl_setopt_array( $curl, $curl_options );
    $result = curl_exec( $curl );
    curl_close ($curl);
    echo $result;
  }

post();

从我从服务器收到的信息来看，帖子字段似乎已被正确接收。但是，它是未收到的文件。我不确定我做错了什么。非常感谢任何输入。

编辑:附加详细回复:

* About to connect() to hostserver.com port 443 (#0)
*   Trying x.x.x.x... * connected
* successfully set certificate verify locations:
*   CAfile: none
  CApath: /etc/ssl/certs
* SSL connection using DHE-RSA-AES256-SHA
*   ******** REDACTED ************
*   SSL certificate verify ok.
> POST /gateway/remote_send HTTP/1.0
Host: hostserver.com
Accept: */*
Content-Length: 110
Content-Type: application/x-api-remote-integration

* upload completely sent off: 110out of 110 bytes
< HTTP/1.1 200 OK
< Date: Mon, 19 Aug 2013 16:00:38 GMT
< Server: Apache/2.2.15 (Red Hat)
< Pragma: no-cache
< CacheControl: no-cache
< Cache-Control: no-cache
< Expires: -1
< Connection: close
< Content-Type: multipart/x-api-remote-integration; boundary=remote_send-52124126
<
* Closing connection #0
HTTP/1.1 200 OK
Date: Mon, 19 Aug 2013 16:00:38 GMT
Server: Apache/2.2.15 (Red Hat)
Pragma: no-cache
CacheControl: no-cache
Cache-Control: no-cache
Expires: -1
Connection: close
Content-Type: multipart/x-vcg-remote-api; boundary=remote_send-52124126

--remote_send-52124126
Content-Type: application/x-www-form-urlencoded

result=invalid_filename
--remote_send-52124126--

我知道服务器读取的用户名和密码数据是正确的，因为我用错误的信息进行了测试并收到了凭据错误。

Answer 1

当您告诉 cURL 上传文件时，Content-Type header 会自动设置为 multipart/form-data。对于文档中的请求，您必须手动上传文件。

<?php
$url     = 'https://hostserver.com/gateway/remote_send';
$payload = array(
    'profile_name'  => 'username',
    'profile_pw'    => 'password1234',
    'attached_type' => 'action_1'
);
$file = realpath('/home/username/tests/test1234qwerty.csv');

// build multipart
$payload = http_build_query($payload);
$params  = "--ABC1234\r\n"
    . "Content-Type: application/x-www-form-urlencoded\r\n"
    . "\r\n"
    . $payload . "\r\n"
    . "--ABC1234\r\n"
    . "Content-Type: text/csv\r\n"
    . "Content-Disposition: attachment; filename=\"attachment.csv\"\r\n"
    . "\r\n"
    . file_get_contents($file) . "\r\n"
    . "--ABC1234--";

$first_newline      = strpos($params, "\r\n");
$multipart_boundary = substr($params, 2, $first_newline - 2);
$request_headers    = array();
$request_headers[]  = 'Content-Length: ' . strlen($params);
$request_headers[]  = 'Content-Type: multipart/x-api-remote-integration; boundary='
    . $multipart_boundary;

// send the request now

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $params);
curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);
curl_setopt($ch, CURLOPT_HTTPHEADER, $request_headers);

$reply = curl_exec($ch);

这样行吗？