从 PHP 表单 POST 通过 cURL 发送文件

问题描述：

我正在编写一个 API，我想处理从 POST 表单上传的文件.表单的标记并不复杂:

I'm writing an API and I'm wanting to handle file uploads from a form POST. The markup for the form is nothing too complex:

<form action="" method="post" enctype="multipart/form-data">
  <fieldset>
    <input type="file" name="image" id="image" />
    <input type="submit" name="upload" value="Upload" />
  </fieldset>
</form>

但是，我很难理解如何处理此服务器端并与 cURL 请求一起发送.

However, I'm having difficulties understanding how to handle this server-side and send along with a cURL request.

我熟悉使用带有数据数组的 cURL 发送 POST 请求，并且我在上传文件时阅读的资源告诉我在文件名前加上 @象征.但是这些相同的资源有一个硬编码的文件名，例如

I'm familiar with sending POST requests with cURL with a data array, and resources I've read on uploading files tell me to prefix the filename with an @ symbol. But these same resources have a hard-coded file name, e.g.

$post = array(
    'image' => '@/path/to/myfile.jpg',
    ...
);

这是哪个文件路径?我会在哪里找到它?会不会像 $_FILES['image']['tmp_name']，在这种情况下，我的 $post 数组应该是这样的:

Well which file path is this? Where would I find it? Would it be something like $_FILES['image']['tmp_name'], in which case my $post array should look like this:

$post = array(
    'image' => '@' . $_FILES['image']['tmp_name'],
    ...
);

还是我的做法不对?任何建议将不胜感激.

Or am I going about this the wrong way? Any advice would be most appreciated.

如果有人可以给我一个代码片段，说明我将使用以下代码片段的位置，那么我将不胜感激.我主要关注我将作为 cURL 参数发送的内容，以及如何在接收脚本中使用这些参数的示例(为了参数，我们将其称为 curl_receiver.php).

If someone could give me a code snippet of where I would go with the following code snippets then I'd be most grateful. I'm mainly after what I would send as cURL parameters, and a sample of how to use those parameters with the receiving script (let's call it curl_receiver.php for argument's sake).

我有这个网络表单:

<form action="script.php" method="post" enctype="multipart/form-data">
  <fieldset>
    <input type="file" name="image />
    <input type="submit" name="upload" value="Upload" />
  </fieldset>
</form>

这将是 script.php:

if (isset($_POST['upload'])) {
    // cURL call would go here
    // my tmp. file would be $_FILES['image']['tmp_name'], and
    // the filename would be $_FILES['image']['name']
}

答

以下是一些将文件发送到 ftp 的生产代码(可能对您来说是一个很好的解决方案):

Here is some production code that sends the file to an ftp (may be a good solution for you):

// This is the entire file that was uploaded to a temp location.
$localFile = $_FILES[$fileKey]['tmp_name']; 

$fp = fopen($localFile, 'r');

// Connecting to website.
$ch = curl_init();

curl_setopt($ch, CURLOPT_USERPWD, "email@email.org:password");
curl_setopt($ch, CURLOPT_URL, 'ftp://@ftp.website.net/audio/' . $strFileName);
curl_setopt($ch, CURLOPT_UPLOAD, 1);
curl_setopt($ch, CURLOPT_TIMEOUT, 86400); // 1 Day Timeout
curl_setopt($ch, CURLOPT_INFILE, $fp);
curl_setopt($ch, CURLOPT_NOPROGRESS, false);
curl_setopt($ch, CURLOPT_PROGRESSFUNCTION, 'CURL_callback');
curl_setopt($ch, CURLOPT_BUFFERSIZE, 128);
curl_setopt($ch, CURLOPT_INFILESIZE, filesize($localFile));
curl_exec ($ch);

if (curl_errno($ch)) {

    $msg = curl_error($ch);
}
else {

    $msg = 'File uploaded successfully.';
}

curl_close ($ch);

$return = array('msg' => $msg);

echo json_encode($return);

从 PHP 表单 POST 通过 cURL 发送文件

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