Php Curl send File AND array data - php

Question

I want to send complex Post data with Curl.
The data i try to send:
Array
(
[test] => Array
(
[0] => 1
[1] => 2
[2] => 3
)
[file] => CURLFile Object
(
[name] => H:\wwwroot\curl/upload.txt
[mime] =>
[postname] =>
)
)
I need to use the variables in the post-side as $_POST["test"] and $_FILES["file"]
But i can not realize that. For the (sometimes multidimensional) array-data i need http_build_query but that breaks the file. If i don`t use http_build_query my array gives an "array to string conversion" error.
How can i get this to work?
Code:
Index.php
$curl = curl_init();
$postValues = Array("test" => Array(1,2,3));
$postValues["file"] = new CurlFile(dirname(__FILE__). "/upload.txt");
curl_setopt($curl, CURLOPT_URL, "localhost/curl/post.php");
curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_POSTFIELDS, $postValues);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);
$curlResult = curl_exec($curl);
$curlStatus = curl_getinfo($curl);
echo $curlResult;
post.php
print_r($_REQUEST);
print_r($_FILES);

Answer 1

After very long research to manage the same problem, I think that a simpler solution could be:
$postValues = Array("test[0]" => 1, "test[1]" => 2, "test[2]" => 3);
this is the right way to emulate what happen on browsers
<input type="hidden" name="test[0]" value="1">
<input type="hidden" name="test[1]" value="2">
...
The result is:
Array
(
[test] => Array
(
[0] => 1
[1] => 2
[2] => 3
)
)
Array
(
[file] => Array
(
[name] => upload.txt
[type] => application/octet-stream
[tmp_name] => /tmp/phprRGsPU
[error] => 0
[size] => 30
)
)

Answer 2

After long research and testing i`ve got the (not very nice but working) solution:
function createHttpHeader($postValues, $overrideKey = null) {
global $delimiter;
// invalid characters for "name" and "filename"
$disallow = array("\0", "\"", "\r", "\n");
$data = Array();
if (!is_array($postValues)) {
$postValues = Array($postValues);
}
foreach($postValues as $key => $value) {
$useKey = $overrideKey === null ? $key : $overrideKey. "[$key]";
$useKey = str_replace($disallow, "_", $useKey);
if (is_array($value)) {
$data = array_merge($data, addPostData($value, $useKey));
} else {
$data[] = "--". $delimiter. "\r\n";
$data[] = "Content-Disposition: form-data; name=\"". $useKey. "\"";
if (is_a($value, "\CurlFile")) {
$data[] = "; filename=\"". basename($value->name). "\"\r\n";
$data[] = "Content-Type: application/octet-stream\r\n\r\n";
$data[] = file_get_contents($value->name). "\r\n";
} else {
$data[] = "\r\n\r\n". $value. "\r\n";
}
}
}
return $data;
}
Test with:
$postValues = Array(
"blaat" => 1,
"test" => Array(1,2,3),
"grid" => Array(0 => array(1,2), 1 => array(4,5)),
"gridComplex" => Array("rows" => array(1,2), "columns" => array(0 => array(1,2,3,4), 1 => array(4,5,4,5)))
);
$postValues["file[0]"] = new CurlFile($file, "text/plain");
$postValues["file[1]"] = new CurlFile($file, "text/plain");
// print_r(new CurlFile($file));exit;
$delimiter = "-------------" . uniqid();
$data = createHttpHeader($postValues);
$data[] = "--" . $delimiter . "--\r\n";
$data = implode("", $data);
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, "localhost/curl/post.php");
curl_setopt($curl, CURLOPT_HTTPHEADER , array('Content-Type: multipart/form-data; boundary=' . $delimiter, 'Content-Length: ' . strlen($data)));
curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);
$curlResult = curl_exec($curl);
echo $curlResult;
Edit: addition the addPostData function:
function addPostData($postValues, $delimiter, $overrideKey = null) {
// invalid characters for "name" and "filename"
$disallow = array("\0", "\"", "\r", "\n");
$data = Array();
if (!is_array($postValues)) {
$postValues = Array($postValues);
}
foreach($postValues as $key => $value) {
$useKey = $overrideKey === null ? $key : $overrideKey. "[$key]";
$useKey = str_replace($disallow, "_", $useKey);
if (is_array($value)) {
$data = array_merge($data, $this->addPostData($value, $delimiter, $useKey));
} else {
$data[] = "--". $delimiter. "\r\n";
$data[] = "Content-Disposition: form-data; name=\"". $useKey. "\"";
if (is_a($value, "\CurlFile")) {
$data[] = "; filename=\"". basename($value->postname). "\"\r\n";
$data[] = "Content-Type: ". $value->mime. "\r\n\r\n";
$data[] = file_get_contents($value->name). "\r\n";
} else {
$data[] = "\r\n\r\n". $value. "\r\n";
}
}
}
return $data;
}