Wim te Groen Wim te Groen - 4 months ago 13
PHP Question

Php Curl send File AND array data

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

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;