PHP : Trouble developing CURL request for file upload to API

Question

I am having this problem from last few days to develop a CURL request in php to post file data to an API.

Here is the CURL request

$ curl --request POST \
    --url 'UPLOAD_URL' \
    --upload-file 'PATH_TO_FILE' \
    --header 'Authorization: Bearer YOUR_ACCESS_TOKEN'

for PATH_TO_FILE I have tried each and every method published over the web and stackoverflow too.

here is my PHP code

<?php
header('Content-Type: application/json');
$sheader = array('Authorization: Bearer '.$_SESSION['access_token']);
$filename = $_FILES['upload-file']['name'];
$filedata = $_FILES['upload-file']['tmp_name'];
$filesize = $_FILES['upload-file']['size'];
$filetype = $_FILES['upload-file']['type'];

if($filename != '')
{
 $ch = curl_init();
 $cFile = new CURLFile(realpath($filename), $filetype, 'harish.jpg');
 //$cFile = '@'. realpath($filename);
 $data = array('upload-file' => $cFile); 
 curl_setopt($ch, CURLOPT_POSTFIELDS, $cFile);
 //curl_setopt($ch, CURLOPT_POSTFIELDS, realpath($filename));
 curl_setopt($ch, CURLOPT_URL, $_POST['upload_url']);
 curl_setopt($ch, CURLOPT_HTTPHEADER, $sheader);
 curl_exec($ch);
 echo json_encode($ch);
 //echo json_encode(array('filename'=>$filename, 'temp_path'=>$filedata, 'basepath'=>realpath($filename)));

 } else {
    echo 'There is no file selected';
 }

Mostly the solution i have found on the web are these two mentioned below

Method 1 (for php < 5.5)

'@'.$filepath

Method 2 (for php > 5.5)

CURLFile($filename, $filetype, 'somefile.jpg');

or

curl_file_create($filedata, 'image/jpeg', $filename);

None of the above worked for me. I have use realpath($filename) too inside CURLFile to fetch absolute path of the file, but sadly that also not worked.

@UmashankarDas I think yes i have tried once with data-binary also. But i can try once more if you suggest the code — Harish Kumar, Jun 01 '17 at 06:07
https://stackoverflow.com/questions/6408904/send-post-request-with-data-specified-in-file-via-curl — Umashankar Das, Jun 01 '17 at 06:09
Are you trying both methods because you don't know what your PHP version is? You can determine it rather easily if you call the `phpinfo()` function. — Álvaro González, Jun 01 '17 at 08:35
got the solution here : https://stackoverflow.com/questions/44085110/upload-pano-image-using-street-view-publish-api/44669286#44669286 upload request is working with the php exec() function. Alvaro Gonzalez method is also right. But will not work here. Reason don't know — Harish Kumar, Jul 04 '17 at 12:07

Álvaro González · Answer 1 · 2017-06-01T09:31:24.970

1

I admit that CURLFile documentation is slightly ambiguous but the first constructor argument, $name, is in fact the physical path to the actual file you want to send, not the "friendly" name (which goes in the optional third argument, $postname). You should note there's something wrong since you never tell Curl about $_FILES['upload-file']['tmp_name']—it has no way to know what file you want to send.

So:

$filename = $_FILES['upload-file']['name'];
$filedata = $_FILES['upload-file']['tmp_name'];
$filesize = $_FILES['upload-file']['size'];
$filetype = $_FILES['upload-file']['type'];

$cFile = new CURLFile($filedata, $filetype, 'harish.jpg')

You aren't being notified about this because you're skipping error checking. You don't check the return value of any function, neither call curl_error() anywhere in your code.

One more error you have is that you pass the CURLFile instance this way:

curl_setopt($ch, CURLOPT_POSTFIELDS, $cFile);

Correct syntax should be like:

curl_setopt($ch, CURLOPT_POSTFIELDS, ['give_a_nice_post_name_here' => $cFile]);

edited Jun 01 '17 at 09:31

answered Jun 01 '17 at 08:43

Álvaro González

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Sorry i did n't mentioned error debugging code here. I have that on my code if (curl_errno($ch)) { $msg = curl_error($ch); $return = array('errmsg' => $msg); echo json_encode($return); } – Harish Kumar Jun 01 '17 at 09:23
I'm not good reading code in comments but I guess it's good. Curl is some times not very informative about errors. I've edited my answer. – Álvaro González Jun 01 '17 at 09:32
yes i have pass that argument too. See in my question $data = array('upload-file' => $cFile); I have tested with this too : curl_setopt($ch, CURLOPT_POSTFIELDS, $data); – Harish Kumar Jun 01 '17 at 09:48

PHP : Trouble developing CURL request for file upload to API

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