curl_exec for uploading files in box api using php fails - php

Question

I am able to upload the file using curl on the terminal with the following:
curl https://upload.box.com/api/2.0/files/content \
> -H "Authorization: Bearer {access-code}" -X POST \
> -F attributes='{"name":"tested.png", "parent":{"id":"3804480350"}}' \
> -F file=#/Applications/MAMP/htdocs/BoxappTest/test.png
But when I try to do the same using PHP with the following code:
$filePath=realPath("./test.png");
$xmlfile = file_get_contents("codes.xml");
$codes_data = simplexml_load_string($xmlfile);
$access_token=$codes_data->access_code;
$destination_filename="tested.png";
$id="3804480350";
$ch= curl_init();
curl_reset($ch);
echo "Uploading file...",'<br>';
$post = '{"name":"'.$destination_filename.'", "parent":{"id":"'.$id.'"}}';
$postfields = Array("attributes"=>$post,"file" => "#".$filePath);
$headers= Array("Authorization: Bearer " . $access_token);
curl_setopt($ch, CURLOPT_URL, "https://upload.box.com/api/2.0/files/content");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $postfields);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLINFO_HEADER_OUT, true);
$output=curl_exec($ch);
$info=curl_getinfo($ch);
curl_close($ch);
if(curl_errno($ch)) {
echo 'Curl error: ' . curl_error($ch);
}
foreach($info as $data => $part) {
echo $data."=".$part, '<br>';
}
echo "File uploaded...",'<br>';
var_dump($output);
It gives me the following output:
Uploading file...
content_type=text/html;charset=UTF-8
http_code=400
header_size=243
request_size=260
filetime=-1
ssl_verify_result=0
redirect_count=0
total_time=1.118914
namelookup_time=0.000738
connect_time=0.022878
pretransfer_time=0.100239
size_upload=335
size_download=0
speed_download=0
speed_upload=299
download_content_length=0
upload_content_length=335
starttransfer_time=1.10153
redirect_time=0
redirect_url=
primary_ip=74.112.185.182
certinfo=Array
primary_port=443
local_ip=10.0.0.188
local_port=50008
request_header=POST /api/2.0/files/content HTTP/1.1 Host: upload.box.com Accept: */* Authorization: Bearer {access-code} Content-Length: 335 Expect: 100-continue Content-Type: multipart/form-data; boundary=------------------------....
File uploaded...
string(0) ""
I have gone over various sites but none of them seem to be right for my problem. No matter what I do, the content_type stays 'text/html'. I have tried to set it in the header and the post fields. But both didn't work. I know I am getting the access codes properly and that they are valid. I am not sure about the curl options though. Setting CURLOPT_VERBOSE or checking for errors does not return anything either. While without the CURLOPT_RETURNTRANSFER option, curl_exec returns true. Can someone help me understand where I am making a mistake here?

Answer 1

I was not able to solve this problem using php itself but using shell_exec() to run the fully form curl command actually worked. So I have stuck to that implementation.
$cmd = "curl https://upload.box.com/api/2.0/files/content \
-H \"Authorization: Bearer $access_token\" -X POST \
-F attributes='{\"name\":\"$dest_name\",\"parent\": {\"id\":\"$parent_id\"}}' \
-F file=#\"$filePath\"";
$result=shell_exec($cmd);
return result;
I hope this helps somebody.

Answer 2

http_code=400 Bad Request.
Try to set your header enctype='multipart/form-data',as upload file use form.
CURLOPT_POST TRUE to do a regular HTTP POST. This POST is the normal application/x-www-form-urlencoded kind, most commonly used by HTML forms.
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