php- curl is not working?

Question

I am trying to send POST requests to Digitalocean's API v2 with cURL and custom headers but it is not working. I don't get any response, or the output/response I get is only:

Response from API:

My php code is:

<?php
$TOKEN = "digitalocean api token";

$headers = array("Authorization: Bearer $TOKEN","Content-Type: application/json",);

 $name = "Test"; //droplet name
 $region = "nyc2"; //region
 $size = "512mb"; //size
 $image = "303022"; //replace it
 $user_data = "#!/bin/bash apt-get install nginx -y";

$postData = array(
'name' => $name,
'region' => $region,
'size' => $size,
'image' => $image,
'user_data' => $user_data,);

$post_body = '';
foreach($postData as $key => $value) {
$post_body.= urlencode($key) . '=' . urlencode($value) . '&';
}
$post_body = rtrim($post_body, '&');

$ch = curl_init();
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_URL, "https://api.digitalocean.com/v2/droplets");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_body);
$result = curl_exec($ch);

echo "Response from API: $result";
?>

Please tell me what's wrong in it? I have error reporting enabled.

Why aren't you simply passing the $postData array to curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);? No need to process it that way. You're also missing a curl_close call at the end, and you really should be passing the authentication stuff as CURL options, not in the headers array (see the manual for the options that allow you to do all this) — Elias Van Ootegem
– Elias Van Ootegem, Commented Oct 30, 2014 at 16:14
Don't try to encode the post data yourself. Use PHP's built-in http_build_query function for that: curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($postData)); — gen_Eric
– gen_Eric, Commented Oct 30, 2014 at 16:15
The api docs of digitalocean mentions to use headers for auth. and curl_close() isn't necessary — Appfestive Reports
– Appfestive Reports, Commented Oct 30, 2014 at 16:16
@EliasVanOotegem: Note that with CURLOPT_POSTFIELDS: If value is an array, the Content-Type header will be set to multipart/form-data. — gen_Eric
– gen_Eric, Commented Oct 30, 2014 at 16:17
@AppfestiveReports: I've already pointed the header issue out in my answer (and in one of the comments above) — Elias Van Ootegem
– Elias Van Ootegem, Commented Oct 30, 2014 at 16:28

Elias Van Ootegem · Accepted Answer · 2014-10-30 16:24:57Z

1

After looking at the $headers array more closely, I noticed you're sending your content as application/json, but at the same time, the postfields value does not match that content type. You'll probably have to add this:

$postFields = json_encode($postData);
$headers[] = 'Content-Length: ' . strlen($postFields));
//set your opts
curl_setopt($ch, CURLOPT_POSTFIELDS, $postFields);//json encoded string

If that doesn't work, add the result of

var_dump(curl_getinfo($ch));

To your question, that'll tell you everything there is to know about the status of your curl request.

answered Oct 30, 2014 at 16:24

Elias Van Ootegem

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2 Comments

gen_Eric Over a year ago

I don't know if Content-Length is really necessary.

Elias Van Ootegem Over a year ago

@RocketHazmat: I can guarantee you it isn't. I'm just a bit anal about some things, and setting length headers is just one of the things I tend to do.

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