sending Curl POSTFIELDS array - php

Question

I am trying to use CURL to post the following fields to PANDADOCS, but for some reason I am getting an error that the values are not being received on their side.
This is the error I am getting:
"type": "validation_error", "detail": {"url": ["This field is required."], "name": ["This field is required."]}}
I am posting with the following:
$docurl = "myurl.com/document.pdf";
$headr = array();
$headr[] = 'Content-length: 0';
$headr[] = 'Content-Type: application/json;charset=UTF-8';
$headr[] = "Authorization: Bearer $ACCESS_TOKEN";
$url = 'https://api.pandadoc.com/public/v1/documents';
$ch = curl_init();
curl_setopt($ch, CURLOPT_HTTPHEADER,$headr);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HEADER, FALSE);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_VERBOSE, 1);
curl_setopt($ch, CURLOPT_USERAGENT, $useragent);
$postfields = array();
$postfields['name'] = 'PSA';
$postfields['url'] = $docurl;
$postfields['recipients'] = array ([0]=>array(
['email'] => ['dondon#gmail.com'],
['first_name'] => ['don'],
['last_name'] => ['jones'],
['role']=>['u1'] ));
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query( $postfields) );
$ret = curl_exec($ch); //
when I print_r($postfields)
I get
Array ( [name] => PSA [url] => https://api.pandadoc.com/public/v1/documents [recipients] => Array ( ) )
so all the fields arent getting posted.
but whats wierd is that the URL and NAME are in the array but not the other fields yet the error is complaining about not receiving NAME and URL..
dazed and confused...
* Hostname was found in DNS cache
* Trying 54.190.72.92...
* Connected to api.pandadoc.com (54.190.72.92) port 443 (#28)
* SSL connection using TLSv1.2 / ECDHE-RSA-AES256-GCM-SHA384
* Server certificate:
* subject: OU=GT83522468; OU=See www.rapidssl.com/resources/cps (c)14; OU=Domain Control Validated - RapidSSL(R); CN=*.pandadoc.com
* start date: 2014-11-09 00:32:24 GMT
* expire date: 2016-10-11 09:34:58 GMT
* subjectAltName: api.pandadoc.com matched
* issuer: C=US; O=GeoTrust Inc.; CN=RapidSSL SHA256 CA - G3
* SSL certificate verify result: unable to get local issuer certificate (20), continuing anyway.
> POST /public/v1/documents HTTP/1.1
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/533.2 (KHTML, like Gecko) Chrome/5.0.342.3 Safari/533.2
Host: api.pandadoc.com
Accept: */*
Content-length: 0
Content-Type: application/json;charset=UTF-8
Authorization: Bearer [ACCESS TOKEN]
* upload completely sent off: 37 out of 37 bytes
< HTTP/1.1 400 BAD REQUEST
* Server nginx/1.4.6 (Ubuntu) is not blacklisted
< Server: nginx/1.4.6 (Ubuntu)
< Date: Fri, 06 Mar 2015 19:52:53 GMT
< Content-Type: application/json
< Transfer-Encoding: chunked
< Connection: keep-alive
< Vary: Accept
< Allow: GET, POST, DELETE, HEAD, OPTIONS
<
* Connection #28 to host api.pandadoc.com left intact

Answer 1

$string is not defined.
Add
$string = http_build_query( $postfields );
after
$postfields = array();
$postfields['name'] = 'PSA';
$postfields['url'] = $docurl;
// This is invalid array
$postfields['recipients'] = array ([0]=>array(
['email'] => ['dondon#gmail.com'],
['first_name'] => ['don'],
['last_name'] => ['jones'],
['role']=>['u1'] ));
http://php.net/manual/en/function.http-build-query.php
UPDATE
I just read Pandadoc API. They accept json data and your data was invalid. Also content type.
This should work:
<?php
$url = 'https://api.pandadoc.com/public/v1/documents';
$docurl = "myurl.com/document.pdf";
$postfields = array();
$postfields['name'] = 'PSA';
$postfields['url'] = $docurl;
$postfields['recipients'] = array(
array(
'email' => 'dondon#gmail.com',
'first_name' => 'don',
'last_name' => 'jones',
'role' => 'u1'
)
);
$data_string = json_encode( $postfields );
$headr = array();
$headr[] = 'Content-length: '.strlen( $data_string );
$headr[] = 'Content-type: application/json';
$headr[] = "Authorization: Bearer $ACCESS_TOKEN";
$ch = curl_init( $url );
curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, true );
curl_setopt( $ch, CURLOPT_VERBOSE, 1 );
curl_setopt( $ch, CURLOPT_SSL_VERIFYPEER, false );
curl_setopt( $ch, CURLOPT_CUSTOMREQUEST, "POST" );
curl_setopt( $ch, CURLOPT_POSTFIELDS, $data_string );
curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true );
curl_setopt( $ch, CURLOPT_HTTPHEADER, $headr );
$result = curl_exec( $ch );
?>