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<?php

$ch = curl_init();

curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);

curl_setopt($ch, CURLOPT_URL, "https://platform.ringcentral.com/restapi/oauth/token");

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

curl_setopt($ch, CURLOPT_POSTFIELDS, "username=+xxxxxx&password=password#&extension=102&grant_type=password");

curl_setopt($ch, CURLOPT_POST, 1);

curl_setopt($ch, CURLOPT_USERPWD, "PYS9kaDdSey5j72ljRCfDw" . ":" . "JV4wWOkJTX5sJf-OZDD_fgJJ-uZODeSPeXxdhMUtsTAN");

$headers = array();

$headers[] = "Accept: application/json";

$headers[] = "Content-Type: application/x-www-form-urlencoded";

curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

$result = curl_exec($ch);

$results = (json_decode($result));

$token = $results -> access_token;

$ch = curl_init();

curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);

curl_setopt($ch, CURLOPT_URL, "https://platform.ringcentral.com/restapi/v1.0/account/~/extension/~/fax");

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

curl_setopt($ch, CURLOPT_POST,1);

curl_setopt($ch, CURLOPT_POSTFIELDS, array(

'from' => '+xxxxx',

'to' => '+xxxxxx',

'name'=>'sample.pdf',

'attachments'=> '@'.realpath('sample.pdf'),

'coverpagetext' => 'PHP FaxOut Via cURL'

));

$headers = array();

$headers[] = "Accept: application/json";

$headers[] = "Accept: application/pdf";

$headers[] = "Authorization: Bearer $token";

$headers[] = "Content-Type: multipart/form-data";

curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

$result1 = curl_exec($ch);

print_r($result1);

if (curl_errno($ch)) {

echo 'Error:' . curl_error($ch);

}

curl_close ($ch);

?>

Response

{ "uri" : "https://platform.ringcentral.com/restapi/v1.0/account/628394008/extension/628447008/message-store/986620102017", "id" : 986620102017, "to" : [ { "phoneNumber" : "+12158600723", "location" : "Newtown, PA", "messageStatus" : "Queued" } ], "type" : "Fax", "creationTime" : "2019-05-29T07:09:48.000Z", "readStatus" : "Unread", "priority" : "Normal", "attachments" : [ { "id" : 986620102017, "uri" : "https://media.ringcentral.com/restapi/v1.0/account/628394008/extension/628447008/message-store/986620102017/content/986620102017", "type" : "RenderedDocument", "contentType" : "application/pdf" } ], "direction" : "Outbound", "availability" : "Alive", "messageStatus" : "Queued", "faxResolution" : "High", "faxPageCount" : 0, "lastModifiedTime" : "2019-05-29T07:09:48.752Z", "coverIndex" : 7 }