Docusign DEMO account authentication using REST API not working - php

Question

I am new to Docusign. I have a developer account and tryging to use REST API with PHP to establish connection with the API but i have stumble across and error, the Error is calling webservice and status is 0. Below is my code:
$username = "xxxxxx";
$password = "xxxxxx";
$integrator_key = "xxxxxxx";
// construct the authentication header:
$header = "<DocuSignCredentials><Username>" . $email . "</Username><Password>" . $password . "</Password><IntegratorKey>" . $integratorKey . "</IntegratorKey></DocuSignCredentials>";
$url = "https://demo.docusign.net/restapi/v2/login_information";
$curl = curl_init($url);
curl_setopt($curl, CURLOPT_HEADER, false);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_HTTPHEADER, array("X-DocuSign-Authentication: $header"));
$json_response = curl_exec($curl);
$status = curl_getinfo($curl, CURLINFO_HTTP_CODE);
//echo $status;
if ( $status != 200 ) {
echo "error calling webservice, status is:" . $status;
exit(-1);
}
$response = json_decode($json_response, true);
$accountId = $response["loginAccounts"][0]["accountId"];
$baseUrl = $response["loginAccounts"][0]["baseUrl"];
curl_close($curl);

Answer 1

This is most likely caused by security software, firewall, or other network interference on your (client) side since your request works just fine when you send through the API Explorer. I recommend tracing your request through your network to see where it is getting held up.