Tryin' to curl

/**
 * Custom submit handler for shib_auth Advanced Settings form
 */
function qdr_sso_shib_auth_admin_advanced_form_submit($form, &$form_state) {
  // Set ShibAuthTermsVer in Dataverse db to update the value of the latest T&C version
  $terms_ver = $form_state[values]['shib_auth_terms_ver'];
  $data = http_build_query(array('ShibAuthTermsVer' => $terms_ver);
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL, "http://localhost:8080/api/v1/admin/settings");
  curl_setopt($ch, CURLOPT_HTTPHEADER, array('X-HTTP-Method-Override: PUT'));
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
  $response = curl_exec($ch);
  curl_close($ch);
}