I actually had to do all this
Code:
// if (CURL_PROXY_REQUIRED == 'True') {
// $proxy_tunnel_flag = (defined('CURL_PROXY_TUNNEL_FLAG') && strtoupper(CURL_PROXY_TUNNEL_FLAG) == 'FALSE') ? false : true;
// curl_setopt ($ch, CURLOPT_HTTPPROXYTUNNEL, $proxy_tunnel_flag);
curl_setopt ($ch, CURLOPT_PROXYTYPE, CURLPROXY_HTTP);
curl_setopt ($ch, CURLOPT_PROXY,"http://proxy.shr.secureserver.net:3128");
// curl_setopt ($ch, CURLOPT_PROXY, CURL_PROXY_SERVER_DETAILS);
// }
I wasn't sure where to define CURL_PROXY_REQUIRED, so I just commented it out. For this server, good enough.