<?php

class ProxyUtils {
    static function addProxyForCurl(&$ch) {
        if (defined('PROXY_HOST')) {
            curl_setopt($ch, CURLOPT_PROXY, "http://".PROXY_HOST);
            if (defined('PROXY_USERPWD')) {
                curl_setopt($ch, CURLOPT_PROXYUSERPWD, PROXY_USERPWD);
            }
        }
    }

    static function getStreamContextWithProxy() {
        if (!defined('PROXY_HOST'))
            return;
        $options = array(
            'http' => array(
                'method' => 'GET',
                'timeout' => '5',
                'user_agent' => 'PHP libxml agent',
                'ignore_errors' => true,
             )
          );
          $options['http']['proxy'] = 'tcp://'.PROXY_HOST;
          $options['http']['request_fulluri'] = TRUE;
          if (defined('PROXY_USERPWD')) {
              $options['http']['header'] = "Proxy-Authorization: Basic ".base64_encode(PROXY_USERPWD);
          }
          return stream_context_create($options);
    }
}

?>