gistfile1.php

<?php
   $pear_conf = new PEAR_Config;
   $clientConfig = array();
   // check proxy
   if ($http_proxy = $pear_conf->get('http_proxy')) {
       $uri = Zend_Uri_Http::fromString($http_proxy);
       if ($uri->getUsername()) $config['proxy_username'] = $uri->getUsername();
       if ($uri->getHost()) $config['proxy_host'] = $uri->getHost();
       if ($uri->getPort()) $config['proxy_port'] = $uri->getPort();

       $clientConfig = array_merge(array('adapter'=>'Zend_Http_Client_Adapter_Proxy'), $config);

   }