grab page with polipo and tor

grab.php

<?php

function grab_page($url, $data=array())
{
    $agent = 'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1';
    $referer = "http://www.bing.com";
    $url = str_replace(' ', '%20', $url);
    $curl = curl_init($url);
    curl_setopt($curl, CURLOPT_HEADER, 0);
    curl_setopt($curl, CURLOPT_VERBOSE, 0);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($curl, CURLOPT_TIMEOUT, 10); 
    curl_setopt($curl, CURLOPT_PROXY, "http://127.0.0.1:8123/");
    curl_setopt($curl, CURLOPT_USERAGENT, $agent);
    curl_setopt($curl, CURLOPT_REFERER, $referer);
    
    if (count($data)>0){
    	curl_setopt($curl, CURLOPT_POST, 1); 
    	curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
    }
    
    $output = curl_exec($curl);
    
    if (curl_errno($curl))
    {
      trigger_error('CURL error: "' . curl_error($curl) . '"', E_USER_WARNING);
      $output = false;
    }
    curl_close($curl);
    return $output;
}
  
  
  
  
function tor_new_identity($tor_ip='127.0.0.1', $control_port='9051', $auth_code='')
{
    $fp = fsockopen($tor_ip, $control_port, $errno, $errstr, 30);
    if (!$fp) return false; //can't connect to the control port
    
    fputs($fp, "AUTHENTICATE $auth_code\r\n");
    $response = fread($fp, 1024);
    list($code, $text) = explode(' ', $response, 2);
    if ($code != '250') return false; //authentication failed
    
    //send the request to for new identity
    fputs($fp, "signal NEWNYM\r\n");
    $response = fread($fp, 1024);
    list($code, $text) = explode(' ', $response, 2);
    if ($code != '250') return false; //signal failed
    
    fclose($fp);
    return true;
}