function remote_file ($site_url,$refer,$tmp_name,$target_directory)
{
$timeout=20;
$user_agent = "User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $site_url);
curl_setopt($ch, CURLOPT_REFERER, $refer);
curl_setopt($ch, CURLOPT_USERAGENT, $user_agent);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_NOBODY, 1);
$tmp_result = curl_exec($ch);
curl_close($ch);
save_html($target_directory,$tmp_name,$tmp_result);
if($tmp_result){return true;}
else{return false;}
}

function save_html($path,$page,$html)
{
    $file = fopen( $path.$page, "w");
   fwrite( $file, $html);
   fclose( $file );
   chmod ( $path.$page, 0777);
}