google ping 实现函数

function googleping ($blogname, $webaddress, $urladdress, $rssaddress, $categoryname) {
       $url='http://blogsearch.google.com/ping/RPC2';

       $trackback_url=parse_url($url);

       $out="POST /ping/RPC2 HTTP/1.0\r\n";

       $out.="Host: blogsearch.google.com\r\n";
  
       $out.="Content-Type: text/xml\r\n";


       $query_string="<?xml version=\"1.0\"?>\r\n<methodCall>\r\n<methodName>weblogUpdates.extendedPing</methodName>\r\n<params>\r\n<param>\r\n<value>{$blogname}</value>\r\n</param>\r\n<param>\r\n<value>{$webaddress}</value>\r\n</param>\r\n<param>\r\n<value>{$urladdress}</value>\r\n</param>\r\n<param>\r\n<value>{$rssaddress}</value>\r\n</param>\r\n<param>\r\n<value>{$categoryname}</value>\r\n</param>\r\n</params>\r\n</methodCall>";


       $out.='Content-Length: '.strlen($query_string)."\r\n";

       $out.="User-Agent: <a href='blog.51cto.com'>blog.51cto.com\r\n\r\n</a>";

       $out.=$query_string;
  
       $trackback_url['port']=80;
  
       $fs=fsockopen($trackback_url['host'], $trackback_url['port'], $errno, $errstr, 10);
  
       if (!$fs) return false;

       fputs($fs, $out);

       $http_response = '';

       while(!feof($fs)) {

        $http_response .= fgets($fs, 128);

       }

       @fclose($fs);

       echo $http_response;

       return true;

      }