Web application question

Code:

Here's a quick function to establish a connection to a web server that will time out if the connection is lost after a user definable amount of time or if the server can't be reached.

Also supports Basic authentication if a username/password is specified. Any improvements or criticisms, please email me! :-)

Returns either a resource ID, an error code or 0 if the server can't be reached at all. Returns -1 in the event that something really wierd happens like a non-standard http response or something. Hope it helps someone.

Cheers,

Ben Blazely

function connectToURL($addr, $port, $path, $user="", $pass="", $timeout="30")
{
       $urlHandle = fsockopen($addr, $port, $errno, $errstr, $timeout);

       if ($urlHandle)
      {
               socket_set_timeout($urlHandle, $timeout);

              if ($path)
               {
                      $urlString = "GET $path HTTP/1.0\r\nHost: $addr\r\nConnection: Keep-Alive\r\nUser-Agent: MyURLGrabber\r\n";
                      if ($user)
                               $urlString .= "Authorization: Basic ".base64_encode("$user:$pass")."\r\n";
                      $urlString .= "\r\n";

                     fputs($urlHandle, $urlString);

                       $response = fgets($urlHandle);

                       if (substr_count($response, "200 OK") > 0)      // Check the status of the link
                       {
                              $endHeader = false;                     // Strip initial header information
                               while ( !$endHeader)
                              {
                                       if (fgets($urlHandle) == "\r\n")
                                              $endHeader = true;
                              }

                               return $urlHandle;                     // All OK, return the file handle
                       }
                      else if (strlen($response) < 15)                // Cope with wierd non standard responses
                       {
                              fclose($urlHandle);
                             return -1;
                       }
                      else                                            // Cope with a standard error response
                       {
                              fclose($urlHandle);
                               return substr($response,9,3);
                       }
              }

               return $urlHandle;
       }
      else
               return 0;
}

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