Getting page with fopen

Hello! I'm trying to find out on which rank my side is at google automatically. I'm trying the following code, but I get a strange error: $Url = "http://www.google.de/search?q=MySearchWord"; // Gives "Warning: No error on line [where fopen is]" $Url = "http://www.google.de/"; // Works for ($i = 0; $i < 100; $i += 10) { $fp = fopen($Url, "r"); while($fp && !feof($fp)) { $sLine .= fgets($fp, 4096); } ... do some further things with $sLine fclose($fp); } How can I get more information about the error occuring? "Warning: No error" is not much information... Martin