PHP obtains the corresponding region of the IP and the network type used

See
http://www.oschina.net/code/snippet_106370_5983
This article was tested because the ip168 website was banned, so I tried to modify the original code to use the data call of the ip138 database.

//There is a problem with the original program, now it is modified to ip138 database
 /**
 * Get IP region
 * Enter description here ...
 * @param unknown_type $ip
*/
 function GetArea($ip){

 $url = "http://www. ip138.com/ips8.asp?ip=".$ip."&action=2";
 $contents = file_get_contents($url);
 preg_match_all('|
Main data of this site: .*|',$contents,$rsR);
 $rsR[0][0] = str_replace("
Main data of this site:", "", $rsR[0][0]);
 $pos = strpos($rsR[0][0],'
 $Area = substr_replace($rsR[0][0],'',$pos);
 return $Area;
 }
 header('Content-type:text/html;Charset=gb2312');
 $area = GetArea('218.242.232.194');
 print_r($area);
?>