PHP access to user real IP, Taobao IP interface to obtain IP location

You do not need an IP library, update-free.
Taobao IP Library: http://ip.taobao.com
Thanks for the 5 floor reminder.

/**  * Get user real IP  */function GetIP () {    static $realip;     if (Isset ($_server)) {&NB Sp       if (Isset ($_server["Http_x_forwarded_for")) {            $realip = $_s erver["Http_x_forwarded_for"];        } else if (Isset ($_server["Http_client_ip")) {            $rea Lip = $_server["Http_client_ip"];        } else {            $realip = $_server["REMOTE_ADDR"];   & nbsp    }    } else {        if (getenv ("Http_x_forwarded_for")) {    &nbs P       $realip = getenv ("Http_x_forwarded_for");        } else if (getenv ("Http_client_ip")) {            $realip = Get Env ("Http_client_ip");        } else {            $realip = getenv ("Remote_ADDR ");        }     {        return $realip;    /**  * get IP   location  * Taobao IP interface  * @Return: array  */function getcity ($ip) {$url = " Http://ip.taobao.com/service/getIpInfo.php?ip= ". $ip; $ip =json_decode (file_get_contents ($url)); if ((string) $ip->code== ' 1 ') {  return false;  }   $data = (array) $ip->data; return $data; }