diff --git a/ip/17monipdb.dat b/ip/17monipdb.dat
new file mode 100644
index 0000000..c586055
Binary files /dev/null and b/ip/17monipdb.dat differ
diff --git a/ip/IP.class.php b/ip/IP.class.php
new file mode 100644
index 0000000..e1ba44e
--- /dev/null
+++ b/ip/IP.class.php
@@ -0,0 +1,109 @@
+<?php
+
+/*
+    全球 IPv4 地址归属地数据库(17MON.CN 版)
+    高春辉(pAUL gAO) <gaochunhui@gmail.com>
+    Build 20141009 版权所有 17MON.CN
+    (C) 2006 - 2014 保留所有权利
+    请注意及时更新 IP 数据库版本
+    数据问题请加 QQ 群: 346280296
+    Code for PHP 5.3+ only
+*/
+
+class IP
+{
+    private static $ip     = NULL;
+
+    private static $fp     = NULL;
+    private static $offset = NULL;
+    private static $index  = NULL;
+
+    private static $cached = array();
+
+    public static function find($ip)
+    {
+        if (empty($ip) === TRUE)
+        {
+            return 'N/A';
+        }
+
+        $nip   = gethostbyname($ip);
+        $ipdot = explode('.', $nip);
+
+        if ($ipdot[0] < 0 || $ipdot[0] > 255 || count($ipdot) !== 4)
+        {
+            return 'N/A';
+        }
+
+        if (isset(self::$cached[$nip]) === TRUE)
+        {
+            return self::$cached[$nip];
+        }
+
+        if (self::$fp === NULL)
+        {
+            self::init();
+        }
+
+        $nip2 = pack('N', ip2long($nip));
+
+        $tmp_offset = (int)$ipdot[0] * 4;
+        $start      = unpack('Vlen', self::$index[$tmp_offset] . self::$index[$tmp_offset + 1] . self::$index[$tmp_offset + 2] . self::$index[$tmp_offset + 3]);
+
+        $index_offset = $index_length = NULL;
+        $max_comp_len = self::$offset['len'] - 1024 - 4;
+        for ($start = $start['len'] * 8 + 1024; $start < $max_comp_len; $start += 8)
+        {
+            if (self::$index{$start} . self::$index{$start + 1} . self::$index{$start + 2} . self::$index{$start + 3} >= $nip2)
+            {
+                $index_offset = unpack('Vlen', self::$index{$start + 4} . self::$index{$start + 5} . self::$index{$start + 6} . "\x0");
+                $index_length = unpack('Clen', self::$index{$start + 7});
+
+                break;
+            }
+        }
+
+        if ($index_offset === NULL)
+        {
+            return 'N/A';
+        }
+
+        fseek(self::$fp, self::$offset['len'] + $index_offset['len'] - 1024);
+
+        self::$cached[$nip] = explode("\t", fread(self::$fp, $index_length['len']));
+
+        return self::$cached[$nip];
+    }
+
+    private static function init()
+    {
+        if (self::$fp === NULL)
+        {
+            self::$ip = new self();
+
+            self::$fp = fopen(__DIR__ . '/17monipdb.dat', 'rb');
+            if (self::$fp === FALSE)
+            {
+                throw new Exception('Invalid 17monipdb.dat file!');
+            }
+
+            self::$offset = unpack('Nlen', fread(self::$fp, 4));
+            if (self::$offset['len'] < 4)
+            {
+                throw new Exception('Invalid 17monipdb.dat file!');
+            }
+
+            self::$index = fread(self::$fp, self::$offset['len'] - 4);
+        }
+    }
+
+    public function __destruct()
+    {
+        if (self::$fp !== NULL)
+        {
+            fclose(self::$fp);
+        }
+    }
+}
+
+?>
\ No newline at end of file
diff --git a/ip/dbip-client.class.php b/ip/dbip-client.class.php
new file mode 100644
index 0000000..27b3f53
--- /dev/null
+++ b/ip/dbip-client.class.php
@@ -0,0 +1,83 @@
+<?php
+
+/**
+ *
+ * DB-IP.com API client class
+ *
+ * Copyright (C) 2012 db-ip.com
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+class DBIP_Client_Exception extends Exception {
+
+}
+
+class DBIP_Client {
+
+	private $base_url = "http://api.db-ip.com/";
+	private $api_key;
+
+	public function __construct($api_key, $base_url = null) {
+		
+		$this->api_key = $api_key;
+
+		if (isset($base_url)) {
+			$this->base_url = $base_url;
+		}
+
+	}
+
+	protected function Do_API_Call($method, $params = array()) {
+
+		$qp = array("api_key=" . $this->api_key);
+		foreach ($params as $k => $v) {
+			$qp[] = $k . "=" . urlencode($v);
+		}
+		
+		$url = $this->base_url . $method . "?" . implode("&", $qp);
+
+		if (!$jdata = @file_get_contents($url)) {
+			throw new DBIP_Client_Exception("{$method}: unable to fetch URL: {$url}");
+		}
+
+		if (!$data = @json_decode($jdata)) {
+			throw new DBIP_Client_Exception("{$method}: error decoding server response");
+		}
+
+		if (property_exists($data, 'error') && $data->error) {
+			throw new DBIP_Client_Exception("{$method}: server reported an error: {$data->error}");
+		}
+
+		return $data;
+	
+	}
+	
+	public function Get_Address_Info($addr) {
+		
+		return $this->Do_API_Call("addrinfo", array("addr" => $addr));
+		
+	}
+
+	public function Get_Key_Info() {
+
+		return $this->Do_API_Call("keyinfo");
+	
+	}
+
+}
+
+?>
diff --git a/ip/example.php b/ip/example.php
new file mode 100755
index 0000000..bcb2c49
--- /dev/null
+++ b/ip/example.php
@@ -0,0 +1,31 @@
+#!/usr/local/bin/php
+<?php
+
+$api_key = "INSERT_YOUR_OWN_API_KEY_HERE";
+
+require "dbip-client.class.php";
+
+$ip_addr = $argv[1]
+or die("usage: {$argv[0]} <ip_address>\n");
+
+try {
+
+	$dbip = new DBIP_Client($api_key);
+
+	echo "keyinfo:\n";
+	foreach ($dbip->Get_Key_Info() as $k => $v) {
+		echo "{$k}: {$v}\n";
+	}
+
+	echo "\naddrinfo:\n";
+	foreach ($dbip->Get_Address_Info($ip_addr) as $k => $v) {
+		echo "{$k}: {$v}\n";
+	}
+
+} catch (Exception $e) {
+
+	die("error: {$e->getMessage()}\n");
+
+}
+
+?>
diff --git a/ip/index.php b/ip/index.php
new file mode 100644
index 0000000..89cecc2
--- /dev/null
+++ b/ip/index.php
@@ -0,0 +1,43 @@
+<?php
+    require "dbip-client.class.php";
+    require "IP.class.php";
+
+    $api_key = "YOUR_DB_IP_KEY(https://db-ip.com/api/)";
+    if (isset($_POST['geo']))
+    {
+        $ip_addr = $_POST['geo'];
+    }
+    else
+    {
+        $ip_addr = null;
+    }
+    $ip=$_SERVER['REMOTE_ADDR'];
+
+    if (empty($ip_addr)) {
+        echo $ip;
+    } else {
+        $dbip = new DBIP_Client($api_key);
+        foreach ($dbip->Get_Address_Info($ip_addr) as $k => $v) {
+#            echo "$k:$v,";
+            if ($k=="country" && $v=="CN") {
+                $finds = IP::find($ip_addr);
+                $result = "";
+                foreach ($finds as $res) {
+                    if (!empty($res)) {
+                        if ($result!=$res)
+                            $result = empty($result)?$res:"$result,"."$res";
+                    }
+                }
+                echo $result;
+                break;
+            }
+            if ($k=="address") {
+                echo "";
+            } else if ($k=="city") {
+                echo "$v";
+            } else {
+                echo "$v,";
+            }
+        }
+    }
+?>
diff --git a/ip/index2.php b/ip/index2.php
new file mode 100644
index 0000000..a9edddd
--- /dev/null
+++ b/ip/index2.php
@@ -0,0 +1,7 @@
+<?php
+    $api_key = "YOUR_DB_IP_KEY(https://db-ip.com/api/)";
+    require "dbip-client.class.php";
+
+    $ip=$_SERVER["REMOTE_ADDR"];
+    echo $ip;
+?>