【php开源代码栏目提醒】:网学会员在php开源代码频道为大家收集整理了IpLocation.class.php提供大家参考,希望对大家有所帮助!
<?php
// +----------------------------------------------------------------------
// | Think
PHP // +----------------------------------------------------------------------
// | Copyright (c) 2008 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
// $Id$
/**
+------------------------------------------------------------------------------
* IP 鍦扮悊浣嶇疆鏌ヨ绫?淇敼鑷?CoolCode.CN
+------------------------------------------------------------------------------
* @category ORG
* @package ORG
* @subpackage Net
* @author liu21st <liu21st@gmail.com>
* @version $Id$
+------------------------------------------------------------------------------
*/
class IpLocation extends Base
{
/**
* QQWry.Dat鏂囦欢鎸囬拡
*
* @var resource
*/
private $fp;
/**
* 绗竴鏉P璁板綍鐨勫亸绉诲湴鍧
*
* @var int
*/
private $firstip;
/**
* 鏈鍚庝竴鏉P璁板綍鐨勫亸绉诲湴鍧
*
* @var int
*/
private $lastip;
/**
* IP璁板綍鐨勬绘潯鏁帮紙涓嶅寘鍚増鏈俊鎭褰曪級
*
* @var int
*/
private $totalip;
/**
* 鏋勯犲嚱鏁帮紝鎵撳紑 QQWry.Dat 鏂囦欢骞跺垵濮嬪寲绫讳腑鐨勪俊鎭?
*
* @param string $filename
* @return IpLocation
*/
public function __construct($filename = "UTFWry.dat") {
$this->fp = 0;
if (($this->fp = fopen(dirname(__FILE__).'/'.$filename, 'rb')) !== false) {
$this->firstip = $this->getlong();
$this->lastip = $this->getlong();
$this->totalip = ($this->lastip - $this->firstip) / 7;
}
}
/**
* 杩斿洖璇诲彇鐨勯暱鏁村瀷鏁?
*
* @access private
* @return int
*/
private function getlong() {
//灏嗚鍙栫殑little-endian缂栫爜鐨?涓瓧鑺傝浆鍖栦负闀挎暣鍨嬫暟
$result = unpack('Vlong', fread($this->fp, 4));
return $result['long'];
}
/**
* 杩斿洖璇诲彇鐨?涓瓧鑺傜殑闀挎暣鍨嬫暟
*
* @access private
* @return int
*/
private function getlong3() {
//灏嗚鍙栫殑little-endian缂栫爜鐨?涓瓧鑺傝浆鍖栦负闀挎暣鍨嬫暟
$result = unpack('Vlong', fread($this->fp, 3).chr(0));
return $result['long'];
}
/**
* 杩斿洖鍘嬬缉鍚庡彲杩涜姣旇緝鐨処P鍦板潃
*
* @access private
* @param string $ip
* @return string
*/
private function packip($ip) {
// 灏咺P鍦板潃杞寲涓洪暱鏁村瀷鏁帮紝濡傛灉鍦≒HP5涓紝IP鍦板潃閿欒锛屽垯杩斿洖False锛?
// 杩欐椂intval灏咶lase杞寲涓烘暣鏁?1锛屼箣鍚庡帇缂╂垚big-endian缂栫爜鐨勫瓧绗︿覆
return pack('N', intval(ip2long($ip)));
}
/**
* 杩斿洖璇诲彇鐨勫瓧绗︿覆
*
* @access private
* @param string $data
* @return string
*/
private function getstring($data = "") {
$char = fread($this->fp, 1);
while (ord($char) > 0) { // 瀛楃涓叉寜鐓鏍煎紡淇濆瓨锛屼互\0缁撴潫
$data .= $char; // 灏嗚鍙栫殑瀛楃杩炴帴鍒扮粰瀹氬瓧绗︿覆涔嬪悗
$char = fread($this->fp, 1);
}
return $data;
}
/**
* 杩斿洖鍦板尯淇℃伅
*
* @access private
* @return string
*/
private function getarea() {
$byte = fread($this->fp, 1); // 鏍囧織瀛楄妭
switch (ord($byte)) {
case 0: // 娌℃湁鍖哄煙淇℃伅
$area = "";
break;
case 1:
case 2: // 鏍囧織瀛楄妭涓?鎴?锛岃〃绀哄尯鍩熶俊鎭閲嶅畾鍚?
fseek($this->fp, $this->getlong3());
$area = $this->getstring();
break;
default: // 鍚﹀垯锛岃〃绀哄尯鍩熶俊鎭病鏈夎閲嶅畾鍚?
$area = $this->getstring($byte);
break;
}
return $area;
}
/**
* 鏍规嵁鎵缁?IP 鍦板潃鎴栧煙鍚嶈繑鍥炴墍鍦ㄥ湴鍖轰俊鎭?
*
* @access public
* @param string $ip
* @return array
*/
public function getlocation($ip='') {
if (!$this->fp) return null; // 濡傛灉鏁版嵁鏂囦欢娌℃湁琚纭墦寮锛屽垯鐩存帴杩斿洖绌?
if(empty($ip)) $ip = get_client_ip();
$location['ip'] = gethostbyname($ip); // 灏嗚緭鍏ョ殑鍩熷悕杞寲涓篒P鍦板潃
$ip = $this->packip($location['ip']); // 灏嗚緭鍏ョ殑IP鍦板潃杞寲涓哄彲姣旇緝鐨処P鍦板潃
// 涓嶅悎娉曠殑IP鍦板潃浼氳杞寲涓?55.255.255.255
// 瀵瑰垎鎼滅储
$l = 0; // 鎼滅储鐨勪笅杈圭晫
$u = $this->totalip; // 鎼滅储鐨勪笂杈圭晫
$findip = $this->lastip; // 濡傛灉娌℃湁鎵惧埌灏辫繑鍥炴渶鍚庝竴鏉P璁板綍锛圦QWry.Dat鐨勭増鏈俊鎭級
while ($l <= $u) { // 褰撲笂杈圭晫灏忎簬涓嬭竟鐣屾椂锛屾煡鎵惧け璐?
$i = floor(($l + $u) / 2); // 璁$畻杩戜技涓