显示IP真实地址
/* * $Id: ipLocation.class.php v0.0.1 2008-11-4 Linvo $ * $author: www.phperz.com * Copyright(C) 2008 */ class ipLocation { var $fp; var $firstip; //第一条ip索引的偏移地址 var $lastip; //最后一条ip索引的偏移地址 var $totalip; //总ip数 //* //构造函数,初始化一些变量 //$datfile 的值为纯真IP数据库的名子,可自行修改. //* function ipLocation($datfile = 'IPdb.Dat') { $this->fp = fopen($datfile,'rb'); //二制方式打开 $this->firstip = $this->get4b(); //第一条ip索引的绝对偏移地址 $this->lastip = $this->get4b(); //最后一条ip索引的绝对偏移地址 $this->totalip = ($this->lastip - $this->firstip)/7 ; //ip总数 索引区是定长的7个字节,在此要除以7, register_shutdown_function(array($this,'closefp')); //为了兼容php5以下版本,本类没有用析构函数,自动关闭ip库. } //* //关闭ip库 //* function closefp() { fclose($this->fp); } //* //读取4个字节并将解压成long的长模式 //* function get4b() { $str = unpack('V', fread($this->fp, 4)); return $str[1]; } //* //读取重定向了的偏移地址 //* function getoffset() { $str = unpack('V', fread($this->fp, 3).chr(0)); return $str[1]; } //* //读取ip的详细地址信息 //* function getstr() { $split = fread($this->fp, 1); while(ord($split) != 0) { $str .= $split; $split = fread($this->fp,1); } return $str; } //* //将ip通过ip2long转成ipv4的互联网地址,再将他压缩成big-endian字节序 //用来和索引区内的ip地址做比较 //* function iptoint($ip) { return pack('N', intval(ip2long($ip))); } //* //获取地址信息 //* function readaddress() { $now_offset = ftell($this->fp); //得到当前的指针位址 $flag = $this->getflag(); switch(ord($flag)) { case 0: $address = ''; break; case 1: case 2: fseek($this->fp, $this->getoffset()); $address = $this->getstr(); break; default: fseek($this->fp, $now_offset); $address = $this->getstr(); break; } return $address; } //* //获取标志1或2 //用来确定地址是否重定向了. //* function getflag() { return fread($this->fp, 1); } //* //用二分查找法在索引区内搜索ip //* function searchip($ip) { $ip = gethostbyname($ip); //将域名转成ip $ip_offset['ip'] = $ip; $ip = $this->iptoint($ip); //将ip转换成长整型 $firstip = 0; //搜索的上边界 $lastip = $this->totalip; //搜索的下边界 $ipoffset = $this->lastip; //初始化为最后一条ip地址的偏移地址 while($firstip <= $lastip) { $i = floor(($firstip + $lastip) / 2); //计算近似中间记录 floor函数记算给定浮点数小的最大整数,说白了就是四舍五也舍 fseek($this->fp, $this->firstip + $i * 7); //定位指针到中间记录 $startip = strrev(fread($this->fp, 4)); //读取当前索引区内的开始ip地址,并将其little-endian的字节序转换成big-endian的字节序 php程序员站 if($ip < $startip) { $lastip = $i - 1; }else{ fseek($this->fp, $this->getoffset()); $endip = strrev(fread($this->fp, 4)); if ($ip > $endip){ $firstip = $i + 1; }else{ $ip_offset['offset'] = $this->firstip + $i * 7; break; } } } return $ip_offset; } //* //获取ip地址详细信息 //* function getaddress($ip) { $ip_offset = $this->searchip($ip); //获取ip 在索引区内的绝对编移地址 $ipoffset = $ip_offset['offset']; $address['ip'] = $ip_offset['ip']; fseek($this->fp, $ipoffset); //定位到索引区 $address['startip'] = long2ip($this->get4b()); //索引区内的开始ip 地址 $address_offset = $this->getoffset(); //获取索引区内ip在ip记录区内的偏移地址 fseek($this->fp, $address_offset); //定位到记录区内 $address['endip'] = long2ip($this->get4b()); //记录区内的结束ip 地址 $flag = $this->getflag(); //读取标志字节 switch(ord($flag)) { case 1: //地区1地区2都重定向 $address_offset = $this->getoffset(); //读取重定向地址 fseek($this->fp, $address_offset); //定位指针到重定向的地址 $flag = $this->getflag(); //读取标志字节 switch(ord($flag)) { case 2: //地区1又一次重定向, fseek($this->fp, $this->getoffset()); $address['area1'] = $this->getstr(); fseek($this->fp, $address_offset+4); //跳4个字节 $address['area2'] = $this->readaddress(); //地区2有可能重定向,有可能没有 break; default: //地区1,地区2都没有重定向 fseek($this->fp, $address_offset); //定位指针到重定向的地址 $address['area1'] = $this->getstr(); $address['area2'] = $this->readaddress(); break; } break; case 2: //地区1重定向 地区2没有重定向 $address1_offset = $this->getoffset(); //读取重定向地址 fseek($this->fp, $address1_offset); $address['area1'] = $this->getstr(); fseek($this->fp, $address_offset+8); $address['area2'] = $this->readaddress(); break; default: //地区1地区2都没有重定向 fseek($this->fp, $address_offset+4); $address['area1'] = $this->getstr(); $address['area2'] = $this->readaddress(); break; } //*过滤一些无用数据 if(strpos($address['area1'], 'CZ88.NET') != false) $address['area1'] = '未知'; if(strpos($address['area2'], 'CZ88.NET') != false) $address['area2'] = ' '; return $address; } } 调用测试文件:test.php PHP代码 header("content-type:text/html;charset=utf-8"); include 'ipLocation.class.php'; //载入类 $ip_1 = '218.198.33.3'; $ip_2 = '127.0.0.1'; $myobj =new ipLocation(); $address = $myobj->getaddress($ip_1); echo iconv('gb2312','utf-8',$address['area1'].' '.$address['area2']).'<br />'; //输出:河南省郑州市 郑州大学升达经贸管理学院 $address = $myobj->getaddress($ip_2); echo iconv('gb2312','utf-8',$address['area1'].' '.$address['area2']).'<br />'; //输出:本机地址
转自http://blog.csdn.net/linvo/article/details/3893485
- /*
- * $Id: ipLocation.class.php v0.0.1 2008-11-4 Linvo $
- * $author: www.phperz.com
- * Copyright(C) 2008
- */
- class ipLocation {
- var $fp;
- var $firstip; //第一条ip索引的偏移地址
- var $lastip; //最后一条ip索引的偏移地址
- var $totalip; //总ip数
- //*
- //构造函数,初始化一些变量
- //$datfile 的值为纯真IP数据库的名子,可自行修改.
- //*
- function ipLocation($datfile = 'IPdb.Dat')
- {
- $this->fp = fopen($datfile,'rb'); //二制方式打开
- $this->firstip = $this->get4b(); //第一条ip索引的绝对偏移地址
- $this->lastip = $this->get4b(); //最后一条ip索引的绝对偏移地址
- $this->totalip = ($this->lastip - $this->firstip)/7 ; //ip总数 索引区是定长的7个字节,在此要除以7,
- register_shutdown_function(array($this,'closefp')); //为了兼容php5以下版本,本类没有用析构函数,自动关闭ip库.
- }
- //*
- //关闭ip库
- //*
- function closefp()
- {
- fclose($this->fp);
- }
- //*
- //读取4个字节并将解压成long的长模式
- //*
- function get4b()
- {
- $str = unpack('V', fread($this->fp, 4));
- return $str[1];
- }
- //*
- //读取重定向了的偏移地址
- //*
- function getoffset()
- {
- $str = unpack('V', fread($this->fp, 3).chr(0));
- return $str[1];
- }
- //*
- //读取ip的详细地址信息
- //*
- function getstr()
- {
- $split = fread($this->fp, 1);
- while(ord($split) != 0)
- {
- $str .= $split;
- $split = fread($this->fp,1);
- }
- return $str;
- }
- //*
- //将ip通过ip2long转成ipv4的互联网地址,再将他压缩成big-endian字节序
- //用来和索引区内的ip地址做比较
- //*
- function iptoint($ip)
- {
- return pack('N', intval(ip2long($ip)));
- }
- //*
- //获取地址信息
- //*
- function readaddress()
- {
- $now_offset = ftell($this->fp); //得到当前的指针位址
- $flag = $this->getflag();
- switch(ord($flag))
- {
- case 0:
- $address = '';
- break;
- case 1:
- case 2:
- fseek($this->fp, $this->getoffset());
- $address = $this->getstr();
- break;
- default:
- fseek($this->fp, $now_offset);
- $address = $this->getstr();
- break;
- }
- return $address;
- }
- //*
- //获取标志1或2
- //用来确定地址是否重定向了.
- //*
- function getflag()
- {
- return fread($this->fp, 1);
- }
- //*
- //用二分查找法在索引区内搜索ip
- //*
- function searchip($ip)
- {
- $ip = gethostbyname($ip); //将域名转成ip
- $ip_offset['ip'] = $ip;
- $ip = $this->iptoint($ip); //将ip转换成长整型
- $firstip = 0; //搜索的上边界
- $lastip = $this->totalip; //搜索的下边界
- $ipoffset = $this->lastip; //初始化为最后一条ip地址的偏移地址
- while($firstip <= $lastip)
- {
- $i = floor(($firstip + $lastip) / 2); //计算近似中间记录 floor函数记算给定浮点数小的最大整数,说白了就是四舍五也舍
- fseek($this->fp, $this->firstip + $i * 7); //定位指针到中间记录
- $startip = strrev(fread($this->fp, 4)); //读取当前索引区内的开始ip地址,并将其little-endian的字节序转换成big-endian的字节序 php程序员站
- if($ip < $startip)
- {
- $lastip = $i - 1;
- }else{
- fseek($this->fp, $this->getoffset());
- $endip = strrev(fread($this->fp, 4));
- if ($ip > $endip){
- $firstip = $i + 1;
- }else{
- $ip_offset['offset'] = $this->firstip + $i * 7;
- break;
- }
- }
- }
- return $ip_offset;
- }
- //*
- //获取ip地址详细信息
- //*
- function getaddress($ip)
- {
- $ip_offset = $this->searchip($ip); //获取ip 在索引区内的绝对编移地址
- $ipoffset = $ip_offset['offset'];
- $address['ip'] = $ip_offset['ip'];
- fseek($this->fp, $ipoffset); //定位到索引区
- $address['startip'] = long2ip($this->get4b()); //索引区内的开始ip 地址
- $address_offset = $this->getoffset(); //获取索引区内ip在ip记录区内的偏移地址
- fseek($this->fp, $address_offset); //定位到记录区内
- $address['endip'] = long2ip($this->get4b()); //记录区内的结束ip 地址
- $flag = $this->getflag(); //读取标志字节
- switch(ord($flag))
- {
- case 1: //地区1地区2都重定向
- $address_offset = $this->getoffset(); //读取重定向地址
- fseek($this->fp, $address_offset); //定位指针到重定向的地址
- $flag = $this->getflag(); //读取标志字节
- switch(ord($flag))
- {
- case 2: //地区1又一次重定向,
- fseek($this->fp, $this->getoffset());
- $address['area1'] = $this->getstr();
- fseek($this->fp, $address_offset+4); //跳4个字节
- $address['area2'] = $this->readaddress(); //地区2有可能重定向,有可能没有
- break;
- default: //地区1,地区2都没有重定向
- fseek($this->fp, $address_offset); //定位指针到重定向的地址
- $address['area1'] = $this->getstr();
- $address['area2'] = $this->readaddress();
- break;
- }
- break;
- case 2: //地区1重定向 地区2没有重定向
- $address1_offset = $this->getoffset(); //读取重定向地址
- fseek($this->fp, $address1_offset);
- $address['area1'] = $this->getstr();
- fseek($this->fp, $address_offset+8);
- $address['area2'] = $this->readaddress();
- break;
- default: //地区1地区2都没有重定向
- fseek($this->fp, $address_offset+4);
- $address['area1'] = $this->getstr();
- $address['area2'] = $this->readaddress();
- break;
- }
- //*过滤一些无用数据
- if(strpos($address['area1'], 'CZ88.NET') != false) $address['area1'] = '未知';
- if(strpos($address['area2'], 'CZ88.NET') != false) $address['area2'] = ' ';
- return $address;
- }
- }
- 调用测试文件:test.php
- PHP代码
- header("content-type:text/html;charset=utf-8");
- include 'ipLocation.class.php'; //载入类
- $ip_1 = '218.198.33.3';
- $ip_2 = '127.0.0.1';
- $myobj =new ipLocation();
- $address = $myobj->getaddress($ip_1);
- echo iconv('gb2312','utf-8',$address['area1'].' '.$address['area2']).'<br />';
- //输出:河南省郑州市 郑州大学升达经贸管理学院
- $address = $myobj->getaddress($ip_2);
- echo iconv('gb2312','utf-8',$address['area1'].' '.$address['area2']).'<br />';
- //输出:本机地址
posted on 2012-05-28 16:51 kudosharry 阅读(324) 评论(0) 编辑 收藏 举报