php 类似腾讯的IP库
$IpLocation = new IpLocation('ipData/QQWry.Dat');
$ipInfo=$IpLocation->getlocation($ip);
print_r($ipInfo);
注意获取的数据编码为 gbk
class IpLocation { /** * QQWry.Dat文件指针 * @var resource */ var $fp; /** * 第一条IP记录的偏移地址 * @var int */ var $firstip; /** * 最后一条IP记录的偏移地址 * @var int */ var $lastip; /** * IP记录的总条数(不包含版本信息记录) * @var int */ var $totalip; /** * 返回读取的长整型数 * @access private * @return int */ function getlong() { $result = unpack('Vlong', fread($this->fp, 4)); //将读取的little-endian编码的4个字节转化为长整型数 return $result['long']; } /** * 返回读取的3个字节的长整型数 * @access private * @return int */ function getlong3() { $result = unpack('Vlong', fread($this->fp, 3).chr(0)); //将读取的little-endian编码的3个字节转化为长整型数 return $result['long']; } /** * 返回压缩后可进行比较的IP地址 * @access private * @param string $ip * @return string */ function packip($ip) { // 将IP地址转化为长整型数,如果在PHP5中,IP地址错误,则返回False, // 这时intval将Flase转化为整数-1,之后压缩成big-endian编码的字符串 return pack('N', intval(ip2long($ip))); //intaval 获取变量的整数值 } /** * 返回读取的字符串 * @access private * @param string $data * @return string */ function getstring($data = "") { $char = fread($this->fp, 1); while (ord($char) > 0) // 字符串按照C格式保存,以\0结束 ord()得到字符的ASCII码 { $data .= $char; // 将读取的字符连接到给定字符串之后 $char = fread($this->fp, 1); } return $data; } /** * 返回地区信息 * @access private * @return string */ function getarea() { $byte = fread($this->fp, 1); // 标志字节 switch (ord($byte)) { case 0: // 没有区域信息 $area = ""; break; case 1: case 2: // 标志字节为1或2,表示区域信息被重定向 fseek($this->fp, $this->getlong3()); $area = $this->getstring(); break; default: // 否则,表示区域信息没有被重定向 $area = $this->getstring($byte); break; } return $area; } /** * 根据所给 IP 地址或域名返回所在地区信息 * @access public * @param string $ip * @return array */ function getlocation($ip = '') { if (!$this->fp) return null; // 如果数据文件没有被正确打开,则直接返回空 if($ip == '') $ip = $this->clientIp(); $location['ip'] = gethostbyname($ip); // 将输入的域名转化为IP地址 $ip = $this->packip($location['ip']); // 将输入的IP地址转化为可比较的IP地址 $l = 0; // 搜索的下边界 $u = $this->totalip; // 搜索的上边界 $findip = $this->lastip; // 如果没有找到就返回最后一条IP记录(QQWry.Dat的版本信息) while ($l fp, $this->firstip + $i * 7); $beginip = strrev(fread($this->fp, 4)); // 获取中间记录的开始IP地址 if ($ip fp, $this->getlong3()); $endip = strrev(fread($this->fp, 4)); // 获取中间记录的结束IP地址 if ($ip > $endip) // 用户的IP大于中间记录的结束IP地址时 { $l = $i + 1; // 将搜索的下边界修改为中间记录加一 } else // 用户的IP在中间记录的IP范围内时 { $findip = $this->firstip + $i * 7; break; // 则表示找到结果,退出循环 } } } /* 获取查找到的IP地理位置信息 */ fseek($this->fp, $findip); $location['beginip'] = long2ip($this->getlong()); // 用户IP所在范围的开始地址 $offset = $this->getlong3(); fseek($this->fp, $offset); $location['endip'] = long2ip($this->getlong()); // 用户IP所在范围的结束地址 $byte = fread($this->fp, 1); // 标志字节 switch (ord($byte)) { case 1: // 标志字节为1,表示国家和区域信息都被同时重定向 $countryOffset = $this->getlong3(); // 重定向地址 fseek($this->fp, $countryOffset); $byte = fread($this->fp, 1); // 标志字节 switch (ord($byte)) { case 2: // 标志字节为2,表示国家信息又被重定向 fseek($this->fp, $this->getlong3()); $location['country'] = $this->getstring(); fseek($this->fp, $countryOffset + 4); $location['area'] = $this->getarea(); break; default: // 否则,表示国家信息没有被重定向 $location['country'] = $this->getstring($byte); $location['area'] = $this->getarea(); break; } break; case 2: // 标志字节为2,表示国家信息被重定向 fseek($this->fp, $this->getlong3()); $location['country'] = $this->getstring(); fseek($this->fp, $offset + 8); $location['area'] = $this->getarea(); break; default: // 否则,表示国家信息没有被重定向 $location['country'] = $this->getstring($byte); $location['area'] = $this->getarea(); break; } if ($location['country'] == " CZ88.NET") // CZ88.NET表示没有有效信息 { $location['country'] = "未知"; } if ($location['area'] == " CZ88.NET") { $location['area'] = ""; } return $location; } /** * 获取客户端IP地址 * */ function clientIp(){ if(getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'), 'unknown')) { $onlineip = getenv('HTTP_CLIENT_IP'); } elseif(getenv('HTTP_X_FORWARDED_FOR') && strcasecmp(getenv('HTTP_X_FORWARDED_FOR'), 'unknown')) { $onlineip = getenv('HTTP_X_FORWARDED_FOR'); } elseif(getenv('REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'), 'unknown')) { $onlineip = getenv('REMOTE_ADDR'); } elseif(isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], 'unknown')) { $onlineip = $_SERVER['REMOTE_ADDR']; } preg_match("/[\d\.]{7,15}/", $onlineip, $onlineipmatches); $onlineip = $onlineipmatches[0] ? $onlineipmatches[0] : 'unknown'; unset($onlineipmatches); return $onlineip; } /** * 构造函数,打开 QQWry.Dat 文件并初始化类中的信息 * @param string $filename * @return IpLocation */ function IpLocation($filename = "") { if(!$filename) $filename = dirname(__FILE__) . '/QQWry.Dat'; if(!file_exists($filename)) exit('qqwry.dat is not exists!'); if (($this->fp = @fopen($filename, 'rb')) !== false) { $this->firstip = $this->getlong(); $this->lastip = $this->getlong(); $this->totalip = ($this->lastip - $this->firstip) / 7; register_shutdown_function(array(&$this, '_IpLocation')); } } /** * 析构函数,用于在页面执行结束后自动关闭打开的文件。 */ function _IpLocation() { fclose($this->fp); } }

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