<?php
//php獲取ip的算法
$user_IP = ($_SERVER["HTTP_VIA"]) ? $_SERVER["HTTP_X_FORWARDED_FOR"] : $_SERVER["REMOTE_ADDR"];
$user_IP = ($user_IP) ? $user_IP : $_SERVER["REMOTE_ADDR"];

//echo $user_IP;
?>

//===================================
// 功能：IP地址獲取真實(shí)地址函數(shù)
// 參數(shù)：$ip - IP地址
//===================================
function convertip($ip) {
//IP數(shù)據(jù)文件路徑
$dat_path = 'QQWry.dat';

//檢查IP地址
if(!ereg("^([0-9]{1,3}.){3}[0-9]{1,3}$", $ip)){
return 'IP Address Error';
}

//打開(kāi)IP數(shù)據(jù)文件
if(!$fd = @fopen($dat_path, 'rb')){
return 'IP date file not exists or access denied';
}

//分解IP進(jìn)行運(yùn)算，得出整形數(shù)
$ip = explode('.', $ip);
$ipNum = $ip[0] * 16777216 + $ip[1] * 65536 + $ip[2] * 256 + $ip[3];

//獲取IP數(shù)據(jù)索引開(kāi)始和結(jié)束位置
$DataBegin = fread($fd, 4);
$DataEnd = fread($fd, 4);
$ipbegin = implode('', unpack('L', $DataBegin));
if($ipbegin < 0) $ipbegin += pow(2, 32);
$ipend = implode('', unpack('L', $DataEnd));
if($ipend < 0) $ipend += pow(2, 32);
$ipAllNum = ($ipend - $ipbegin) / 7 + 1;

$BeginNum = 0;
$EndNum = $ipAllNum;

//使用二分查找法從索引記錄中搜索匹配的IP記錄
while($ip1num>$ipNum || $ip2num<$ipNum) {
$Middle= intval(($EndNum + $BeginNum) / 2);

//偏移指針到索引位置讀取4個(gè)字節(jié)
fseek($fd, $ipbegin + 7 * $Middle);
$ipData1 = fread($fd, 4);
if(strlen($ipData1) < 4) {
fclose($fd);
return 'System Error';
}
//提取出來(lái)的數(shù)據(jù)轉(zhuǎn)換成長(zhǎng)整形，如果數(shù)據(jù)是負(fù)數(shù)則加上2的32次冪
$ip1num = implode('', unpack('L', $ipData1));
if($ip1num < 0) $ip1num += pow(2, 32);

//提取的長(zhǎng)整型數(shù)大于我們IP地址則修改結(jié)束位置進(jìn)行下一次循環(huán)
if($ip1num > $ipNum) {
$EndNum = $Middle;
continue;
}

//取完上一個(gè)索引后取下一個(gè)索引
$DataSeek = fread($fd, 3);
if(strlen($DataSeek) < 3) {
fclose($fd);
return 'System Error';
}
$DataSeek = implode('', unpack('L', $DataSeek.chr(0)));
fseek($fd, $DataSeek);
$ipData2 = fread($fd, 4);
if(strlen($ipData2) < 4) {
fclose($fd);
return 'System Error';
}
$ip2num = implode('', unpack('L', $ipData2));
if($ip2num < 0) $ip2num += pow(2, 32);

//沒(méi)找到提示未知
if($ip2num < $ipNum) {
if($Middle == $BeginNum) {
fclose($fd);
return 'Unknown';
}
$BeginNum = $Middle;
}
}

//下面的代碼讀暈了，沒(méi)讀明白，有興趣的慢慢讀
$ipFlag = fread($fd, 1);
if($ipFlag == chr(1)) {
$ipSeek = fread($fd, 3);
if(strlen($ipSeek) < 3) {
fclose($fd);
return 'System Error';
}
$ipSeek = implode('', unpack('L', $ipSeek.chr(0)));
fseek($fd, $ipSeek);
$ipFlag = fread($fd, 1);
}

if($ipFlag == chr(2)) {
$AddrSeek = fread($fd, 3);
if(strlen($AddrSeek) < 3) {
fclose($fd);
return 'System Error';
}
$ipFlag = fread($fd, 1);
if($ipFlag == chr(2)) {
$AddrSeek2 = fread($fd, 3);
if(strlen($AddrSeek2) < 3) {
fclose($fd);
return 'System Error';
}
$AddrSeek2 = implode('', unpack('L', $AddrSeek2.chr(0)));
fseek($fd, $AddrSeek2);
} else {
fseek($fd, -1, SEEK_CUR);
}

while(($char = fread($fd, 1)) != chr(0))
$ipAddr2 .= $char;

$AddrSeek = implode('', unpack('L', $AddrSeek.chr(0)));
fseek($fd, $AddrSeek);

while(($char = fread($fd, 1)) != chr(0))
$ipAddr1 .= $char;
} else {
fseek($fd, -1, SEEK_CUR);
while(($char = fread($fd, 1)) != chr(0))
$ipAddr1 .= $char;

$ipFlag = fread($fd, 1);
if($ipFlag == chr(2)) {
$AddrSeek2 = fread($fd, 3);
if(strlen($AddrSeek2) < 3) {
fclose($fd);
return 'System Error';
}
$AddrSeek2 = implode('', unpack('L', $AddrSeek2.chr(0)));
fseek($fd, $AddrSeek2);
} else {
fseek($fd, -1, SEEK_CUR);
}
while(($char = fread($fd, 1)) != chr(0)){
$ipAddr2 .= $char;
}
}
fclose($fd);

//最后做相應(yīng)的替換操作后返回結(jié)果
if(preg_match('/http/i', $ipAddr2)) {
$ipAddr2 = '';
}
$ipaddr = "$ipAddr1 $ipAddr2";
$ipaddr = preg_replace('/CZ88.Net/is', '', $ipaddr);
$ipaddr = preg_replace('/^s*/is', '', $ipaddr);
$ipaddr = preg_replace('/s*$/is', '', $ipaddr);
if(preg_match('/http/i', $ipaddr) || $ipaddr == '') {
$ipaddr = 'Unknown';
}

return $ipaddr;
}
?>

var sf='';//此處的sf變量可保存PHP函數(shù)獲取到的真實(shí)地址
if(sf.indexOf("香港")>=0){
window.location.href="http://www.****.com/?香港";
}
else if(sf.indexOf("廣東省")>=0){
window.location.href="http://www.****.com/?廣東";
}