现在很多网站都有做多城市的适配,用户进入了信息港主站之后就会跳转到对应的城市分站,这对用户来说也是比较友好的,
<?php
include_once
(
'./qqwry.php'
);
$QQWry
=
new
QQWry;
function
get_real_ip(){
$ip
=false;
if
(!
empty
(
$_SERVER
[
"HTTP_CLIENT_IP"
])){
$ip
=
$_SERVER
[
"HTTP_CLIENT_IP"
];
}
if
(!
empty
(
$_SERVER
[
'HTTP_X_FORWARDED_FOR'
])) {
$ips
=
explode
(
", "
,
$_SERVER
[
'HTTP_X_FORWARDED_FOR'
]);
if
(
$ip
) {
array_unshift
(
$ips
,
$ip
);
$ip
= FALSE; }
for
(
$i
= 0;
$i
<
count
(
$ips
);
$i
++) {
if
(!
eregi
(
"^(10|172\.16|192\.168)\."
,
$ips
[
$i
])) {
$ip
=
$ips
[
$i
];
break
;
}
}
}
return
$ip
;
}
function
is_ip(
$str
) {
$ip
=
explode
(
"."
,
$str
);
if
(
count
(
$ip
)<4 ||
count
(
$ip
)>4)
return
0;
foreach
(
$ip
as
$ip_addr
) {
if
( !
is_numeric
(
$ip_addr
) )
return
0;
if
(
$ip_addr
<0 ||
$ip_addr
>255 )
return
0;
}
return
1;
}
$ip
=
$_SERVER
[
'REMOTE_ADDR'
];
$ifErr
=
$QQWry
->QQWry(
$ip
);
$city
=
$QQWry
->Country.
$QQWry
->Local;
//echo $city;*/
if
(
strpos
(
$city
,
'玄武区'
)!==false){
$city
=
"玄武区"
;
}
else
if
(
strpos
(
$city
,
'仙林'
)!==false){
$city
=
"仙林"
;
}
else
if
(
strpos
(
$city
,
'秦淮区'
)!==false){
$city
=
"秦淮区"
;
}
else
if
(
strpos
(
$city
,
'江宁'
)!==false){
$city
=
"江宁"
;
}
else
if
(
strpos
(
$city
,
'鼓楼'
)!==false){
$city
=
"鼓楼"
;
}
else
{
$city
=
"栖霞"
;
}
if
(isset(
$_GET
[
'chengshi'
])) {
//Ê×Ïȼì²âÊÇ·ñ»ñµÃÁË GET ´«µÝµÄÊý¾Ý
setcookie(
"cookie_city"
,
$_GET
[
'chengshi'
],time()+3600*24);
$city
=
$_GET
[
'chengshi'
];
}
else
if
(isset(
$_COOKIE
[
"cookie_city"
])) {
//¼ì²âÊÇ·ñ´æÔÚêdzÆCookie
$city
=
$_COOKIE
[
"cookie_city"
];
//ÏÔʾCookie±£´æµÄÊý¾Ý
}
else
{
setcookie(
"cookie_city"
,
$city
,time()+3600*24);
//´¿³õʼ»¯´Ë±äÁ¿
$_COOKIE
[
"cookie_city"
] =
$city
;
}
?>
<!DOCTYPE html>
<
html
lang
=
"zh-cn"
>
<
head
>
<
meta
charset
=
"utf-8"
/>
<
LINK
href
=
"css/css.css"
type
=
text
/css
rel
=
stylesheet
>
<
SCRIPT
src
=
"js/jquery-1.4.2.min.js"
type
=
text
/javascript></
SCRIPT
>
<
title
>城市切换</
title
>
</
head
>
<
BODY
>
<
DIV
class
=
selCity
id
=
allCity
style
=
"DISPLAY: none"
>
<
DIV
class
=
area
>
<
TABLE
>
<
TBODY
>
<
TR
>
<
TD
><
A
class
=
cur
href
=
"show.html"
>玄武区</
A
></
TD
>
<
TD
><
A
href
=
"show1.html"
>仙林</
A
></
TD
>
<
TD
><
A
href
=
"show2.html"
>秦淮区</
A
></
TD
>
<
TD
><
A
href
=
"show3.html"
>鼓楼</
A
></
TD
>
<
TD
><
A
href
=
"show4.html"
>江宁</
A
></
TD
>
<
TD
><
A
href
=
"show5.html"
>栖霞区</
A
></
TD
>
</
TR
>
</
TBODY
></
TABLE
>
<
DIV
class
=
none
><
A
id
=
foldin
href
=
"javascript:;"
>全部</
A
></
DIV
></
DIV
></
DIV
>
<
DIV
class
=
header
>
<
DIV
class
=
area
>
<
DIV
class
=
r
>
<
DIV
class
=
"topCtiy clear"
>
<
UL
>
<
LI
class
=
i1
><
A
href
=
"index.php"
>全部小区</
A
></
LI
>
<
LI
class
=
i1
>
<?
php
echo $city;
?>
</
LI
>
<
LI
class
=
i2
id
=
changeCity
>切换城市</
LI
>
</
UL
>
</
DIV
>
</
DIV
>
</
DIV
>
</
DIV
>
<
SCRIPT
type
=
text
/javascript>
jQuery(function(){
$("#changeCity").click(function(a){
$("#allCity").slideDown(300);
a.stopPropagation();
$(this).blur();
});
$("#allCity").click(function(a){
a.stopPropagation()
});
$(document).click(function(a){
a.button!=2 && $("#allCity").slideUp(300)
});
$("#foldin").click(function(){
$("#allCity").slideUp(300)
});
});
</
SCRIPT
>
</
body
>
</
html
>
另外附上网友的实现方法:
使用方法:解压后QQWry.Dat就是我们想要IP地址数据库,我们新建一个ipcity文件夹,将数据库放在下面。QQ IP数据库使用非常方便,数据也很齐全,你可以及时关注官方更新以保持数据最新,强力推荐一下:)
接下来,我们在上面的ipcity目录下新建一个ipaddress.php文件,直接复制以下代码进去即可,重要的地方也作了相应注释。B段:
<?
/*
函数名称:ipCity
参数说明:$userip——用户IP地址
函数功能:PHP通过IP地址判断用户所在城市
author:lee
contact:[email protected]
*/
function ipCity($userip) {
//IP数据库路径,这里用的是QQ IP数据库 20110405 纯真版
$dat_path = 'QQWry.dat';
//判断IP地址是否有效
if(!ereg("^([0-9]{1,3}.){3}[0-9]{1,3}$", $userip)){
return 'IP Address Invalid';
}
//打开IP数据库
if(!$fd = @fopen($dat_path, 'rb')){
return 'IP data file not exists or access denied';
}
//explode函数分解IP地址,运算得出整数形结果
$userip = explode('.', $userip);
$useripNum = $userip[0] * 16777216 + $userip[1] * 65536 + $userip[2] * 256 + $userip[3];
//获取IP地址索引开始和结束位置
$DataBegin = fread($fd, 4);
$DataEnd = fread($fd, 4);
$useripbegin = implode('', unpack('L', $DataBegin));
if($useripbegin < 0) $useripbegin += pow(2, 32);
$useripend = implode('', unpack('L', $DataEnd));
if($useripend < 0) $useripend += pow(2, 32);
$useripAllNum = ($useripend - $useripbegin) / 7 + 1;
$BeginNum = 0;
$EndNum = $useripAllNum;
//使用二分查找法从索引记录中搜索匹配的IP地址记录
while($userip1num>$useripNum || $userip2num<$useripNum) {
$Middle= intval(($EndNum + $BeginNum) / 2);
//偏移指针到索引位置读取4个字节
fseek($fd, $useripbegin + 7 * $Middle);
$useripData1 = fread($fd, 4);
if(strlen($useripData1) < 4) {
fclose($fd);
return 'File Error';
}
//提取出来的数据转换成长整形,如果数据是负数则加上2的32次幂
$userip1num = implode('', unpack('L', $useripData1));
if($userip1num < 0) $userip1num += pow(2, 32);
//提取的长整型数大于我们IP地址则修改结束位置进行下一次循环
if($userip1num > $useripNum) {
$EndNum = $Middle;
continue;
}
//取完上一个索引后取下一个索引
$DataSeek = fread($fd, 3);
if(strlen($DataSeek) < 3) {
fclose($fd);
return 'File Error';
}
$DataSeek = implode('', unpack('L', $DataSeek.chr(0)));
fseek($fd, $DataSeek);
$useripData2 = fread($fd, 4);
if(strlen($useripData2) < 4) {
fclose($fd);
return 'File Error';
}
$userip2num = implode('', unpack('L', $useripData2));
if($userip2num < 0) $userip2num += pow(2, 32);
//找不到IP地址对应城市
if($userip2num < $useripNum) {
if($Middle == $BeginNum) {
fclose($fd);
return 'No Data';
}
$BeginNum = $Middle;
}
}
$useripFlag = fread($fd, 1);
if($useripFlag == chr(1)) {
$useripSeek = fread($fd, 3);
if(strlen($useripSeek) < 3) {
fclose($fd);
return 'System Error';
}
$useripSeek = implode('', unpack('L', $useripSeek.chr(0)));
fseek($fd, $useripSeek);
$useripFlag = fread($fd, 1);
}
if($useripFlag == chr(2)) {
$AddrSeek = fread($fd, 3);
if(strlen($AddrSeek) < 3) {
fclose($fd);
return 'System Error';
}
$useripFlag = fread($fd, 1);
if($useripFlag == 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))
$useripAddr2 .= $char;
$AddrSeek = implode('', unpack('L', $AddrSeek.chr(0)));
fseek($fd, $AddrSeek);
while(($char = fread($fd, 1)) != chr(0))
$useripAddr1 .= $char;
} else {
fseek($fd, -1, SEEK_CUR);
while(($char = fread($fd, 1)) != chr(0))
$useripAddr1 .= $char;
$useripFlag = fread($fd, 1);
if($useripFlag == 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)){
$useripAddr2 .= $char;
}
}
fclose($fd);
//返回IP地址对应的城市结果
if(preg_match('/http/i', $useripAddr2)) {
$useripAddr2 = '';
}
$useripaddr = "$useripAddr1 $useripAddr2";
$useripaddr = preg_replace('/CZ88.Net/is', '', $useripaddr);
$useripaddr = preg_replace('/^s*/is', '', $useripaddr);
$useripaddr = preg_replace('/s*$/is', '', $useripaddr);
if(preg_match('/http/i', $useripaddr) || $useripaddr == '') {
$useripaddr = 'No Data';
}
return $useripaddr;
}
?>
PHP根据IP地址实现城市切换或跳转
到这里,其实问题已经很简单了,用简单的js就通通搞定。C段如下:
1 2 3 4 5 6 7 |
|
将开头的A段代码和上面的C段代码分别放在B段代码的头和尾,然后我们在需要跳转的页面加入以下代码:
<script src="/ipcity/ipaddress.php" type="text/javascript" language="javascript"></script>
刷新页面,是不是达到预想的效果了呢?
以上就是PHP获取IP地址、PHP根据IP地址判断城市以及PHP根据IP地址实现城市切换或跳转的详细介绍了,事实上,像PHP中通过IP地址自动切换城市就是这个方法的典型应用。举一反三,我们通过这种方法,也可以实现屏蔽指定IP地址或城市的用户访问,自己研究一下吧,也挺简单的:)
标签:city,fread,return,ip,跳转,fd,IP地址,php From: https://www.cnblogs.com/yeci/p/17574656.html