php实现多城市切换特效

2024-05-04 23:38:40

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本文给大家主要分享的是在PHP中如何获取用户IP地址、PHP根据IP判断用户所在城市以及PHP根据IP实现城市切换或跳转的问题。

我们先来看下个人常用的代码

PHP

<?php

include_once('./qqwry.php');

$QQWry=new QQWry;

function get_real_ip(){

$ip=false;

if(!emptyempty($_SERVER["HTTP_CLIENT_IP"])){

$ip = $_SERVER["HTTP_CLIENT_IP"];

}

if (!emptyempty($_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×ÏÈ¼ì²âÊÇ·ñ»ñµÃÁË GET ´«µÝµÄÊý¾Ý

setcookie("cookie_city",$_GET['chengshi'],time()+3600*24);

$city = $_GET['chengshi'];

}

else if (isset($_COOKIE["cookie_city"])) { //¼ì²âÊÇ·ñ´æÔÚêÇ³ÆCookie

$city = $_COOKIE["cookie_city"]; //ÏÔÊ¾Cookie±£´æµÄÊý¾Ý

}

else {

setcookie("cookie_city",$city,time()+3600*24); //´¿³õÊ¼»¯´Ë±äÁ¿

$_COOKIE["cookie_city"] = $city;

}

?>

HTML

<!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:xpsem2010@gmail.com

*/

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：

//根据IP地址跳转指定页面js取得城市

var city='<?echo ipCity($xp_UserIp);?>';

//根据IP地址所有城市跳转到指定页面

if(city.indexOf("上海市")>=0){

window.location.href="http://shanghai.demo.com/";

}