php實(shí)現(xiàn)多城市切換特效

2024-05-04 23:38:40

字體：大中小

供稿：網(wǎng)友

本文給大家主要分享的是在PHP中如何獲取用戶IP地址、PHP根據(jù)IP判斷用戶所在城市以及PHP根據(jù)IP實(shí)現(xiàn)城市切換或跳轉(zhuǎn)的問題。

我們先來看下個(gè)人常用的代碼

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,'玄武區(qū)')!==false){

$city = "玄武區(qū)";

}

else if(strpos($city,'仙林')!==false){

$city = "仙林";

}

else if(strpos($city,'秦淮區(qū)')!==false){

$city = "秦淮區(qū)";

}

else if(strpos($city,'江寧')!==false){

$city = "江寧";

}

else if(strpos($city,'鼓樓')!==false){

$city = "鼓樓";

}

else{

$city = "棲霞";

}

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>城市切換</title>

</head>

<BODY>

<DIV class=selCity id=allCity style="DISPLAY: none">

<DIV class=area>

<TABLE>

<TBODY>

<TR>

<TD><A class=cur href="show.html">玄武區(qū)</A></TD>

<TD><A href="show1.html">仙林</A></TD>

<TD><A href="show2.html">秦淮區(qū)</A></TD>

<TD><A href="show3.html">鼓樓</A></TD>

<TD><A href="show4.html">江寧</A></TD>

<TD><A href="show5.html">棲霞區(qū)</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">全部小區(qū)</A></LI>

<LI class=i1>

<?php

echo $city;

?>

</LI>

<LI class=i2 id=changeCity>切換城市</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>

另外附上網(wǎng)友的實(shí)現(xiàn)方法：

使用方法：解壓后QQWry.Dat就是我們想要IP地址數(shù)據(jù)庫，我們新建一個(gè)ipcity文件夾，將數(shù)據(jù)庫放在下面。QQ IP數(shù)據(jù)庫使用非常方便，數(shù)據(jù)也很齊全，你可以及時(shí)關(guān)注官方更新以保持?jǐn)?shù)據(jù)最新，強(qiáng)力推薦一下：)

接下來，我們在上面的ipcity目錄下新建一個(gè)ipaddress.php文件，直接復(fù)制以下代碼進(jìn)去即可，重要的地方也作了相應(yīng)注釋。B段：

<?

/*

函數(shù)名稱：ipCity

參數(shù)說明：$userip——用戶IP地址

函數(shù)功能：PHP通過IP地址判斷用戶所在城市

author:lee

contact:xpsem2010@gmail.com

*/

function ipCity($userip) {

//IP數(shù)據(jù)庫路徑，這里用的是QQ IP數(shù)據(jù)庫 20110405 純真版

$dat_path = 'QQWry.dat';

//判斷IP地址是否有效

if(!ereg("^([0-9]{1,3}.){3}[0-9]{1,3}$", $userip)){

return 'IP Address Invalid';

}

//打開IP數(shù)據(jù)庫

if(!$fd = @fopen($dat_path, 'rb')){

return 'IP data file not exists or access denied';

}

//explode函數(shù)分解IP地址，運(yùn)算得出整數(shù)形結(jié)果

$userip = explode('.', $userip);

$useripNum = $userip[0] * 16777216 + $userip[1] * 65536 + $userip[2] * 256 + $userip[3];

//獲取IP地址索引開始和結(jié)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;

//使用二分查找法從索引記錄中搜索匹配的IP地址記錄

while($userip1num>$useripNum || $userip2num<$useripNum) {

$Middle= intval(($EndNum + $BeginNum) / 2);

//偏移指針到索引位置讀取4個(gè)字節(jié)

fseek($fd, $useripbegin + 7 * $Middle);

$useripData1 = fread($fd, 4);

if(strlen($useripData1) < 4) {

fclose($fd);

return 'File Error';

}

//提取出來的數(shù)據(jù)轉(zhuǎn)換成長整形，如果數(shù)據(jù)是負(fù)數(shù)則加上2的32次冪

$userip1num = implode('', unpack('L', $useripData1));

if($userip1num < 0) $userip1num += pow(2, 32);

//提取的長整型數(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($userip1num > $useripNum) {

$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 '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地址對應(yīng)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地址對應(yīng)的城市結(jié)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根據(jù)IP地址實(shí)現(xiàn)城市切換或跳轉(zhuǎn)

到這里，其實(shí)問題已經(jīng)很簡單了，用簡單的js就通通搞定。C段如下：

//根據(jù)IP地址跳轉(zhuǎn)指定頁面js取得城市

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

//根據(jù)IP地址所有城市跳轉(zhuǎn)到指定頁面

if(city.indexOf("上海市")>=0){

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

}

將開頭的A段代碼和上面的C段代碼分別放在B段代碼的頭和尾，然后我們在需要跳轉(zhuǎn)的頁面加入以下代碼：

刷新頁面，是不是達(dá)到預(yù)想的效果了呢?

以上就是PHP獲取IP地址、PHP根據(jù)IP地址判斷城市以及PHP根據(jù)IP地址實(shí)現(xiàn)城市切換或跳轉(zhuǎn)的詳細(xì)介紹了，事實(shí)上，像PHP中通過IP地址自動(dòng)切換城市就是這個(gè)方法的典型應(yīng)用。舉一反三，我們通過這種方法，也可以實(shí)現(xiàn)屏蔽指定IP地址或城市的用戶訪問，自己研究一下吧，也挺簡單的：)

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