我們先來看下個人常用的代碼
PHP
<?phpinclude_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,'玄武區')!==false){ $city = "玄武區";}else if(strpos($city,'仙林')!==false){ $city = "仙林";}else if(strpos($city,'秦淮區')!==false){ $city = "秦淮區";}else if(strpos($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×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;} ?>
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><p class=selCity id=allCity style="DISPLAY: none"><p class=area><TABLE> <TBODY> <TR> <TD><A class=cur href="show.html">玄武區</A></TD> <TD><A href="show1.html">仙林</A></TD> <TD><A href="show2.html">秦淮區</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</A></TD> </TR> </TBODY></TABLE><p class=none><A id=foldin href="javascript:;">全部</A></p></p></p><p class=header> <p class=area> <p class=r> <p class="topCtiy clear"> <UL> <LI class=i1><A href="index.php">全部小區</A></LI> <LI class=i1> <?php echo $city; ?> </LI> <LI class=i2 id=changeCity>切換城市</LI> </UL> </p> </p> </p></p><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(){ $("#allCity").slideUp(300) });});</SCRIPT></body></html>
另外附上網友的實現方法：
使用方法：解壓後QQWry.Dat就是我們想要IP地址資料庫，我們建立一個ipcity檔案夾，將資料庫放在下面。QQ IP資料庫使用非常方便，資料也很齊全，你可以及時關注官方更新以保持資料最新，強力推薦一下：）
接下來，我們在上面的ipcity目錄下建立一個ipaddress.php檔案，直接複製以下代碼進去即可，重要的地方也作了相應注釋。B段：
<?/*函數名稱：ipCity參數說明：$userip——使用者IP地址函數功能：PHP通過IP地址判斷使用者所在城市author:leecontact:xpsem2010@gmail.com*/function ipCity($userip) { //IP資料庫路徑，這裡用的是QQ IP資料庫 20110405 純真版 $dat_path = 'QQWry.dat'; //判斷IP地址是否有效 if(!ereg("^([0-9]{1,3}.){3}[0-9]{1,3}$", $userip)){ return 'IP Address Invalid'; } //開啟IP資料庫 if(!$fd = @fopen($dat_path, 'rb')){ return 'IP data file not exists or access denied'; } //explode函數分解IP地址，運算得出整數形結果 $userip = explode('.', $userip); $useripNum = $userip[0] * 16777216 + $userip[1] * 65536 + $userip[2] * 256 + $userip[3]; //擷取IP地址索引開始和結束位置 $DataBegin = fread($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 = $useripAllNum; //使用二分尋找法從索引記錄中搜尋匹配的IP地址記錄 while($userip1num>$useripNum || $userip2num<$useripNum) { $Middle= intval(($EndNum + $BeginNum) / 2); //位移指標到索引位置讀取4個位元組 fseek($fd, $useripbegin + 7 * $Middle); $useripData1 = fread($fd, 4); if(strlen($useripData1) < 4) { fclose($fd); return 'File Error'; } //提取出來的資料轉換成長整形，如果資料是負數則加上2的32次冪 $userip1num = implode('', unpack('L', $useripData1)); if($userip1num < 0) $userip1num += pow(2, 32); //提取的長整型數大於我們IP地址則修改結束位置進行下一次迴圈 if($userip1num > $useripNum) { $EndNum = $Middle; continue; } //取完上一個索引後取下一個索引 $DataSeek = fread($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地址對應的城市結果 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 $useripaddr;}?>
PHP根據IP地址實現城市切換或跳轉
到這裡，其實問題已經很簡單了，用簡單的js就通通搞定。C段如下：
//根據IP地址跳轉指定頁面js取得城市var city='<?echo ipCity($xp_UserIp);?>';//根據IP地址所有城市跳轉到指定頁面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，然後我們在需要跳轉的頁面加入以下代碼：
<script src="/ipcity/ipaddress.php" type="text/javascript" language="javascript"></script>
重新整理頁面，是不是達到預想的效果了呢？
總結：以上就是本篇文的全部內容，希望能對大家的學習有所協助。
相關推薦：
PHP實現基於DOMDocument解析和產生xml的方法詳解
PHP實現基於XMLWriter操作xml的方法
PHP基於物件導向mysqli擴充庫增刪改查操作工具類的方法
Start building with 50+ products and up to 12 months usage for Elastic Compute Service
1 on 1 presale consultation
24/7 Technical Support 6 Free Tickets per Quarter Faster Response
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.
A comprehensive suite of global cloud computing services to power your business
Payment Methods We Support
