由于很多人有一些需求在做国内站的时候，不做国内某个地区的业务的时候，他想屏蔽用户访问网站，我这边以dedecms搜索功能为例子，因为是以前开发的，时间比较有限现在，不重新调整做整站的功能，如果有需要，可以将以下相关代码放入一个php文件，然后在data/common.ini.php里面包含就可以了。
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目前网络上有很多资源，例如著名的珊瑚虫ip数据库，但是其文件在本地，得定时更新。我们现在使用淘宝ip数据库，通过json返回的数据来解析ip是否某地区，下面以"上海市"为例：
首页找到dedecms底下plus下的search.php文件，查找以下代码
if($cfg_notallowstr !='' && preg_match("#".$cfg_notallowstr."#i",$keyword))
{
ShowMsg("你的搜索关键字中存在非法内容，被系统禁止！","-1");
exit();
}
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在上面加入
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function get_ip_data(){
$ip=file_get_contents("http://ip.taobao.com/service/getIpInfo.php?ip=".get_client_ip());
$ip = json_decode($ip);
if($ip->code){
return false;
}
$data = (array) $ip->data;
if($data['city']=='上海市' && !isCrawler()){
// exit('http://www.dede58.com');
return true;
/* header("location:".getenv("HTTP_REFERER")); // 返回其调用页面 */
}
}
function isCrawler() {
$spiderSite= array(
"TencentTraveler","Baiduspider+","BaiduGame","Googlebot","msnbot","Sosospider+","Sogou web spider","ia_archiver","Yahoo! Slurp","YoudaoBot","Yahoo Slurp","MSNBot","Java (Often spam bot)","BaiDuSpider","Voila","Yandex bot","BSpider","twiceler","Sogou Spider","Speedy Spider","Google AdSense","Heritrix","Python-urllib","Alexa (IA Archiver)","Ask","Exabot","Custo","OutfoxBot/YodaoBot","yacy","SurveyBot","legs","lwp-trivial","Nutch","StackRambler","The web archive (IA Archiver)","Perl tool","MJ12bot","Netcraft","MSIECrawler","WGet tools","larbin","Fish search",);
if(in_array(strtolower($_SERVER['HTTP_USER_AGENT']),$spiderSite)){
return true;
}else{
return false;
}
}
//获取客户端ip
function get_client_ip()
{
if (isset($_SERVER)){
if (isset($_SERVER["HTTP_X_FORWARDED_FOR"])){
$realip = $_SERVER["HTTP_X_FORWARDED_FOR"];
} else if (isset($_SERVER["HTTP_CLIENT_IP"])) {
$realip = $_SERVER["HTTP_CLIENT_IP"];
} else {
$realip = $_SERVER["REMOTE_ADDR"];
}
} else {
if (getenv("HTTP_X_FORWARDED_FOR")){
$realip = getenv("HTTP_X_FORWARDED_FOR");
} else if (getenv("HTTP_CLIENT_IP")) {
$realip = getenv("HTTP_CLIENT_IP");
} else {
$realip = getenv("REMOTE_ADDR");
}
}
return $realip;
}
if(get_ip_data())
{
ShowMsg("你的IP被禁止！","-1");
exit();
}
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保存文件后，你让上海市的朋友访问，系统就会提示"你的IP被禁止！"的提示?