怎么根据ip获得运营商的信息
如何根据ip获得运营商的信息
不只限国内运营商，应该有一些国外公司提供类似的web服务，有做过的朋友给推荐几个，谢谢啦
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何谓“运营商”
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查IP就可以获取了
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首先你需要一个IP地址库或者是IP查询接口
早年的珊瑚虫QQ你用过吧？ 里面使用的纯真数据库，有某个IP段对应某个省市运营商的信息，纯真团队现在还是在维护中的。
另外你也可以用线上一些公开的IP查询接口
例如新浪就有免费提供的公开IP查询接口，良心企业...
function sina($ip)
{
$str = file_get_contents("http://int.dpool.sina.com.cn/iplookup/iplookup.php?ip=".$ip);
return $str;
}
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