如果找到子域，则从 url 字符串中删除子域
我有一个这样的域数组:
I have an array of domains like this:
domain.com
second.com
www.third.com
www.fourth.fifth.com
sixth.com
seventh.eigth.com
我想要的是一个只返回主机的函数.没有子域.
what I want is a function to return me the host only. Without subdomain.
这段代码是我到目前为止获取主机名的代码:
This code is what i have so far for getting the hostname:
$parse = parse_url($url);
$domain = $parse['host'];
但这仅返回:
domain.com
second.com
third.com
fourth.fifth.com
sixth.com
seventh.eigth.com
不过我需要这个输出:
domain.com
second.com
third.com
fifth.com
sixth.com
eigth.com
推荐答案
function giveHost($host_with_subdomain) {
$array = explode(".", $host_with_subdomain);
return (array_key_exists(count($array) - 2, $array) ? $array[count($array) - 2] : "").".".$array[count($array) - 1];
}
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