PHP根据url获取顶级域名
composer require 'agile/domain:~1.0' 或者在composer.json文件中添加 "require": { "agile/domain": "~1.0" }
use Agile\Lib\Domain\Domain; public function index(Domain $domain) { $host = $domain->getDomain('http://www.huanguosoft.com'); var_dump($host); }