PHP and Weaving dream Preg_match get top-level domains

Weaving Dreams

{dede:geturl runphp='yes'}  $url$_SERVER['HTTP_HOST'];preg_match("#[\w-]+\.(com|net|org|gov|cc|biz|info|cn|co)(\.(cn|hk|uk))*#"$url$match);@me =  $match[0];{/dede:geturl}

Php

    
     $url = $_SERVER['HTTP_HOST'];preg_match("#[\w-]+\.(com|net|org|gov|cc|biz|info|cn|co)(\.(cn|hk|uk))*#", $url, $match);echo$match[0];?>

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