PHP implements extracting root domain name through URL-PHP Tutorial-php.cn

This article shares with you what I encountered when I was working on a project. I need to use PHP to extract the root domain name from the URL and the implementation ideas. Friends in need can refer to

PHP Extract the root domain name based on the URL. I use it in my personal work. Since many codes on the Internet cannot get the correct results, I wrote one myself. Everyone is welcome to use it and report bugs.

domain;echo "\n"; echo getBaseDomain('http://51.ca/index.php')->domain;echo "\n"; echo getBaseDomain('http://blog.ab.cc.win.aisa.hk/index.php')->domain;echo "\n"; function getBaseDomain($url=''){ if(!$url){ return $url; } #列举域名中固定元素 $state_domain = array( 'al','dz','af','ar','ae','aw','om','az','eg','et','ie','ee','ad','ao','ai','ag','at','au','mo','bb','pg','bs','pk','py','ps','bh','pa','br','by','bm','bg','mp','bj','be','is','pr','ba','pl','bo','bz','bw','bt','bf','bi','bv','kp','gq','dk','de','tl','tp','tg','dm','do','ru','ec','er','fr','fo','pf','gf','tf','va','ph','fj','fi','cv','fk','gm','cg','cd','co','cr','gg','gd','gl','ge','cu','gp','gu','gy','kz','ht','kr','nl','an','hm','hn','ki','dj','kg','gn','gw','ca','gh','ga','kh','cz','zw','cm','qa','ky','km','ci','kw','cc','hr','ke','ck','lv','ls','la','lb','lt','lr','ly','li','re','lu','rw','ro','mg','im','mv','mt','mw','my','ml','mk','mh','mq','yt','mu','mr','us','um','as','vi','mn','ms','bd','pe','fm','mm','md','ma','mc','mz','mx','nr','np','ni','ne','ng','nu','no','nf','na','za','aq','gs','eu','pw','pn','pt','jp','se','ch','sv','ws','yu','sl','sn','cy','sc','sa','cx','st','sh','kn','lc','sm','pm','vc','lk','sk','si','sj','sz','sd','sr','sb','so','tj','tw','th','tz','to','tc','tt','tn','tv','tr','tm','tk','wf','vu','gt','ve','bn','ug','ua','uy','uz','es','eh','gr','hk','sg','nc','nz','hu','sy','jm','am','ac','ye','iq','ir','il','it','in','id','uk','vg','io','jo','vn','zm','je','td','gi','cl','cf','cn','yr','com','arpa','edu','gov','int','mil','net','org','biz','info','pro','name','museum','coop','aero','xxx','idv','me','mobi','asia','ax','bl','bq','cat','cw','gb','jobs','mf','rs','su','sx','tel','travel' ); if(!preg_match("/^http/is", $url)){ $url="http://".$url; } $res = null; $res->domain = null; $res->host = null; $url_parse = parse_url(strtolower($url)); $urlarr = explode(".", $url_parse['host']); $count = count($urlarr); if($count <= 2){ #当域名直接根形式不存在host部分直接输出 $res->domain = $url_parse['host']; }elseif($count > 2){ $last = array_pop($urlarr); $last_1 = array_pop($urlarr); $last_2 = array_pop($urlarr); $res->domain = $last_1.'.'.$last; $res->host = $last_2; if(in_array($last, $state_domain)){ $res->domain=$last_1.'.'.$last; $res->host=implode('.', $urlarr); } if(in_array($last_1, $state_domain)){ $res->domain = $last_2.'.'.$last_1.'.'.$last; $res->host = implode('.', $urlarr); } #print_r(get_defined_vars());die; } return $res; }

Copy after login

The above is the entire content of this article. I hope it will be helpful to everyone's study. For more related content, please pay attention to the PHP Chinese website!

Related recommendations:

How to programmatically implement PHP to append content to a txt file

About PHP Usage of template engine Smarty’s built-in functions section and sectionelse

The above is the detailed content of PHP implements extracting root domain name through URL. For more information, please follow other related articles on the PHP Chinese website!