PHP implements extracting the root domain name through URL and phpurl extracting the domain name_PHP tutorial

PHP implements extracting the root domain name through the URL, and phpurl extracts the domain name

PHP extracts the root domain name according to the URL. It is used in personal work. Because many codes on the Internet cannot get the correct result. I wrote one myself, everyone is welcome to use it and report bugs.

<&#63;php 
#使用示例
echo getBaseDomain('http://blog.jp.goo.ne.jp/index.php')->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;
   
}

Articles you may be interested in:

• Detailed explanation of the use of PHP function http_build_query
• A problem with http_build_query in php
• php gets the complete URL address of the current page
• How to dynamically add url query parameters in php
• How to detect whether url exists in php
• How to use url to pass arrays in php
• Parsing bands in php Sharing the url function of Chinese characters
• PHP uses regular expressions to get the image url
• PHP analyzes the difference between return_url and notify_url in Alipay development
• PHP gets the current complete URL Address function
• Detailed explanation of thinkphp’s four url access methods
• PHP uses http_build_query() to construct a URL string

http://www.bkjia.com/PHPjc/1117056.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/1117056.htmlTechArticlePHP implements extraction of root domain name through URL, phpurl extracts domain name, PHP extracts root domain name according to URL, used in personal work, Since many codes on the Internet cannot get correct results, I wrote one myself...