怎么在PHP中根據(jù)URL提取根域名？相信很多沒有經(jīng)驗(yàn)的人對(duì)此束手無(wú)策，為此本文總結(jié)了問題出現(xiàn)的原因和解決方法，通過(guò)這篇文章希望你能解決這個(gè)問題。

創(chuàng)新互聯(lián)主要從事網(wǎng)頁(yè)設(shè)計(jì)、PC網(wǎng)站建設(shè)（電腦版網(wǎng)站建設(shè)）、wap網(wǎng)站建設(shè)（手機(jī)版網(wǎng)站建設(shè)）、響應(yīng)式網(wǎng)站、程序開發(fā)、網(wǎng)站優(yōu)化、微網(wǎng)站、成都小程序開發(fā)等，憑借多年來(lái)在互聯(lián)網(wǎng)的打拼，我們?cè)诨ヂ?lián)網(wǎng)網(wǎng)站建設(shè)行業(yè)積累了豐富的網(wǎng)站設(shè)計(jì)制作、成都做網(wǎng)站、網(wǎng)站設(shè)計(jì)、網(wǎng)絡(luò)營(yíng)銷經(jīng)驗(yàn)，集策劃、開發(fā)、設(shè)計(jì)、營(yíng)銷、管理等多方位專業(yè)化運(yùn)作于一體。

<?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;
  }
  #列舉域名中固定元素
  $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){
    #當(dāng)域名直接根形式不存在host部分直接輸出
    $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;
   
}

看完上述內(nèi)容，你們掌握怎么在PHP中根據(jù)URL提取根域名的方法了嗎？如果還想學(xué)到更多技能或想了解更多相關(guān)內(nèi)容，歡迎關(guān)注創(chuàng)新互聯(lián)行業(yè)資訊頻道，感謝各位的閱讀！

本文標(biāo)題：怎么在PHP中根據(jù)URL提取根域名-創(chuàng)新互聯(lián)
網(wǎng)頁(yè)URL：http://www.rwnh.cn/article44/djpiee.html

成都網(wǎng)站建設(shè)公司_創(chuàng)新互聯(lián)，為您提供靜態(tài)網(wǎng)站、品牌網(wǎng)站建設(shè)、網(wǎng)站制作、網(wǎng)站內(nèi)鏈、服務(wù)器托管、網(wǎng)站設(shè)計(jì)公司

廣告

聲明：本網(wǎng)站發(fā)布的內(nèi)容（圖片、視頻和文字）以用戶投稿、用戶轉(zhuǎn)載內(nèi)容為主，如果涉及侵權(quán)請(qǐng)盡快告知，我們將會(huì)在第一時(shí)間刪除。文章觀點(diǎn)不代表本網(wǎng)站立場(chǎng)，如需處理請(qǐng)聯(lián)系客服。電話：028-86922220；郵箱：631063699@qq.com。內(nèi)容未經(jīng)允許不得轉(zhuǎn)載，或轉(zhuǎn)載時(shí)需注明來(lái)源： 創(chuàng)新互聯(lián)