php怎麼設定後台某IP段可以登陸？

 

代碼如下

複製代碼

public function login() {         //設定IP段登入         if(getenv("HTTP_CLIENT_IP")) {             $onlineip = getenv('HTTP_CLIENT_IP');                  }                  elseif(getenv('HTTP_X_FORWARDED_FOR')){                          $onlineip = getenv('HTTP_X_FORWARDED_FOR');                  }                  elseif(getenv('REMOTE_ADDR')){                          $onlineip = getenv('REMOTE_ADDR');                  }                  else{                          $onlineip = $HTTP_SERVER_VARS['REMOTE_ADDR'];                  } //                 echo $onlineip;                  $adminip = $onlineip;                  $arrayip = array('117.121.48.*','127.0.0.*');//ip段                  $ipregexp = implode('|', str_replace( array('*','.'), array('d+','.') ,$arrayip) );                  $allow = preg_match("/^(".$ipregexp.")$/", $adminip);                          if ($allow != 1) {                          showmessage(L('你的ip地址不在被允許的範圍內！'),'?m=admin&c=index&a=login',6000);                  }

把下面代碼放到你的網站後台登入入口調用，然後再把m=admin&c=index&a=login改成你的地址就可以了。