如何用php检查dns txt记录？

I create a function to compare a txt record...

but only in my home this not work... At my job this work...

Any tip?

Obs:

• The TXT record is created 48 hours left

• I Already clear/flush my dns cache!

  _checkTxtRecord("iocheck","imob.io","123456");  
  
  function _checkTxtRecord($txt_recort,$domain,$compare)
  {
      if(checkdnsrr("$txt_recort.$domain","TXT"))
      {
          $result = dns_get_record("$txt_recort.$domain",DNS_TXT);
  
          if(isset($result[0]["txt"]) && $result[0]["txt"]==$compare)
          {
              return true;
          }
  
      }
      return false;
  }