Description:
------------
Issue 1 :- Expected behaviour :- Should return string as value field for TXT 
                                 records 
           Current Behaviour :-   Array returned as value for TXT records 

Issue 2 :- Expected behaviour :- Names of nameservers should be unique and 
                                 should be returning both IPV4 and IPV6 values 
           Current Behaviour :- Names of nameservers repeated several times and 
                                no IPV4 or IPV6 values returned 

Issue 3 :- For Facebook.com dns_get_record () returns the following SOA records multiple times which are not shown by Google Dig tool ( https://toolbox.googleapps.com/apps/dig ) / nslookup on windows :- 

 BODIS.com  IN  984  SOA  ns1.BODIS.com  dnsadmin.BODIS.com  2017062202  10800  3600  1209600  3600  
      

Test script:
---------------
<?php 
 $dns_result =  dns_get_record ( "facebook.com" , DNS_ALL , $authns , $addtnl )  ; 
try { 
foreach ( $dns_result as $dns_result_key => $dns_result_value )
{ $rec = $dns_result_value ; 
foreach ( $rec as $key => $value)
{	echo "$value &nbsp" ; 
}
echo "<br>" ; 
} 
foreach ( $authns as $key_authns => $value_authns )
{	foreach ( $value_authns as $key_value_authns => $value_value_authns )
	{		echo "$value_value_authns &nbsp" ; 
	
	}
echo "<br>" ;
}
} 
 
catch ( Exception $e ) 
{ 
  echo "$e->getMessage()" ; 
}  
?>