Description:
------------
On modern FreeBSD, res_nsearch() does not directly set a value for h_errno, but rather, the last h_errno value is stored as res_h_errno within the handle (statp->res_h_errno). Thus, in ext/standard/dns.c, within the definition for dns_get_record, the switch case at https://github.com/php/php-src/blob/master/ext/standard/dns.c#L981 doesn't properly categorize or catch error conditions for a particular query. Namely, instead of properly continuing to try the next record for NO_DATA or HOST_NOT_FOUND responses, the function completely fails and returns false. In my (limited) testing of this issue on Ubuntu, h_errno always equaled statp->res_h_errno, so I don't believe this fix needs to be OS dependent. 

This bug was originally reported in php 5.5.26, and is confirmed to affect 7.3.32, 7.4.25 and 8.0.12, on FreeBSD 12.2-RELEASE on amd64. See: https://bugs.php.net/bug.php?id=70027 

Test script:
---------------
php -r "var_dump(dns_get_record('www.google.com', DNS_A + DNS_CNAME));"

Expected result:
----------------
There is no CNAME record for www.google.com, so we'd only see a result for the A record.

array(1) {
  [0]=>
  array(5) {
    ["host"]=>
    string(14) "www.google.com"
    ["class"]=>
    string(2) "IN"
    ["ttl"]=>
    int(66)
    ["type"]=>
    string(1) "A"
    ["ip"]=>
    string(12) "142.251.45.4"
  }
}


Actual result:
--------------
Warning: dns_get_record(): DNS Query failed in Command line code on line 1
bool(false)