php getmxrr failing

I assume you are NOT on windows as windows PHP doesn't have a getmxrr() function.

But I have a replacement function for windows that uses a program supplied with windows called nslookup.

I see from wikipedia that this program exists in *ix also, so can you try ...


function getmxrr($s_HostName, array &$a_MXHosts = NULL, array &$a_Weights = NULL)
      {
      // Simulate all the required network activity by executing windows' NSLOOKUP.
      $s_NSLookup = shell_exec("nslookup -q=mx {$s_HostName} 2>nul");
      preg_match_all("'^.*MX preference = (\d{1,10}), mail exchanger = (.*)$'simU", $s_NSLookup, $a_MXMatches);

      // If there is something to return ...
      if (count($a_MXMatches[2]) > 0)
            {
            // Produce output arrays if they have been requested.
            $i_ArgCount = func_num_args();
            if ($i_ArgCount > 1)
                  {
                  array_multisort($a_MXMatches[1], $a_MXMatches[2]);
                  switch ($i_ArgCount)
                        {
                        case 3 :
                              $a_Weights = $a_MXMatches[1];
                        case 2 :
                              $a_MXHosts = $a_MXMatches[2];
                        }
                  }
            return True;
            }
      else
            {
            return False;
            }
      }

You'll need to rename this function for *ix.

Ideally, assuming nslookup is found correctly, this should work. I don't know if you need to add .exe to the program name (I don't in windows).

If the results are different (i.e. nslookup always gets the mx records), then this could be a bug in PHP.

trim did the trick thank you hernst

Hernst24, how did you guess this?

I tried a list of domains and it work for all the domains (even the duplicates) and then I just added a whitespace to one entry which worked before (only god knows why I had that idea ;-) ) and in that case it failed.

Ha!