Get Domain from distinguished Name

function get-domfqdn ($fqdn)
 {
 $afqdn= $fqdn.split(",")
 $first = 0
 $Dom=""
 foreach ($pfqdn in $afqdn)
  {
  If ($pfqdn.contains("DC=") -eq $true)
   {
   If ($first -eq 1)
    {
           $Dom = $Dom+"."
    }
   $first = 1
   $Dom = $Dom+$pfqdn.replace("DC=","")
   }
  }
 return $dom
 }

function get-domfqdn ($fqdn)  {  $afqdn= $fqdn.split(",")  $first = 0  $Dom=""  foreach ($pfqdn in $afqdn)   {   If ($pfqdn.contains("DC=") -eq $true)    {    If ($first -eq 1)     {            $Dom = $Dom+"."     }    $first = 1    $Dom = $Dom+$pfqdn.replace("DC=","")    }   }  return $dom  }