title: Get domain name expiration date via PHP
body: <p>Here is my current code:</p>
  
  <pre><code>function get_cmd ()
  {
      if (file_exists('/usr/local/bin/whois'))
          $cmd = '/usr/local/bin/whois';
      elseif (file_exists('/usr/bin/whois'))
          $cmd = '/usr/bin/whois';
      elseif (file_exists('/bin/whois'))
          $cmd = '/bin/whois';
      else
          die('whois shell command does not exist');
  
      return $cmd;
  }
  
  function get_whois ($cmd, $domain) 
  {
      if (checkdnsrr($domain))
          $result = shell_exec(escapeshellcmd($cmd ." ". $domain));
      else
          $result = 'DOMAIN IS NOT REGISTERED';
  
      return $result;
  }
  
  $cmd = get_cmd();
  echo get_whois($cmd, 'google.com');
  </code></pre>
  
  <p>now, is there a different method that will easily allow me to extract the expiration date of the domain without having to come up with a whole bunch of different regex? since the information will be formatted differently for every domain...</p>