$inbox = imap_open($hostname,$username,$password,NULL,1) or die('Cannot connect to Gmail: ' . print_r(imap_errors()));
$emails = imap_search($inbox,'ALL');
if($emails) {
     $output = '';
     rsort($emails);
     foreach($emails as $email_number) {
          $message = imap_fetchbody($inbox,$email_number,1);
          $output.= $message;
     }
     echo $output . "\n";
}