Username in post hack.

Is it possible to change this so that more than one word can show up as the username of the person viewing it, for example both (username) and [username] ??

PHP Code:

$findwords=array(0 => '[username]');
  $replacewords=array(0 => "$bbuserinfo[username]");
  $i=1;
  while ($var=$DB_site->fetch_array($vars) and $i++) {
    if ($var['findword']!='') {
      $findwords[$i]=$var['findword'];
      $replacewords[$i]=$var['replaceword'];
    }
  } 

[Xenon]

PHP Code:

$findwords=array(0 => '[username]', 1 =>'(username)');
  $replacewords=array(0 => "$bbuserinfo[username]", 1 => "$bbuserinfo[username]");
  $i=1;
  while ($var=$DB_site->fetch_array($vars) and $i++) {
    if ($var['findword']!='') {
      $findwords[$i]=$var['findword'];
      $replacewords[$i]=$var['replaceword'];
    }
  }