[Xenon]

it's that part:

PHP Code:

      $bbcodes=$DB_site->query("SELECT bbcodetag,bbcodereplacement,twoparams FROM bbcode");

      while($bbregex=$DB_site->fetch_array($bbcodes)) {
        if ($bbregex[twoparams]) {
          $regex=sprintf($doubleRegex, $bbregex[bbcodetag], $bbregex[bbcodetag]);
        } else {
          $regex=sprintf($singleRegex, $bbregex[bbcodetag], $bbregex[bbcodetag]);
        }
        $searcharray[] = $regex;
        $replacearray[] = $bbregex[bbcodereplacement];
        // and get nested ones:
        $searcharray[] = $regex;
        $replacearray[] = $bbregex[bbcodereplacement];
        $searcharray[] = $regex;
        $replacearray[] = $bbregex[bbcodereplacement];
      } 


and shortly after that the whole array parser:

PHP Code:

$bbcode=preg_replace($searcharray, $replacearray, $bbcode);