[PHP] BBcodes probleem

$inhoud = preg_replace("/\\[quote\](.*?)\\[\/quote\]/is", "hier-je-quote-start-HTML $1 hier-je-quote-einde-HTML", $inhoud);

function bbcode_array_pop(&$stack) {
   $arrSize = count($stack);
   $x = 1;
   while(list($key, $val) = each($stack)) {
      if($x < count($stack)) {
     $tmpArr[] = $val;
      }
      else {
     $return_val = $val;
      }
      $x++;
   }
   $stack = $tmpArr;
   return($return_val);
}


function bbcode_array_push(&$stack, $value) {
   $stack[] = $value;
   return(sizeof($stack));
}

function bbencode_quote($message)
{
    // First things first: If there aren't any "[quote]" strings in the message, we don't
    // need to process it at all.

    if (!strpos(strtolower($message), "[quote]"))
    {
        return $message;
    }

    $stack = Array();
    $curr_pos = 1;
    while ($curr_pos && ($curr_pos < strlen($message)))
    {
        $curr_pos = strpos($message, "[", $curr_pos);

        // If not found, $curr_pos will be 0, and the loop will end.
        if ($curr_pos)
        {
            // We found a [. It starts at $curr_pos.
            // check if it's a starting or ending quote tag.
            $possible_start = substr($message, $curr_pos, 7);
            $possible_end = substr($message, $curr_pos, 8);
            if (strcasecmp("[quote]", $possible_start) == 0)
            {
                // We have a starting quote tag.
                // Push its position on to the stack, and then keep going to the right.
                bbcode_array_push($stack, $curr_pos);
                ++$curr_pos;
            }
            else if (strcasecmp("[/quote]", $possible_end) == 0)
            {
                // We have an ending quote tag.
                // Check if we've already found a matching starting tag.
                if (sizeof($stack) > 0)
                {
                    // There exists a starting tag.
                    // We need to do 2 replacements now.
                    $start_index = bbcode_array_pop($stack);

                    // everything before the [quote] tag.
                    $before_start_tag = substr($message, 0, $start_index);

                    // everything after the [quote] tag, but before the [/quote] tag.
                    $between_tags = substr($message, $start_index + 7, $curr_pos - $start_index - 7);

                    // everything after the [/quote] tag.
                    $after_end_tag = substr($message, $curr_pos + 8);

                    $message = $before_start_tag . "<TABLE BORDER=0 ALIGN=CENTER WIDTH=95%><TR><TD><font style=\"FONT-SIZE: 10px;  COLOR: #999999;\">Quote:</font></TD></TR><TR><TD class=barinhoud>";
                    $message .= $between_tags . "</TD></TR><TR><TD></TD></TR></TABLE>";
                    $message .= $after_end_tag;

                    // Now.. we've screwed up the indices by changing the length of the string.
                    // So, if there's anything in the stack, we want to resume searching just after it.
                    // otherwise, we go back to the start.
                    if (sizeof($stack) > 0)
                    {
                        $curr_pos = bbcode_array_pop($stack);
                        bbcode_array_push($stack, $curr_pos);
                        ++$curr_pos;
                    }
                    else
                    {
                        $curr_pos = 1;
                    }
                }
                else
                {
                    // No matching start tag found. Increment pos, keep going.
                    ++$curr_pos;
                }
            }
            else
            {
                // No starting tag or ending tag.. Increment pos, keep looping.,
                ++$curr_pos;
            }
        }
    } // while

    return $message;

}

<?
$msg = bbencode_quote($msg);
?>

function ubbreplace($text){
  $text = htmlEntities($text);  
  $text = preg_replace( "/\r/is", "", $text );
  $text = preg_replace( "/\n/is", "<br />", $text );
  $text = preg_replace( "/\[col=(.+?)\](.+?)\\[\/col\]/is", '<font color="\\1">\\2</font>', $text );
    
    // layout
    $tagArray['s'] = array('open'=>'<s>','close'=>'</s>');
    $tagArray['b'] = array('open'=>'<b>','close'=>'</b>');
    $tagArray['i'] = array('open'=>'<i>','close'=>'</i>');
    $tagArray['u'] = array('open'=>'<u>','close'=>'</u>');
    $tagArray['sub'] = array('open'=>'<sub>','close'=>'</sub>');
    
    // Quote tags
    $tagArray['quote'] = array('open'=>'<blockquote><font class="quote">quote:</font><hr />','close'=>'<hr /></blockquote>');
        
    // URL Tags
    $tagArray['url'] = array('open'=>'<a href="','close'=>'" target="_blank">\\1</a>');
    $tagArray['url=(.*)'] = array('open'=>'<a href="','close'=>'" target="_blank">\\2</a>');
    
    // COLOR tags
    $tagArray['color=(.*)'] = array('open'=>'<font color="','close'=>'">\\2</font>');
    $tagArray['col=(.*)'] = array('open'=>'<font color="','close'=>'">\\2</font>');
    
    // e-mail tags
    $tagArray['email'] = array('open'=>'<a href="mailto:','close'=>'">\\1</a>');
    $tagArray['email=(.*)'] = array('open'=>'<a href="mailto:','close'=>'">\\2</a>');
    
    // Image tags
    $tagArray['img'] = array('open'=>'[img]"','close'=>'"[/img]');
    $tagArray['img=(.*),(.*)'] = array('open'=>'[img]"\\3"[/img]');
    
    // Array of tags with only one part
    $sTagArray['br'] = array('tag'=>'<br />');
    $sTagArray['hr'] = array('tag'=>'<hr />');

    foreach($tagArray as $tagName=>$replace){
         $tagEnd=preg_replace('/\W/Ui','',$tagName);
         $text = preg_replace("|\\[$tagName\](.*)\\[/$tagEnd\]|Ui","$replace[open]\\1$replace[close]",$text);
    }
    foreach($sTagArray as $tagName=>$replace){
         $text= preg_replace("|\\[$tagName\]|Ui","$replace[tag]",$text);
    }
        
    return $text;
}

function reverseUbb($var){

  $var = preg_replace( '/<b>(.+?)\<\/b>/is', "[b]\\1[/b]", $var );
  $var = preg_replace( '/<i>(.+?)\<\/i>/is', "[i]\\1[/i]", $var );  
  $var = preg_replace( '/<u>(.+?)\<\/u>/is', "[u]\\1[/u]", $var );  
  $var = preg_replace( '/<s>(.+?)\<\/s>/is', "[s]\\1[/s]", $var );    
  $var = preg_replace( '/<sub>(.+?)\<\/sub>/is', "[sub]\\1[/sub]", $var );    
  
  $var = preg_replace( '/<a href="(.+?)\" target="_blank">(.+?)\<\/a>/is', "[url=\\1]\\2[/url]", $var );

  $var = preg_replace( '/[img]"(.+?)\"[/img]/is', "[img=\\1,\\2]\\3[/img]", $var );
  $var = preg_replace( '/[img]"(.+?)\"[/img]/is', "[img]\\1[/img]", $var );
  
  
  //$var = preg_replace( '/<blockquote><font class="quote">Quote :<\/font><hr \/>(.+?)\<hr \/><\/blockquote>/is', "[quote]\\1[/quote]", $var );
  
  $var = preg_replace( '/<blockquote><font class=\"quote\">quote:<\/font><hr \/>(.+?)\<hr \/><\/blockquote>/is', "[quote]\\1[/quote]", $var );
  $var = preg_replace( '/<font color=\"(.+?)\\">(.+?)\<\/font>/is', "[col=\\1]\\2[/col]", $var );
  $var = preg_replace( '/<br \/>/is', "\n", $var );
  $var = preg_replace( '/<hr \/>/is', "[hr]", $var );
  return $var;
}