chapter 15 forum bbcode

[cfemocha]

I've encountered a problem when I tried to designate words that will be replaced by different phrases on page 547.

I'm getting this error:
Warning: Unknown modifier '? in functions.php on line 334

any help is appreciated.

This is the code from the book:

function bbcode($data)
{ $sql = "SELECT * FROM forum_bbcode";
  $result = mysql_query($sql);
  if (mysql_num_rows($result) > 0)
  { while($row = mysql_fetch_array($result))
    { $bbcode['tpl'][] = "¡±" . html_entity_decode($row
                  ['template'],ENT_QUOTES). "¡±i";
      $bbcode['rep'][] = html_entity_decode($row
                 ['replacement'],ENT_QUOTES);
    }
    $data1 = preg_replace($bbcode['tpl'],$bbcode['rep'],$data);
    $count = 1;
    while (($data1 != $data) and ($count < 4))
    { $count++;
       $data = $data1;
       $data1 = preg_replace($bbcode['tpl'],$bbcode['rep'],$data);
    }
   }
  return $data;
}