Description: ------------ [size=9]Some size 9 text[/size] Produces <span>Some size 9 text</span> So no font-size is being applied. As soon as the font-size is 10+ it works fine.

Hey Drew, are you able to add in a small executable example?

I confirm, [size=9] does not work. Problem is in regex of splitting tag string to attributes - it requires at least two characters for unquoted attributes (except url tag). Idea of fix - to change way of forming list of not allowed charaters of tag attributes. Also, it is ok to use '=' sign for attribute of img tag. --- BBCodeParser.php.orig 2012-09-14 04:17:33.000000000 +0700 +++ BBCodeParser.php 2012-09-16 21:01:11.000000000 +0700 @@ -456,11 +456,11 @@ // tnx to Onno for the regex // validate the arguments $attributeArray = array(); - $regex = "=(\"[^\s$ce]+\"|[^\s$ce]"; - if ($tag['tag'] != 'url') { - $regex .= "[^=]"; + $regex = "=(\"[^\s$ce]+\"|[^\s$ce"; + if (($tag['tag'] != 'url') && ($tag['tag'] != 'img')) { + $regex .= "="; } - $regex .= "+)(?=[\s$ce])!i"; + $regex .= "]+)(?=[\s$ce])!i"; preg_match_all($regex, $str, $attributeArray, PREG_SET_ORDER); foreach ($attributeArray as $attribute) { $attNam = strtolower($attribute[1]);