Need HELP with Regular Expression !!

[unisabilly]

I'm so unfamiliar with regular expression, but i spend few days on it and come out with the following..

function bbs_decode(&$message)
{
    $search = array ('/(\[img=)[\'"]?(.*?)[\'"]?]/',
                    '/(\[img])(.*?)\[\/img]/', 
                    '/(\[url=)[\'"]?(http:\/\/)?(.*?)[\'"]?](.*?)\[\/url]/',
                    '/(\[size=)(\d{0,2})](.*?)(\[\/size])/',
                    '/(\[color=)[\'"]?(.*)?[\'"]?](.*?)\[\/color]/', 
                    '/\[b](.*?)\[\/b]/',
                    '/\[i](.*?)\[\/i]/',
                    '/\[u](.*?)\[\/u]/',
                    '/(\[quote=)(.*?)]([\s\S]*?)\[\/quote]/',
                    '/[\n]/'
                    );

$replace = array ('<img src="$2">',
                  '<img src="$2">',
                  '<a href="http://$3" target="_blank">$4</a>',
                  '<span style="font-size: $2pt">$3</span>',
                  '<span style="color: $2">$3</span>',
                  '<span style="font-weight: bold">$1</span>',
                  '<span style="font-style: italic">$1</span>',
                  '<span style="font-style: underline">$1</span>',
                  '<div align="center"><table border=0 cellspacing=2 cellpadding=2 width="85%"><tr><td><font style=" font-weight:bold"> Quote from :  $2</font></td></tr><tr><td bgcolor="FFFFFF"  style="border-bottom:1px solid #9a94c5; border-top:1px solid #9a94c5; border-left:1px solid #9a94c5; border-right:1px solid #9a94c5">$3</td></tr></table></div>',
                  '<br />'
                  );
echo nl2br(preg_replace($search,$replace,$message));
return $message;
}

what i'm trying to do is to create a forum...
the above code works fine if the opening tag and the closing tag of the bbs code are in same line
for example

 [ color=red] red text [ /color]

but if opening tag and closing tag are in different lines then it will not work
eg.

[ color=red]
red paragraph
second red line
[ /color]

i think include /n/r somewhere inside the regular expression ...
but... i really don't know how,
can anyone please help me to solve it !!
thanx in advance ~

[xblue]

You might have found it yourself (or given up?) by now, but I think it is the s-modifier you are looking for. It makes the dot in your pattern match all characters including newlines, which it would not do by default. Simply append s after the closing slash in all your patterns, like
/([img=)[\'"]?(.*?)[\'"]?]/s