Write yourself a function of the UBB transformation

function ubb2xhtml ($ubb)
{
$flash =<<<end
<object classid= "clsid:d27cdb6e-ae6d-11cf-96b8-444553540000"
Codebase= "http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,0,0" width= "%1$d" height= "%2$d" >
<param name= "movie" value= "%3$s"/>
<param name= "Quality" value= "High"/>
<embed src= "%3$s" width= "%1$d" height= "%2$d" "quality=" High "type=" Application/x-shockwave-flash "pluginspage=" Http://www.macromedia.com/go/getflashplayer "></embed>
</object>
End;
$match = array
(
'%[url= ([^s])] (. *?) [/url]%s ',
'%[email= ([^s])] (. *?) [/email]%i ',
'%[img width= (d) height= (d)] (. *?) [/img]%s ',
'%[img= ([^s])/]%s ',
'%[flash width= (d) height= (d)] (. *?) [/flash]%se ',
'%[(b|i|u|strike|sup|sub)] (. *?) [/1]%s ',
'%[h ([1-6])] (. *?) [/h1]%s ',
'%[hr/]%s ',
'%[color= ([^s])] (. *?) [/color]%s ',
'%[font= ([^]])] (. *?) [/font]%s ',
'%[size= ([^s])] (. *?) [/size]%s ',
'%[align= (Center|right|left)] (. *?) [/align]%s ',
'%[valign= (Middle|top|bottom)] (. *?) [/valign]%s ',
/*
'%[ul] (. *?) [/ul]%s ',
'%[ul= (Circle|disc|square)] (. *?) [/ul]%s ',
'%[ol] (. *?) [/ol]%s ',
'%[ol type= ([aAiI1]) start= ([a-za-z1-9])] (. *?) [/ol]%s ',
'%[li] (. *?) [/li]%s ',
*/
'%[table= ([^s]?)] (.*?) [/table]%s ',
'%[caption] (. *?) [/caption]%s ',
'%[tr= ([^s]?)] (.*?) [/tr]%s ',
'%[th] (. *?) [/th]%s ',
'%[TD] (. *?) [/td]%s ',
'%[note] (. *?) [/note]%s ',
'%[quote= (. *?)] (.*?) [/quote]%s ',
'%[code] (. *?) [/code]%s ',
'%[]{2}%s ',//make double-spaces truly double-spaces!
);