Parsing BBcode tag url in a string?

[rctxtreme]

I use this code to parse BBcode:

$thedescription=str_replace("[b]","<b>",$thedescription);
But I can't figure out how to parse url tags due to them having to correspond as so:

[url=
<a href="
]
">
Because ] can be generic, I cannot replace ] with ">

...so any help?

[djr33]

http://www.dynamicdrive.com/forums/showthread.php?t=17549

[rctxtreme]

Thanks... I've mixed parts in with my own code.