Making BBCode

[incarnate]

Could someone tell me what's the most efficient/least code way to go about making BBCode or refer me to a tutorial? Also, how would I make it so no one can stack tags e.g. , , etc?

Thanks.

[planetsim]

You may wish to have a search of the forums. I believe weedpacket showed a solution

[yelvington]

http://pear.php.net/package/HTML_BBCodeParser