regex problems

Anon

hello,
i posted this question before, but the advice did not work. i am writing a function to allow ubb code in a discussion forum. ubb code is a way of letting users mark up their posts, for example: this is bold. the advantage to this is that an unclosed bold tag will not mess up the rest of your page. the problem i am having is allowing a tag inside a tag. if i have bold not bold bold again regex will replace the first and last tags leaving the two ubb tags in the middle and making the whole line bold.

here is an example line:
$string = eregi_replace("([b])(.[^{[/b]]+)([/b])",} "\2", $string);

any ideas?

-paul
http://xhawk.net

Anon

Hey Paul,

Wouldn't something like this work?
$string =
str_replace("","",
str_replace("","",
str_replace("","",
str_replace("","",
$string))));

Now, in your program when you type out something like:

He said, "This is really cool!"

It should work. Hope this helps,
Andrew

Anon

Oops, sorry... looks like the code didn't come out right:

<PRE>
$string =
str_replace("","",
str_replace("","",
str_replace("","",
str_replace("","",
$string))));
</PRE>

Anon

yeah that would work. the only problem is that it allows someone to open a tag without closing it, possibly messing up the rest of the page. if i check for a pattern including both an open and a close tag before i substitute, it makes it much more safe.

-p