Converting to VB Script

[KingOfHeart]

I want to convert some tags into VB style. I can easily convert "<b>" to "[b]" using str_replace.
What I need help with are the image and weblinks
I need to convert both ways
<a href = "whatever.com">testing</a> to testing
This is a little trickier because someone might create a broken tag, and if it creates a broken html link, that will produce errors.

[KingOfHeart]

Anyone know how to use the preg_match/all function?
I think this might help with my problem.

[Susmita]

preg_match is a PHP function . Aren't you using VB Script?

In VB you may use a combination of InStr and Mid
Or you could replace "<a href" with "[a href" and "</a>" with "[/a]"

[KingOfHeart]

No, I'm creating this in PHP.
I called it VB because in forums you type [b] and [u], etc.
I'm now thinking maybe it's a str_replace function combined with an explode.