preg_replace and ereg

[Crusader]

I'm trying to figure out a way to change something like this:

 

[url]http://wordToFind.tld/agawgaw11/agwgag/stuff[/url]

 

into this:

 

[hide][url]http://wordToFind.tld/agawgaw11/agwgag/stuff[/url][/hide]

 

It should search for a specific word, e.g. "wordToFind," in a string but edit the entire string rather than the word. How would I go abouts doing that?

 

Thanks.

[effigy]

I think the cleanest approach is to use preg_replace_callback to capture the entire "..." string, then check for the text within the callback.