replacing two regex subsets with nothing

[Anon]

How can I replace two ( ) subsets in an eregi_replace?

My pattern is something like this:

(^{user-)*(-pass$)}

I want to replace both subsets with ''.

How? 🙂

[cordex]

preg_replace("/(^{user-)|(-pass$)} /",' ',$str);

Something like that?