split help.. i think?

[magnus]

I have a variable, $threadinfo[foousers], which containts a list of users separated by spaces. (ie. $threadinfo[foousers] = "foo1 foo2 foo3").

I'm trying to add code to newreply.php that will check the current user against that list, and if a positive match is found it will return foo();

I've tried using the illegal username code, but I just can't seem to tweak it right.

Any help would be appreciated.