Trim is a stricly string function, I don't see any need giving it an array as argument...

It is so easy to do with php by applying array_walk() to your array or simply looping it... If your case really needs it tyou hen can just add it into sources yourself.

On the other hand, there are already string functions that accept arrays in place of strings returning elaborated lements...

Anyone? Leave this request or close it?

Hmm, -1 for having this feature. In simplest case, you can also use array_map() for this purpose:

$result = array_map('trim',$array);

I don't think this code is too tedious.

Both array_map and array_walk can be used to implement this quite easily. I see no reason to make a string function support array arguments.