Remove the comma from the regex.

But really, do not do it this way. Given that you are processing the entire contents of @array2 for each element in @array1, you have suddenly created an O(n^2) algorithm. This will hurt very quickly if either @array1 or @array2 gets very large. Especially since I would expect @array2 >> @array1.

Try the one of the two hash solutions presented ( either one does basically the same thing ).

mikfire