Performance and Function Calls

Hey all. Quick question: If I have a function that, say, prints out the months in a year, and I call that function within a 10 cycle loop, which of the following is faster: 1) Have function months() return months as a string; set var string_months = months() outside of the loop; then echo string_months within the loop -- OR 2) Just call months() for each iteration through the loop I'm not sure how PHP interprets option number 1. Guidance for the clueless much appreciated........... --Noah --