note 49389 deleted from functions.arguments by cmb

Note Submitter: csaba at alum dot mit dot edu ---- Argument evaluation left to right means that you can save yourself a temporary variable in the example below whereas $current = $prior + ($prior=$current) is just the same as $current *= 2; function Sum() { return array_sum(func_get_args()); } function Fib($n,$current=1,$prior=0) { for (;--$n;) $current = Sum($prior,$prior=$current); return $current; } Csaba Gabor PS. You could, of course, just use array_sum(array(...)) in place of Sum(...)