array_rand() feedback

I wrote a function called array_rand() that is supposed to return a random element from the input array. After I wrote it, I asked myself: would it be useful to return the key for that value as well as the value itself? What do you think? Example (without key): $ar = array(1, 2, 3); $val = array_rand($ar); Example (with key): $ar = array("one"=>1, "two"=>2, "three"=>3); list($key, $val) = array_rand($ar); Let me know what you think. I also thought about adding a second argument that specifies how many random elements to return. If that gets added then returning keys and values for multiple arguments gets a little trickier. -Andrei * Unix is user friendly, it is just chooses its users selectively. *