how to grab a “random” set of items from a loop in php

[HeavyGear]

Im looping through some XML nodes, and say i have between 1 and 200 of these nodes.How can i "randomly" select a maximum of 10 of these nodes. It has to be as most ten, but as few as 1.This is what im working with now...\[code\] $i = 0; foreach ($butters->users->user as $user) { if($i==10) break; $id = $user->id; $name = $user->screen_name; $profimg = $user->profile_image_url; echo "things"; $i++; } \[/code\]The difficulty is that i don't know how many i will have, but would like the pool from which i select my "random" 10 to be from the entirety of however many are present.