How to randomly display multiple words using PHP

Without long preliminary explanations, I am posting the working code here.

<?php
$input = array("test1", 
	"test2", 
	"test3", 
	"test4", 
	"test5", 
	"test6", 
	"test7", 
	"test8", 
	"test9",
	"test10");
$rand_keys = array_rand($input, 5);
echo $input[$rand_keys[0]] . ", ";
echo $input[$rand_keys[1]] . ", ";
echo $input[$rand_keys[2]] . ", ";
echo $input[$rand_keys[3]] . ", ";
echo $input[$rand_keys[4]] . " ";
?>