I have an array displaying results as below:
Array ( [0] => 71 [1] => 56 [2] => 64 [3] => 82 [4] => 90 [5] => 80 [6
$rand5 = array_rand(array_flip($show), 5); // we need array_flip because array_rand returns the keys
http://php.net/array_rand
http://php.net/array_flip