- var_dump: documentation ( source)
- array_rand: documentation ( source)
- range: documentation ( source)
<?php
$t = range(1, 32, 1);
echo "<pre>";var_dump($t);
$g1 = array_rand($t, 4);
echo "<pre>";var_dump($g1);
unset($t[$g1]);
echo "<pre>";var_dump($t);