<?php
Variations::main();
class Variations
{
private static $n = 4;
private static $k = 3;
private static $arr = array();
private function __construct()
{
}
public static function main()
{
self::variations(0);
}
private static function variations($index)
{
if ($index == self::$k) {
self::printArr();
} else {
for ($i = 0; $i < self::$n; $i++) {
self::$arr[$index] = $i;
self::variations($index + 1);
}
}
}
private static function printArr()
{
echo implode(", ", self::$arr);
echo "<br />";
}
