1--TEST-- 2Check subset size larger than array size 3--FILE-- 4<?php 5 6require_once 'Math/Combinatorics.php'; 7 8$combinatorics = new Math_Combinatorics; 9var_dump($combinatorics->combinations(array('a','b'), 3)); 10var_dump($combinatorics->permutations(array('a','b'), 3)); 11 12?> 13--EXPECT-- 14array(1) { 15 [0]=> 16 array(2) { 17 [0]=> 18 string(1) "a" 19 [1]=> 20 string(1) "b" 21 } 22} 23array(2) { 24 [0]=> 25 array(2) { 26 [0]=> 27 string(1) "a" 28 [1]=> 29 string(1) "b" 30 } 31 [1]=> 32 array(2) { 33 [0]=> 34 string(1) "b" 35 [1]=> 36 string(1) "a" 37 } 38} 39