fork download
copy 
  1. <?php
  2.  
  3. error_reporting(-1);
  4. mb_internal_encoding('utf-8');
  5.  
  6.  
  7.  
  8. function generateVariation($A, $i = 0){
  9.  
  10.     $result = array();
  11.  
  12.     if ($i < count($A)){
  13.         $variations = generateVariation($A, $i + 1);
  14.  
  15.         for ($j = 0; $j < count($A[$i]); $j++){
  16.             if ($variations){
  17.                 foreach ($variations as $variation){
  18.                     $result[] = array_merge(array($A[$i][$j]), $variation);
  19.                         }
  20.             }else{
  21. 				$result[] = array($A[$i][$j]);
  22. 			}
  23. 		}
  24. 		return $result;
  25. 	}
  26. }
  27.  
  28. $A = array(
  29.     0 => array(1),
  30.     1 => array(1,2,3),
  31.     2 => array(4,5,6)
  32.   );
  33.  
  34. print_r(generateVariation($A, $i = 0));
Success #stdin #stdout 0.02s 24336KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Array
(
    [0] => Array
        (
            [0] => 1
            [1] => 1
            [2] => 4
        )

    [1] => Array
        (
            [0] => 1
            [1] => 1
            [2] => 5
        )

    [2] => Array
        (
            [0] => 1
            [1] => 1
            [2] => 6
        )

    [3] => Array
        (
            [0] => 1
            [1] => 2
            [2] => 4
        )

    [4] => Array
        (
            [0] => 1
            [1] => 2
            [2] => 5
        )

    [5] => Array
        (
            [0] => 1
            [1] => 2
            [2] => 6
        )

    [6] => Array
        (
            [0] => 1
            [1] => 3
            [2] => 4
        )

    [7] => Array
        (
            [0] => 1
            [1] => 3
            [2] => 5
        )

    [8] => Array
        (
            [0] => 1
            [1] => 3
            [2] => 6
        )

)
https://ideone.com/TRasJW
language:
PHP (php 7.3.5)
created:
4 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!