Your Combinations PHP

An efficient combinatorics library for PHP 8 to generate and get the list of all Permutations and Combinations with the ability to enable or disable repetition. (utilizing generators)

Functions

• PowerSet
• Permutation with repetition
• Permutation without repetition
• Combinations with repetition
• Combinations without repetition

Usage

PowerSet

$your_combinations = new YourCombinations([1, 2, 3]);
print_r([...$your_combinations->powerSet()]);

// [
//   [],       [ 1 ],
//   [ 2 ],    [ 1, 2 ],
//   [ 3 ],    [ 1, 3 ],
//   [ 2, 3 ], [ 1, 2, 3 ]
// ]

Permutation with repetition

$your_combinations = new YourCombinations([1, 2, 3]);
$your_combinations->Permutations(4, true);

// [ 1, 1, 1, 1 ]
// [ 1, 1, 1, 2 ]
// [ 1, 1, 1, 3 ]
// [ 1, 1, 2, 1 ]
// [ 1, 1, 2, 2 ]
// [ 1, 1, 2, 3 ]
// [ 1, 1, 3, 1 ]
// [ 1, 1, 3, 2 ]
// [ 1, 1, 3, 3 ]
// [ 1, 2, 1, 1 ]
// [ 1, 2, 1, 2 ]
// [ 1, 2, 1, 3 ]
// [ 1, 2, 2, 1 ]
// [ 1, 2, 2, 2 ]
// [ 1, 2, 2, 3 ]
// [ 1, 2, 3, 1 ]
// [ 1, 2, 3, 2 ]
// [ 1, 2, 3, 3 ]
// [ 1, 3, 1, 1 ]
// [ 1, 3, 1, 2 ]
// [ 1, 3, 1, 3 ]
// [ 1, 3, 2, 1 ]
// [ 1, 3, 2, 2 ]
// [ 1, 3, 2, 3 ]
// [ 1, 3, 3, 1 ]
// [ 1, 3, 3, 2 ]
// [ 1, 3, 3, 3 ]
// [ 2, 1, 1, 1 ]
// [ 2, 1, 1, 2 ]
// [ 2, 1, 1, 3 ]
// [ 2, 1, 2, 1 ]
// [ 2, 1, 2, 2 ]
// [ 2, 1, 2, 3 ]
// [ 2, 1, 3, 1 ]
// [ 2, 1, 3, 2 ]
// [ 2, 1, 3, 3 ]
// [ 2, 2, 1, 1 ]
// [ 2, 2, 1, 2 ]
// [ 2, 2, 1, 3 ]
// [ 2, 2, 2, 1 ]
// [ 2, 2, 2, 2 ]
// [ 2, 2, 2, 3 ]
// [ 2, 2, 3, 1 ]
// [ 2, 2, 3, 2 ]
// [ 2, 2, 3, 3 ]
// [ 2, 3, 1, 1 ]
// [ 2, 3, 1, 2 ]
// [ 2, 3, 1, 3 ]
// [ 2, 3, 2, 1 ]
// [ 2, 3, 2, 2 ]
// [ 2, 3, 2, 3 ]
// [ 2, 3, 3, 1 ]
// [ 2, 3, 3, 2 ]
// [ 2, 3, 3, 3 ]
// [ 3, 1, 1, 1 ]
// [ 3, 1, 1, 2 ]
// [ 3, 1, 1, 3 ]
// [ 3, 1, 2, 1 ]
// [ 3, 1, 2, 2 ]
// [ 3, 1, 2, 3 ]
// [ 3, 1, 3, 1 ]
// [ 3, 1, 3, 2 ]
// [ 3, 1, 3, 3 ]
// [ 3, 2, 1, 1 ]
// [ 3, 2, 1, 2 ]
// [ 3, 2, 1, 3 ]
// [ 3, 2, 2, 1 ]
// [ 3, 2, 2, 2 ]
// [ 3, 2, 2, 3 ]
// [ 3, 2, 3, 1 ]
// [ 3, 2, 3, 2 ]
// [ 3, 2, 3, 3 ]
// [ 3, 3, 1, 1 ]
// [ 3, 3, 1, 2 ]
// [ 3, 3, 1, 3 ]
// [ 3, 3, 2, 1 ]
// [ 3, 3, 2, 2 ]
// [ 3, 3, 2, 3 ]
// [ 3, 3, 3, 1 ]
// [ 3, 3, 3, 2 ]
// [ 3, 3, 3, 3 ]

Permutation without repetition

$your_combinations = new YourCombinations([1, 2, 3]);
$your_combinations->Permutations(2, false);

// [ 1, 2 ]
// [ 1, 3 ]
// [ 2, 1 ]
// [ 2, 3 ]
// [ 3, 1 ]
// [ 3, 2 ]

Combinations with repetition

$your_combinations = new YourCombinations([1, 2, 3]);
$your_combinations->Combinations(4, true);

// [ 1, 1, 1, 1 ]
// [ 1, 1, 1, 2 ]
// [ 1, 1, 1, 3 ]
// [ 1, 1, 2, 2 ]
// [ 1, 1, 2, 3 ]
// [ 1, 1, 3, 3 ]
// [ 1, 2, 2, 2 ]
// [ 1, 2, 2, 3 ]
// [ 1, 2, 3, 3 ]
// [ 1, 3, 3, 3 ]
// [ 2, 2, 2, 2 ]
// [ 2, 2, 2, 3 ]
// [ 2, 2, 3, 3 ]
// [ 2, 3, 3, 3 ]
// [ 3, 3, 3, 3 ]

Combinations without repetition

$your_combinations = new YourCombinations([1, 2, 3]);
$your_combinations->Combinations(2, false);

// [ 1, 2 ]
// [ 1, 3 ]
// [ 2, 3 ]

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