README

1. Features

PHP-Combination is a simple PHP library to make combinations from array elements.

PHP-Combination can:

create all combinations
sort combinations
create pairs
create all combinations of N elements
create all combinations of A 2 B elements
create all combinations between multiple arrays
be used in data provider of PHPUnit

3. Requirements

PHP 8.1 or later
Composer

4. Installation

composer require macocci7/php-combination

5. Classes

There're 2 types of classes for the same methods.

5.1. Combination

Macocci7\PhpCombination\Combination

This class returns the result as type of array.

5.2. CombinationGenerator

Macocci7\PhpCombination\CombinationGenerator

This class returns the result as type of Generator object.

5.3. How to choose the class to use

There might be 3 factors.

The number of elements of the param and result of all()

If the array of the param has $n elements,

the number of array elements of returned array will be:

2 ** $n - 1

$n	formula	elements
1	2 ** 1 - 1	1
5	2 ** 5 - 1	31
10	2 ** 10 - 1	1,023
20	2 ** 20 - 1	1,048,575
30	2 ** 30 - 1	1,073,741,823
40	2 ** 40 - 1	1,099,511,627,775
50	2 ** 50 - 1	1,125,899,906,842,623
60	2 ** 60 - 1	1,152,921,504,606,846,975
62	2 ** 62 - 1	4,611,686,018,427,387,903

Memory limit on your environment

Memory usage depends on:
- the number of array elements to return
- the type of data
Combination uses much more memory than CombinationGenerator.
execution time

Looping Generator takes much longer time than looping array.

In some cases, CombinationGenerator takes several times longer than Combination.

However, using an array with many elements as an argument can cause Combination to exceed memory limits.

In that case, use CombinationGenerator.

It will never exceeds the memory limit, and certainly complete the task.

6. Methods

6.1. Macocci7\PhpCombination\Combination

all(): returns all combinations of the param
pairs(): returns all pairs of the param
ofN(): returns all combinations of N elements of the param
ofA2B(): returns all combinations of A to B elements of the param
fromArrays(): returns all combinations of multiple arrays as an instance of Iterator.

6.2. Macocci7\PhpCombination\CombinationGenenrator

all(): returns all combinations of the param
pairs(): returns all pairs of the param
ofN(): returns all combinations of N elements of the param
ofA2B(): returns all combinations of A to B elements of the param
fromArrays(): returns all combinations of multiple arrays as an instance of Iterator.

7. Limit on the Number of Array Elements

The number of array elements of the param:

32bit-system: 30 elements
64bit-system: 62 elements

This limit is set to ensure that the number of elements in the returned array does not exceed the PHP upper limit on the index number of array.

The max index number of array in PHP equals to PHP_INT_MAX.

PHP_INT_MAX:

32bit-system: 2147483647 === 2 ** 31 - 1
64bit-system: 9223372036854775807 === 2 ** 63 - 1

8. Usage

8.1. Basic Usage
- 8.1.1. Combination
- 8.1.2. CombinationGenerator
8.2. Using Combination
8.3. Using Combination with Sorting
8.4. Using CombinationGenerator
8.5. Using In PHPUnit

8.1. Basic Usage

8.1.1 Combination

PHP:

<?php

require_once __DIR__ . '/../vendor/autoload.php';

use Macocci7\PhpCombination\Combination;

$c = new Combination();
$items = [ 'A', 'B', 'C', ];

foreach ($c->all($items) as $index => $item) {
    echo sprintf(
        "%d: (%s)\n",
        $index,
        implode(', ', $item)
    );
}

Result:

0: (A, B, C)
1: (A, B)
2: (A, C)
3: (A)
4: (B, C)
5: (B)
6: (C)

8.1.2. CombinationGenerator

PHP:

<?php

require_once __DIR__ . '/../vendor/autoload.php';

use Macocci7\PhpCombination\CombinationGenerator;

$c = new CombinationGenerator();
$items = [ 'A', 'B', 'C', ];

foreach ($c->all($items) as $index => $item) {
    echo sprintf(
        "%d: (%s)\n",
        $index,
        implode(', ', $item)
    );
}

Result:

0: (A, B, C)
1: (A, B)
2: (A, C)
3: (A)
4: (B, C)
5: (B)
6: (C)

8.2. Using Combination

PHP:

<?php

require_once __DIR__ . '/../vendor/autoload.php';

use Macocci7\PhpCombination\Combination;

// Create an Instance
$c = new Combination();

// All Items
$items = ['A', 'B', 'C', 'D', 'E', ];
echo sprintf("All Items:\n\t(%s)\n\n", implode(", ", $items));

// Call back
$f = function (array $array): string {
    return sprintf("(%s)", implode(', ', $array));
};

// All Combinations
echo sprintf(
    "All Combinations:\n\t%s\n\n",
    implode("\n\t", array_map($f, $c->all($items)))
);

// All Pairs
echo sprintf(
    "All Pairs:\n\t%s\n\n",
    implode("\n\t", array_map($f, $c->pairs($items)))
);

// All Combinations of $n elements
$n = 3;
echo sprintf(
    "All Combinations of %d elements:\n\t%s\n\n",
    $n,
    implode("\n\t", array_map($f, $c->ofN($items, $n)))
);

// All Combinations of $a to $b elements
$a = 3;
$b = 4;
echo sprintf(
    "All Combinations of %d to %d elements:\n\t%s\n\n",
    $a,
    $b,
    implode("\n\t", array_map($f, $c->ofA2B($items, $a, $b)))
);

// All Combinations of $a1, $a2 and $a3
$a1 = ['A1', 'A2', ];
$a2 = ['B1', 'B2', 'B3', ];
$a3 = ['C1', 'C2', 'C3', 'C4', ];

echo "All Combinations of multiple arrays:\n";
echo sprintf("\tArray1: (%s)\n", implode(', ', $a1));
echo sprintf("\tArray2: (%s)\n", implode(', ', $a2));
echo sprintf("\tArray3: (%s)\n", implode(', ', $a3));

$r = $c->fromArrays([$a1, $a2, $a3, ]);
$count = count($a1) * count($a2) * count($a3);
$n = strlen((string) $count);
echo sprintf("\tThere're %d patterns:\n", $count);
foreach ($r as $i => $e) {
    echo sprintf("\t%" . $n . "d: (%s)\n", $i + 1, implode(', ', $e));
}

Result:

All Items:
    (A, B, C, D, E)

All Combinations:
    (A, B, C, D, E)
    (A, B, C, D)
    (A, B, C, E)
    (A, B, C)
    (A, B, D, E)
    (A, B, D)
    (A, B, E)
    (A, B)
    (A, C, D, E)
    (A, C, D)
    (A, C, E)
    (A, C)
    (A, D, E)
    (A, D)
    (A, E)
    (A)
    (B, C, D, E)
    (B, C, D)
    (B, C, E)
    (B, C)
    (B, D, E)
    (B, D)
    (B, E)
    (B)
    (C, D, E)
    (C, D)
    (C, E)
    (C)
    (D, E)
    (D)
    (E)

All Pairs:
    (A, B)
    (A, C)
    (A, D)
    (A, E)
    (B, C)
    (B, D)
    (B, E)
    (C, D)
    (C, E)
    (D, E)

All Combinations of 3 elements:
    (A, B, C)
    (A, B, D)
    (A, B, E)
    (A, C, D)
    (A, C, E)
    (A, D, E)
    (B, C, D)
    (B, C, E)
    (B, D, E)
    (C, D, E)

All Combinations of 3 to 4 elements:
    (A, B, C, D)
    (A, B, C, E)
    (A, B, C)
    (A, B, D, E)
    (A, B, D)
    (A, B, E)
    (A, C, D, E)
    (A, C, D)
    (A, C, E)
    (A, D, E)
    (B, C, D, E)
    (B, C, D)
    (B, C, E)
    (B, D, E)
    (C, D, E)

All Combinations of multiple arrays:
    Array1: (A1, A2)
    Array2: (B1, B2, B3)
    Array3: (C1, C2, C3, C4)
    There're 24 patterns:
    1: (A1, B1, C1)
    2: (A1, B1, C2)
    3: (A1, B1, C3)
    4: (A1, B1, C4)
    5: (A1, B2, C1)
    6: (A1, B2, C2)
    7: (A1, B2, C3)
    8: (A1, B2, C4)
    9: (A1, B3, C1)
    10: (A1, B3, C2)
    11: (A1, B3, C3)
    12: (A1, B3, C4)
    13: (A2, B1, C1)
    14: (A2, B1, C2)
    15: (A2, B1, C3)
    16: (A2, B1, C4)
    17: (A2, B2, C1)
    18: (A2, B2, C2)
    19: (A2, B2, C3)
    20: (A2, B2, C4)
    21: (A2, B3, C1)
    22: (A2, B3, C2)
    23: (A2, B3, C3)
    24: (A2, B3, C4)

8.3. Using Combination with Sorting

PHP:

<?php

require_once __DIR__ . '/../vendor/autoload.php';

use Macocci7\PhpCombination\Combination;

// Create an Instance
$c = new Combination();

// All Items
$items = ['A', 'B', 'C', 'D', 'E', ];
echo sprintf("All Items:\n\t(%s)\n\n", implode(", ", $items));

// Set a flag to sort
$sort = true;

// Call back
$f = function (array $array): string {
    return sprintf("(%s)", implode(', ', $array));
};

// All Combinations
echo sprintf(
    "All Combinations:\n\t%s\n\n",
    implode("\n\t", array_map($f, $c->all($items, $sort)))
);

// All Pairs: does not support sorting
echo sprintf(
    "All Pairs:\n\t%s\n\n",
    implode("\n\t", array_map($f, $c->pairs($items)))
);

// All Combinations of $n elements
$n = 3;
echo sprintf(
    "All Combinations of %d elements:\n\t%s\n\n",
    $n,
    implode("\n\t", array_map($f, $c->ofN($items, $n, $sort)))
);

// All Combinations of $a to $b elements
$a = 3;
$b = 4;
echo sprintf(
    "All Combinations of %d to %d elements:\n\t%s\n\n",
    $a,
    $b,
    implode("\n\t", array_map($f, $c->ofA2B($items, $a, $b, $sort)))
);

// All Combinations of $a1, $a2 and $a3: does not support sorting
$a1 = ['A1', 'A2', ];
$a2 = ['B1', 'B2', 'B3', ];
$a3 = ['C1', 'C2', 'C3', 'C4', ];

echo "All Combinations of multiple arrays:\n";
echo sprintf("\tArray1: (%s)\n", implode(', ', $a1));
echo sprintf("\tArray2: (%s)\n", implode(', ', $a2));
echo sprintf("\tArray3: (%s)\n", implode(', ', $a3));

$r = $c->fromArrays([$a1, $a2, $a3, ]);
$count = count($a1) * count($a2) * count($a3);
$n = strlen((string) $count);
echo sprintf("\tThere're %d patterns:\n", $count);
foreach ($r as $i => $e) {
    echo sprintf("\t%" . $n . "d: (%s)\n", $i + 1, implode(', ', $e));
}

Result:

All Items:
    (A, B, C, D, E)

All Combinations:
    (A)
    (A, B)
    (A, B, C)
    (A, B, C, D)
    (A, B, C, D, E)
    (A, B, C, E)
    (A, B, D)
    (A, B, D, E)
    (A, B, E)
    (A, C)
    (A, C, D)
    (A, C, D, E)
    (A, C, E)
    (A, D)
    (A, D, E)
    (A, E)
    (B)
    (B, C)
    (B, C, D)
    (B, C, D, E)
    (B, C, E)
    (B, D)
    (B, D, E)
    (B, E)
    (C)
    (C, D)
    (C, D, E)
    (C, E)
    (D)
    (D, E)
    (E)

All Pairs:
    (A, B)
    (A, C)
    (A, D)
    (A, E)
    (B, C)
    (B, D)
    (B, E)
    (C, D)
    (C, E)
    (D, E)

All Combinations of 3 elements:
    (A, B, C)
    (A, B, D)
    (A, B, E)
    (A, C, D)
    (A, C, E)
    (A, D, E)
    (B, C, D)
    (B, C, E)
    (B, D, E)
    (C, D, E)

All Combinations of 3 to 4 elements:
    (A, B, C)
    (A, B, C, D)
    (A, B, C, E)
    (A, B, D)
    (A, B, D, E)
    (A, B, E)
    (A, C, D)
    (A, C, D, E)
    (A, C, E)
    (A, D, E)
    (B, C, D)
    (B, C, D, E)
    (B, C, E)
    (B, D, E)
    (C, D, E)

All Combinations of multiple arrays:
    Array1: (A1, A2)
    Array2: (B1, B2, B3)
    Array3: (C1, C2, C3, C4)
    There're 24 patterns:
    1: (A1, B1, C1)
    2: (A1, B1, C2)
    3: (A1, B1, C3)
    4: (A1, B1, C4)
    5: (A1, B2, C1)
    6: (A1, B2, C2)
    7: (A1, B2, C3)
    8: (A1, B2, C4)
    9: (A1, B3, C1)
    10: (A1, B3, C2)
    11: (A1, B3, C3)
    12: (A1, B3, C4)
    13: (A2, B1, C1)
    14: (A2, B1, C2)
    15: (A2, B1, C3)
    16: (A2, B1, C4)
    17: (A2, B2, C1)
    18: (A2, B2, C2)
    19: (A2, B2, C3)
    20: (A2, B2, C4)
    21: (A2, B3, C1)
    22: (A2, B3, C2)
    23: (A2, B3, C3)
    24: (A2, B3, C4)

8.4. Using CombinationGenerator

PHP:

<?php

require_once __DIR__ . '/../vendor/autoload.php';

use Macocci7\PhpCombination\CombinationGenerator;

// Create an Instance
$c = new CombinationGenerator();

// All Items
$items = ['A', 'B', 'C', 'D', 'E', ];
echo sprintf("All Items:\n\t(%s)\n\n", implode(", ", $items));

// Common Format
$fmt = "\t(%s)\n";

// All Combinations
echo "All Combinations:\n";
foreach ($c->all($items) as $e) {
    echo sprintf($fmt, implode(', ', $e));
}
echo "\n";

// All Pairs
echo "All Pairs:\n";
foreach ($c->pairs($items) as $e) {
    echo sprintf($fmt, implode(', ', $e));
}
echo "\n";

// All Combinations of $n elements
$n = 3;
echo sprintf("All Combinations of %d elements:\n", $n);
foreach ($c->ofN($items, $n) as $e) {
    echo sprintf($fmt, implode(', ', $e));
}
echo "\n";

// All Combinations of $a to $b elements
$a = 3;
$b = 4;
echo sprintf(
    "All Combinations of %d to %d elements:\n",
    $a,
    $b,
);
foreach ($c->ofA2B($items, $a, $b) as $e) {
    echo sprintf($fmt, implode(', ', $e));
}
echo "\n";

// All Combinations of $a1, $a2 and $a3
$a1 = [ 'A1', 'A2', ];
$a2 = [ 'B1', 'B2', 'B3', ];
$a3 = [ 'C1', 'C2', 'C3', 'C4', ];

echo "All Combinations of multiple arrays:\n";
echo sprintf("\tArray1: (%s)\n", implode(', ', $a1));
echo sprintf("\tArray2: (%s)\n", implode(', ', $a2));
echo sprintf("\tArray3: (%s)\n", implode(', ', $a3));

$r = $c->fromArrays([$a1, $a2, $a3, ]);
$count = count($a1) * count($a2) * count($a3);
$n = strlen((string) $count);
echo sprintf("\tThere're %d patterns:\n", $count);
foreach ($r as $i => $e) {
    echo sprintf("\t%" . $n . "d: (%s)\n", $i + 1, implode(', ', $e));
}

Result:

All Items:
    (A, B, C, D, E)

All Combinations:
    (A, B, C, D, E)
    (A, B, C, D)
    (A, B, C, E)
    (A, B, C)
    (A, B, D, E)
    (A, B, D)
    (A, B, E)
    (A, B)
    (A, C, D, E)
    (A, C, D)
    (A, C, E)
    (A, C)
    (A, D, E)
    (A, D)
    (A, E)
    (A)
    (B, C, D, E)
    (B, C, D)
    (B, C, E)
    (B, C)
    (B, D, E)
    (B, D)
    (B, E)
    (B)
    (C, D, E)
    (C, D)
    (C, E)
    (C)
    (D, E)
    (D)
    (E)

All Pairs:
    (A, B)
    (A, C)
    (A, D)
    (A, E)
    (B, C)
    (B, D)
    (B, E)
    (C, D)
    (C, E)
    (D, E)

All Combinations of 3 elements:
    (A, B, C)
    (A, B, D)
    (A, B, E)
    (A, C, D)
    (A, C, E)
    (A, D, E)
    (B, C, D)
    (B, C, E)
    (B, D, E)
    (C, D, E)

All Combinations of 3 to 4 elements:
    (A, B, C, D)
    (A, B, C, E)
    (A, B, C)
    (A, B, D, E)
    (A, B, D)
    (A, B, E)
    (A, C, D, E)
    (A, C, D)
    (A, C, E)
    (A, D, E)
    (B, C, D, E)
    (B, C, D)
    (B, C, E)
    (B, D, E)
    (C, D, E)

All Combinations of multiple arrays:
    Array1: (A1, A2)
    Array2: (B1, B2, B3)
    Array3: (C1, C2, C3, C4)
    There're 24 patterns:
    1: (A1, B1, C1)
    2: (A1, B1, C2)
    3: (A1, B1, C3)
    4: (A1, B1, C4)
    5: (A1, B2, C1)
    6: (A1, B2, C2)
    7: (A1, B2, C3)
    8: (A1, B2, C4)
    9: (A1, B3, C1)
    10: (A1, B3, C2)
    11: (A1, B3, C3)
    12: (A1, B3, C4)
    13: (A2, B1, C1)
    14: (A2, B1, C2)
    15: (A2, B1, C3)
    16: (A2, B1, C4)
    17: (A2, B2, C1)
    18: (A2, B2, C2)
    19: (A2, B2, C3)
    20: (A2, B2, C4)
    21: (A2, B3, C1)
    22: (A2, B3, C2)
    23: (A2, B3, C3)
    24: (A2, B3, C4)

8.5. Using In PHPUnit

For Example, fromArray() method can be quite useful for testing with data providers of PHPUnit.

Here's an example for testing the class for ordering products,

with patterns of size, color and amount.

Install MONOLOG before testing: (Just for this example)
```
composer require --dev monolog/monolog
```

PHP: Class to be tested

<?php

namespace Macocci7\PhpCombination\Examples;

use Monolog\Level;
use Monolog\Logger;
use Monolog\Handler\StreamHandler;

class UseInPhpUnit
{
    private Logger $log;

    public function __construct()
    {
        $this->log = new Logger('UseInPhpUnit');
        $this->log->pushHandler(
            new StreamHandler(__DIR__ . '/UseInPhpUnit.log', Level::Debug)
        );
    }

    public function order(
        int $productId,
        string $size,
        string $color,
        int $amount
    ) {
        $this->log->info('Adding a new order', [
            'productId' => $productId,
            'size' => $size,
            'color' => $color,
            'amount' => $amount,
        ]);
        return true;
    }
}

PHP: Test Class

<?php

declare(strict_types=1);

namespace Macocci7\PhpCombination;

require_once __DIR__ . '/../vendor/autoload.php';
require_once __DIR__ . '/UseInPhpUnit.class.php';

use PHPUnit\Framework\Attributes\DataProvider;
use PHPUnit\Framework\TestCase;
use Macocci7\PhpCombination\Examples\UseInPhpUnit;
use Macocci7\PhpCombination\Combination;

final class UseInPhpUnitTest extends TestCase
{
    public static function provide_order_can_order_correctly(): array
    {
        $products = [ 1101, 1102, ];
        $sizes = [ 'S', 'M', 'L', ];
        $colors = [ 'White', 'Black', ];
        $amount = [ 1, 2, ];
        $c = new Combination();
        $data = [];
        foreach (
            $c->fromArrays([$products, $sizes, $colors, $amount]) as $e
        ) {
            $data[implode(', ', $e)] = $e;
        }
        return $data;
    }

    /**
    * PHPDoc for PHPUnit 9.x
    * @dataProvider provide_order_can_order_correctly
    */
    // Attribute for PHPUnit 10.x or later
    #[DataProvider('provide_order_can_order_correctly')]
    public function test_order_can_order_correctly(
        int $productId,
        string $size,
        string $color,
        int $amount
    ): void {
        $u = new UseInPhpUnit();
        $this->assertTrue($u->order(
            $productId,
            $size,
            $color,
            $amount
        ));
    }
}

Result: STDOUT

$ vendor/bin/phpunit ./examples/UseInPhpUnitTest.php --color=auto --testdox
PHPUnit 10.5.19 by Sebastian Bergmann and contributors.

Runtime:       PHP 8.1.26

........................                                          24 / 24 (100%)

Time: 00:00.053, Memory: 8.00 MB

Use In Php Unit (Macocci7\PhpCombination\UseInPhpUnit)
✔ Order can order correctly with 1101,·S,·White,·1
✔ Order can order correctly with 1101,·S,·White,·2
✔ Order can order correctly with 1101,·S,·Black,·1
✔ Order can order correctly with 1101,·S,·Black,·2
✔ Order can order correctly with 1101,·M,·White,·1
✔ Order can order correctly with 1101,·M,·White,·2
✔ Order can order correctly with 1101,·M,·Black,·1
✔ Order can order correctly with 1101,·M,·Black,·2
✔ Order can order correctly with 1101,·L,·White,·1
✔ Order can order correctly with 1101,·L,·White,·2
✔ Order can order correctly with 1101,·L,·Black,·1
✔ Order can order correctly with 1101,·L,·Black,·2
✔ Order can order correctly with 1102,·S,·White,·1
✔ Order can order correctly with 1102,·S,·White,·2
✔ Order can order correctly with 1102,·S,·Black,·1
✔ Order can order correctly with 1102,·S,·Black,·2
✔ Order can order correctly with 1102,·M,·White,·1
✔ Order can order correctly with 1102,·M,·White,·2
✔ Order can order correctly with 1102,·M,·Black,·1
✔ Order can order correctly with 1102,·M,·Black,·2
✔ Order can order correctly with 1102,·L,·White,·1
✔ Order can order correctly with 1102,·L,·White,·2
✔ Order can order correctly with 1102,·L,·Black,·1
✔ Order can order correctly with 1102,·L,·Black,·2

OK (24 tests, 24 assertions)

Result: LOG

[2024-04-18T00:46:47.065595+00:00] UseInPhpUnit.INFO: Adding a new order {"productId":1101,"size":"S","color":"White","amount":1} []
[2024-04-18T00:46:47.069266+00:00] UseInPhpUnit.INFO: Adding a new order {"productId":1101,"size":"S","color":"White","amount":2} []
[2024-04-18T00:46:47.070687+00:00] UseInPhpUnit.INFO: Adding a new order {"productId":1101,"size":"S","color":"Black","amount":1} []
[2024-04-18T00:46:47.072942+00:00] UseInPhpUnit.INFO: Adding a new order {"productId":1101,"size":"S","color":"Black","amount":2} []
[2024-04-18T00:46:47.074656+00:00] UseInPhpUnit.INFO: Adding a new order {"productId":1101,"size":"M","color":"White","amount":1} []
[2024-04-18T00:46:47.077154+00:00] UseInPhpUnit.INFO: Adding a new order {"productId":1101,"size":"M","color":"White","amount":2} []
[2024-04-18T00:46:47.078569+00:00] UseInPhpUnit.INFO: Adding a new order {"productId":1101,"size":"M","color":"Black","amount":1} []
[2024-04-18T00:46:47.079828+00:00] UseInPhpUnit.INFO: Adding a new order {"productId":1101,"size":"M","color":"Black","amount":2} []
[2024-04-18T00:46:47.080988+00:00] UseInPhpUnit.INFO: Adding a new order {"productId":1101,"size":"L","color":"White","amount":1} []
[2024-04-18T00:46:47.082439+00:00] UseInPhpUnit.INFO: Adding a new order {"productId":1101,"size":"L","color":"White","amount":2} []
[2024-04-18T00:46:47.083968+00:00] UseInPhpUnit.INFO: Adding a new order {"productId":1101,"size":"L","color":"Black","amount":1} []
[2024-04-18T00:46:47.084862+00:00] UseInPhpUnit.INFO: Adding a new order {"productId":1101,"size":"L","color":"Black","amount":2} []
[2024-04-18T00:46:47.085751+00:00] UseInPhpUnit.INFO: Adding a new order {"productId":1102,"size":"S","color":"White","amount":1} []
[2024-04-18T00:46:47.086692+00:00] UseInPhpUnit.INFO: Adding a new order {"productId":1102,"size":"S","color":"White","amount":2} []
[2024-04-18T00:46:47.090893+00:00] UseInPhpUnit.INFO: Adding a new order {"productId":1102,"size":"S","color":"Black","amount":1} []
[2024-04-18T00:46:47.092489+00:00] UseInPhpUnit.INFO: Adding a new order {"productId":1102,"size":"S","color":"Black","amount":2} []
[2024-04-18T00:46:47.094058+00:00] UseInPhpUnit.INFO: Adding a new order {"productId":1102,"size":"M","color":"White","amount":1} []
[2024-04-18T00:46:47.095176+00:00] UseInPhpUnit.INFO: Adding a new order {"productId":1102,"size":"M","color":"White","amount":2} []
[2024-04-18T00:46:47.096440+00:00] UseInPhpUnit.INFO: Adding a new order {"productId":1102,"size":"M","color":"Black","amount":1} []
[2024-04-18T00:46:47.099292+00:00] UseInPhpUnit.INFO: Adding a new order {"productId":1102,"size":"M","color":"Black","amount":2} []
[2024-04-18T00:46:47.100918+00:00] UseInPhpUnit.INFO: Adding a new order {"productId":1102,"size":"L","color":"White","amount":1} []
[2024-04-18T00:46:47.102176+00:00] UseInPhpUnit.INFO: Adding a new order {"productId":1102,"size":"L","color":"White","amount":2} []
[2024-04-18T00:46:47.103248+00:00] UseInPhpUnit.INFO: Adding a new order {"productId":1102,"size":"L","color":"Black","amount":1} []
[2024-04-18T00:46:47.106206+00:00] UseInPhpUnit.INFO: Adding a new order {"productId":1102,"size":"L","color":"Black","amount":2} []

9. Examples

BasicUsage.php >> results in BasicUsage.txt
BasicUsageGenerator.php >> results in BasicUsageGenerator.txt
UseCombination.php >> results in UseCombination.txt
UseCombinationSort.php >> results in UseCombinationSort.txt
UseCombinationGenerator.php >> results in UseCombinationGenerator.txt
UseInPhpUnit.class.php & UseInPhpUnitTest.php >> results in UseInPhpUnit.log

10. LICENSE

MIT

Document Created: 2023/11/11

Document Updated: 2024/05/15

macocci7 / php-combination

Maintainers

Details

README

1. Features

2. Contents

3. Requirements

4. Installation

5. Classes

5.1. Combination

5.2. CombinationGenerator

5.3. How to choose the class to use

6. Methods

6.1. Macocci7\PhpCombination\Combination

6.2. Macocci7\PhpCombination\CombinationGenenrator

7. Limit on the Number of Array Elements

8. Usage

8.1. Basic Usage

8.1.1 Combination

8.1.2. CombinationGenerator

8.2. Using Combination

8.3. Using Combination with Sorting

8.4. Using CombinationGenerator

8.5. Using In PHPUnit

9. Examples

10. LICENSE