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@ 2020-03-31T09:41:48Z

<?php

$data = [
    [
        'rates' => [1, 2],
        'origin' => 1,
    ],
    [
        'rates' => [3, 4],
        'origin' => 2,
    ],
    [
        'rates' => [5],
        'origin' => 3,
    ],
];
// нужно получить все возможные комбинации, как показано ниже
 
 
$expected1 = [
    [
        [
            'rate' => 1,
            'origin' => 1,
        ],
        [
            'rate' => 3,
            'origin' => 2,
        ],
        [
            'rate' => 5,
            'origin' => 3,
        ],
    ],
    [
        [
            'rate' => 1,
            'origin' => 1,
        ],
        [
            'rate' => 4,
            'origin' => 2,
        ],
        [
            'rate' => 5,
            'origin' => 3,
        ],
    ],
    [
        [
            'rate' => 2,
            'origin' => 1,
        ],
        [
            'rate' => 3,
            'origin' => 2,
        ],
        [
            'rate' => 5,
            'origin' => 3,
        ],
    ],
    [
        [
            'rate' => 2,
            'origin' => 1,
        ],
        [
            'rate' => 4,
            'origin' => 2,
        ],
        [
            'rate' => 5,
            'origin' => 3,
        ],
    ],
];
        $expected = [];
        $iteratorCount = 0;
        foreach ($data as $key => $block) {
            $data[$key]['iterator'] = 0;
            $iteratorCount++;
        }
        $tempCounter = 0;
        while ($tempCounter < $iteratorCount) {
            $temp = [];
            $tempCounter = 0;
            foreach ($data as $key => $block) {
                $temp[] = ['rate' => $block['rates'][$block['iterator']],'origin' => $block['origin']];
            }
            $expected[] = $temp;
            foreach ($data as $key => $block) {
                if ($block['iterator'] + 1 < count($block['rates'])) {
                    $data[$key]['iterator']++;
                    break;
                } else {
                    $data[$key]['iterator'] = 0;
                    $tempCounter++;
                }
            }
        }
        
        print_r($expected);

Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.13: Array ( [0] => Array ( [0] => Array ( [rate] => 1 [origin] => 1 ) [1] => Array ( [rate] => 3 [origin] => 2 ) [2] => Array ( [rate] => 5 [origin] => 3 ) ) [1] => Array ( [0] => Array ( [rate] => 2 [origin] => 1 ) [1] => Array ( [rate] => 3 [origin] => 2 ) [2] => Array ( [rate] => 5 [origin] => 3 ) ) [2] => Array ( [0] => Array ( [rate] => 1 [origin] => 1 ) [1] => Array ( [rate] => 4 [origin] => 2 ) [2] => Array ( [rate] => 5 [origin] => 3 ) ) [3] => Array ( [0] => Array ( [rate] => 2 [origin] => 1 ) [1] => Array ( [rate] => 4 [origin] => 2 ) [2] => Array ( [rate] => 5 [origin] => 3 ) ) )

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