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@ 2020-12-07T06:42:00Z

<?php

class Helper
{
    public static function populateCustomMatrices (array $data, array $conf): array
    {
        $result = [];
        foreach ($conf as $groupName => $inclusions) {
            $isolatedData = array_intersect_key($data, array_flip($inclusions));
            for ($i = 0, $max = max(array_map('count', $isolatedData)); $i < $max; ++$i) {
                foreach ($inclusions as $key) {
                    $result[$groupName][$i][$key] = $isolatedData[$key][$i] ?? 0;
                }
            }
        }
        return $result;
    }
}

$data = [
     'assets' => [1, 2, 3],
     'liabilities' => [1, 2, 3, 4, 5, 6],
     'equity' => [1],
     'income' => [1, 2, 3, 4],
     'expenses' => [1, 2, 3]
];

$conf = [
    'balance_sheet' => ['assets', 'liabilities', 'equity'],
    'income' => ['income', 'expenses'],
];

var_export(Helper::populateCustomMatrices($data, $conf));

Output for git.master, git.master_jit, rfc.property-hooks: array ( 'balance_sheet' => array ( 0 => array ( 'assets' => 1, 'liabilities' => 1, 'equity' => 1, ), 1 => array ( 'assets' => 2, 'liabilities' => 2, 'equity' => 0, ), 2 => array ( 'assets' => 3, 'liabilities' => 3, 'equity' => 0, ), 3 => array ( 'assets' => 0, 'liabilities' => 4, 'equity' => 0, ), 4 => array ( 'assets' => 0, 'liabilities' => 5, 'equity' => 0, ), 5 => array ( 'assets' => 0, 'liabilities' => 6, 'equity' => 0, ), ), 'income' => array ( 0 => array ( 'income' => 1, 'expenses' => 1, ), 1 => array ( 'income' => 2, 'expenses' => 2, ), 2 => array ( 'income' => 3, 'expenses' => 3, ), 3 => array ( 'income' => 4, 'expenses' => 0, ), ), )

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2022-12-01 RFC: Property hooks - included in PHP 8.4
2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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