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@ 2020-08-16T11:22:01Z

<?php

final class ArrayCleaner
{
    public static function clean(array $value): array
    {
        foreach ($value as $k => $v) {
            if (\is_array($v)) {
                $value[$k] = self::clean($v);

                if (0 == \count($value[$k])) {
                    unset($value[$k]);
                }
            } elseif (empty($v)) {
                unset($value[$k]);
            }
        }

        return $value;
    }
}

$input = [
    'empty_string_to_remove' => '',
    'empty_int_to_remove' => 0,
    'empty_string_number_to_remove' => '0',
    'value_to_keep' => 5,
    'empty_array_to_remove' => [],
    'empty_array_of_empty_arrays_to_remove' => [
        'one' => [],
        'two' => [],
        'three' => [false, null, '0'],
    ],
    'array_to_keep_1' => [
        'value' => 1,
    ],
    'array_to_keep_2' => [
        'empty_to_remove' => [],
        'array_to_keep' => ['yes'],
    ],
];

print_r(ArrayCleaner::clean($input));

Output for git.master, git.master_jit, rfc.property-hooks: Array ( [value_to_keep] => 5 [array_to_keep_1] => Array ( [value] => 1 ) [array_to_keep_2] => Array ( [array_to_keep] => Array ( [0] => yes ) ) )

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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2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn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2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0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2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions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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