Online PHP editor | output for 9Zt7A

<?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));