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<?php $fruitpacks = [ ['apples', 3], ['pears', 1], ['apples', 6], ['grapes', 22], ]; abstract class ArrayTools { public static function integerAppend(array $array, $key, int $value) : array { return [$key => $value + ($array[$key] ?? 0)] + $array; } public static function integerAppendFromTuple(array $array, array $keyIntValuePair) : array { return self::integerAppend($array, ...$keyIntValuePair); } } var_dump(array_reduce($fruitpacks, [ArrayTools::class, 'integerAppendFromTuple'], []));
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { ["grapes"]=> int(22) ["apples"]=> int(9) ["pears"]=> int(1) }

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