我有两个迭代器，必须合并成一个结果。以下是数据示例：ArrayIteratorObject([storage:ArrayIterator:private]=>Array([0]=>Array([period]=>04/04/201216:00:00[bl_subs]=>1[bl_unsubs]=>1[bl_block_total]=>1)[1]=>Array([period]=>04/04/201217:00:00[bl_subs]=>1[bl_unsubs]=>2[bl_block_total]=>0)[2]=>Array([period]=>04/04/201218:00:00[b