<?php namespace Guzzle\Batch; /** * Interface for efficiently transferring items in a queue using batches */ interface BatchInterface { /** * Add an item to the queue * * @param mixed $item Item to add * * @return self */ public function add($item); /** * Flush the batch and transfer the items * * @return array Returns an array flushed items */ public function flush(); /** * Check if the batch is empty and has further items to transfer * * @return bool */ public function isEmpty(); }