gistfile1.php

	/**
	 * Returns a list containing items in need of deleteing, and item's in need of adding.
	 * 
	 * list($adding, $deleting) = arr::diff($source, $current);
	 * 
	 * @param	array	The new array.
	 * @param	array	The existing array.
	 * @returns	array
	 */
	public static function diff(array $source, array $current)
	{
		// Uses a two way array_diff algorithm to calculate the differences
		return array(
			array_diff($source, $current),
			array_diff($current, $source)
		);
	}