session.php

	/**
	 * Add objects or functions to the post-processing queue, executed via self::process_queue()
	 * @param QueryRecord|Callable $fn A QueryRecord to call ->update() on, or a function to execute
	 * @param null|string $name An index to save the queue under, defaults to the SPL object hash for objects
	 */
	public static function queue($fn, $name = null)
	{
		if(is_null($name) && is_object($fn)) {
			$name = spl_object_hash($fn);
		}
		if(is_object($name) && is_object($fn)) {
			$name = spl_object_hash($name);
		}
		if(is_null($name)) {
			self::$write_queue[] = $fn;
		}
		else {
			self::$write_queue[$name] = $fn;
		}
	}

	/**
	 * Call update() on QueryRecords or execute the function queued with self::queue()
	 */
	public static function process_queue()
	{
		foreach(self::$write_queue as $fn) {
			if($fn instanceof QueryRecord) {
				$fn->update();
			}
			else {
				$fn();
			}
		}
	}