cron_task.php

/**
* Cron task interface
* @package phpBB3
*/
interface cron_task
{
	/**
	* Runs this cron task.
	*/
	public function run();
	
	/**
	* Returns whether this cron task can run, given current board configuration.
	*
	* For example, a cron task that prunes forums can only run when
	* forum pruning is enabled.
	*/
	public function isRunnable();
	
	/**
	* Returns whether this cron task should run now, because enough time
	* has passed since it was last run.
	*/
	public function shouldRun();
	
	/**
	* Returns whether this cron task can be run in shutdown function.
	*/
	public function isShutdownFunctionSafe();
}

/**
* Parametrized cron task interface
* @package phpBB3
*/
interface parametrized_cron_task extends cron_task {
	/**
	* Returns parameters of this cron task as a query string.
	*/
	public function getUrlQueryString();
}