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<?php
/**
*
* This file is part of the phpBB Forum Software package.
*
* @copyright (c) phpBB Limited <https://www.phpbb.com>
* @license GNU General Public License, version 2 (GPL-2.0)
*
* For full copyright and license information, please see
* the docs/CREDITS.txt file.
*
*/
namespace phpbb\extension;
/**
* The interface extension meta classes have to implement to run custom code
* on enable/disable/purge.
*/
interface extension_interface
{
/**
* Indicate whether or not the extension can be enabled.
*
* @return bool|array True if extension is enableable, array of reasons
* if not, false for generic reason.
*/
public function is_enableable();
/**
* enable_step is executed on enabling an extension until it returns false.
*
* Calls to this function can be made in subsequent requests, when the
* function is invoked through a webserver with a too low max_execution_time.
*
* @param mixed $old_state The return value of the previous call
* of this method, or false on the first call
* @return mixed Returns false after last step, otherwise
* temporary state which is passed as an
* argument to the next step
*/
public function enable_step($old_state);
/**
* Disables the extension.
*
* Calls to this function can be made in subsequent requests, when the
* function is invoked through a webserver with a too low max_execution_time.
*
* @param mixed $old_state The return value of the previous call
* of this method, or false on the first call
* @return mixed Returns false after last step, otherwise
* temporary state which is passed as an
* argument to the next step
*/
public function disable_step($old_state);
/**
* purge_step is executed on purging an extension until it returns false.
*
* Calls to this function can be made in subsequent requests, when the
* function is invoked through a webserver with a too low max_execution_time.
*
* @param mixed $old_state The return value of the previous call
* of this method, or false on the first call
* @return mixed Returns false after last step, otherwise
* temporary state which is passed as an
* argument to the next step
*/
public function purge_step($old_state);
}
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