nextcloud/lib/private/legacy/config.php

<?php
/**
 * @author Bart Visscher <bartv@thisnet.nl>
 * @author Joas Schilling <nickvergessen@gmx.de>
 * @author Jörn Friedrich Dreyer <jfd@butonic.de>
 * @author Lukas Reschke <lukas@owncloud.com>
 * @author Michael Gapczynski <gapczynskim@gmail.com>
 * @author Morris Jobke <hey@morrisjobke.de>
 * @author Robin McCorkell <rmccorkell@karoshi.org.uk>
 *
 * @copyright Copyright (c) 2015, ownCloud, Inc.
 * @license AGPL-3.0
 *
 * This code is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License, version 3,
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License, version 3,
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 *
 */
class OC_Config {

	/** @var \OC\Config */
	public static $object;

	/**
	 * Lists all available config keys
	 * @return array an array of key names
	 *
	 * This function returns all keys saved in config.php. Please note that it
	 * does not return the values.
	 */
	public static function getKeys() {
		return self::$object->getKeys();
	}

	/**
	 * Gets a value from config.php
	 * @param string $key key
	 * @param mixed $default = null default value
	 * @return mixed the value or $default
	 *
	 * This function gets the value from config.php. If it does not exist,
	 * $default will be returned.
	 */
	public static function getValue($key, $default = null) {
		return self::$object->getValue($key, $default);
	}

	/**
	 * Sets a value
	 * @param string $key key
	 * @param mixed $value value
	 *
	 * This function sets the value and writes the config.php.
	 *
	 */
	public static function setValue($key, $value) {
		self::$object->setValue($key, $value);
	}

	/**
	 * Sets and deletes values and writes the config.php
	 *
	 * @param array $configs Associative array with `key => value` pairs
	 *                       If value is null, the config key will be deleted
	 */
	public static function setValues(array $configs) {
		self::$object->setValues($configs);
	}

	/**
	 * Removes a key from the config
	 * @param string $key key
	 *
	 * This function removes a key from the config.php.
	 */
	public static function deleteKey($key) {
		self::$object->deleteKey($key);
	}
}