friendica_2021.01_tupambae_.../src/Model/Config/DbaConfig.php

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<?php
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/**
* @copyright Copyright (C) 2020, Friendica
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* 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
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
namespace Friendica\Model\Config;
use Friendica\Database\Database;
/**
* The DB-based model of (P-)Config values
* Encapsulates db-calls in case of config queries
*/
abstract class DbaConfig
{
/** @var Database */
protected $dba;
/**
* @param Database $dba The database connection of this model
*/
public function __construct(Database $dba)
{
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$this->dba = $dba;
}
/**
* Checks if the model is currently connected
*
* @return bool
*/
public function isConnected()
{
return $this->dba->isConnected();
}
/**
* Formats a DB value to a config value
* - null = The db-value isn't set
* - bool = The db-value is either '0' or '1'
* - array = The db-value is a serialized array
* - string = The db-value is a string
*
* Keep in mind that there aren't any numeric/integer config values in the database
*
* @param null|string $value
*
* @return null|array|string
*/
protected function toConfigValue($value)
{
if (!isset($value)) {
return null;
}
switch (true) {
// manage array value
case preg_match("|^a:[0-9]+:{.*}$|s", $value):
return unserialize($value);
default:
return $value;
}
}
/**
* Formats a config value to a DB value (string)
*
* @param mixed $value
*
* @return string
*/
protected function toDbValue($value)
{
// if not set, save an empty string
if (!isset($value)) {
return '';
}
switch (true) {
// manage arrays
case is_array($value):
return serialize($value);
default:
return (string)$value;
}
}
}