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<?php /** * Akeeba Engine * * @package akeebaengine * @copyright Copyright (c)2006-2021 Nicholas K. Dionysopoulos / Akeeba Ltd * @license GNU General Public License version 3, or later */ namespace Akeeba\Engine\Core; defined('AKEEBAENGINE') || die(); use Akeeba\Engine\Driver\Base as DriverBase; use Akeeba\Engine\Driver\Mysqli; use Akeeba\Engine\Platform; use Exception; /** * A utility class to return a database connection object */ class Database { private static $instances = []; /** * Returns a database connection object. It caches the created objects for future use. * * @param array $options Options to use when instantiating the database connection * * @return DriverBase */ public static function &getDatabase($options, $unset = false) { if (!is_array(self::$instances)) { self::$instances = []; } $signature = serialize($options); if ($unset) { if (!empty(self::$instances[$signature])) { $db = self::$instances[$signature]; $db = null; unset(self::$instances[$signature]); } $null = null; return $null; } if (empty(self::$instances[$signature])) { $driver = array_key_exists('driver', $options) ? $options['driver'] : ''; $select = array_key_exists('select', $options) ? $options['select'] : true; $database = array_key_exists('database', $options) ? $options['database'] : null; $driver = preg_replace('/[^A-Z0-9_\\\.-]/i', '', $driver); if (empty($driver)) { // No driver specified; try to guess $default_signature = serialize(Platform::getInstance()->get_platform_database_options()); if ($signature == $default_signature) { $driver = Platform::getInstance()->get_default_database_driver(true); } else { $driver = Platform::getInstance()->get_default_database_driver(false); } } else { // Make sure a full driver name was given if ((substr($driver, 0, 7) != '\\Akeeba') && substr($driver, 0, 7) != 'Akeeba\\') { $driver = '\\Akeeba\\Engine\\Driver\\' . ucfirst($driver); } } // Useful for PHP 7 which does NOT have the ancient mysql adapter if (($driver == '\\Akeeba\\Engine\\Driver\\Mysql') && !function_exists('mysql_connect')) { $driver = Mysqli::class; } self::$instances[$signature] = new $driver($options); } return self::$instances[$signature]; } public static function unsetDatabase($options) { self::getDatabase($options, true); } }
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