/**
* getInstance
* @access public
* @param mixed $config
* @return Yod_Database
*/
public static function getInstance($config = 'db_dsn')
{
if (is_string($config)) {
$config = Yod::config($config);
}
if (!is_array($config)) {
return false;
}
if (empty($config['type']) || !is_string($config['type'])) {
$config['type'] = 'pdo';
}
$md5key = md5(serialize($config));
if (empty(self::$_db[$md5key])) {
if ($config['type'] == 'pdo') {
$classname = 'Yod_DbPdo';
} else {
$classname = 'Yod_Db' . ucwords($config['type']);
}
if (!class_exists($classname, false)) {
include YOD_RUNPATH . '/Driver/' . substr($classname, 4) . '.php';
}
self::$_db[$md5key] = new $classname($config);
}
return self::$_db[$md5key];
}
