/**
* If $name is null then the default connection will be returned.
*
* @see Config
* @param string $name Optional name of a connection
* @return Connection
*/
public static function get_connection($name = null)
{
$config = Config::instance();
$name = $name ? $name : $config->get_default_connection();
if (!isset(self::$connections[$name]) || !self::$connections[$name]->connection) {
self::$connections[$name] = Connection::instance($config->get_connection($name));
// If we have PHP DebugBar installed then we wrap the connection around it and register it
if (is_a(self::$connections[$name]->connection, 'PDO') && class_exists('DebugBar\\DebugBar') && self::$debugBarConnections != null) {
self::$connections[$name]->connection = new TraceablePDO(self::$connections[$name]->connection);
self::$debugBarConnections->addConnection(self::$connections[$name]->connection, $name . ' #' . (count(self::$debugBarConnections->getConnections()) + 1));
}
}
return self::$connections[$name];
}