library/Rediska/PubSub/Connections.php
public function getConnectionByAlias($alias)
    {
        if (!isset($this->_connections[$alias])) {
            throw new Rediska_PubSub_Exception("Can't find connection '$alias'");
        }

        return $this->_connections[$alias];
    }
public function getConnectionByAlias($alias)
    {
        if (!isset($this->_connections[$alias])) {
            throw new Rediska_PubSub_Exception("Can't find connection '$alias'");
        }

        return $this->_connections[$alias];
    }
Get connection by alias

@param string $alias
@return Rediska_Connection