Setting the datasource and adapter for the connection "$name" at runtime. Calling Propel::initialize() will load the necessary database adapters and clear any open connections.

<?php
$dsn = Creole::parseDSN('mysql://localhost/symfony');
 
$c = Propel::getConfiguration();
$c['datasources'][$name]['connection'] = $dsn;
$c['datasources'][$name]['adapter']    = $dsn['phptype'];
Propel::setConfiguration($c);
Propel::initialize();