extranet/includes/dbbootstrap.php

<?php
/**
 * Bootstrap Doctrine.php, register autoloader specify
 * configuration attributes and load models.
 */
define('DOCTRINE_PATH', realpath(dirname(__FILE__)) . DIRECTORY_SEPARATOR . 'lib/doctrine');
define('MODELS_PATH', realpath(dirname(__FILE__)) . DIRECTORY_SEPARATOR . 'dbmodels');
define('DSN', 'mysql://'.MYSQL_USER.':'.MYSQL_PASS.'@'.MYSQL_HOST);

require_once(DOCTRINE_PATH . DIRECTORY_SEPARATOR . 'Doctrine.php');

spl_autoload_register(array('Doctrine', 'autoload'));
spl_autoload_register(array('Doctrine', 'modelsAutoload'));

$manager = Doctrine_Manager::getInstance();
$manager->setAttribute( Doctrine::ATTR_MODEL_LOADING, Doctrine::MODEL_LOADING_CONSERVATIVE );
$manager->setAttribute( Doctrine::ATTR_AUTO_ACCESSOR_OVERRIDE, TRUE );
$manager->setAttribute( Doctrine::ATTR_USE_NATIVE_ENUM, TRUE );

$sdv1Conn = Doctrine_Manager::connection(DSN . '/sdv1', 'sdv1');
$sdv1Conn->setCharset('utf8');
Doctrine::loadModels(MODELS_PATH . DIRECTORY_SEPARATOR . 'sdv1');
$graydonConn = Doctrine_Manager::connection(DSN . '/graydon', 'graydon');
$graydonConn->setCharset('utf8');
Doctrine::loadModels(MODELS_PATH . DIRECTORY_SEPARATOR . 'graydon');
$intersudConn = Doctrine_Manager::connection(DSN . '/intersud', 'intersud');
$intersudConn->setCharset('utf8');
Doctrine::loadModels(MODELS_PATH . DIRECTORY_SEPARATOR . 'intersud');

$giant = Doctrine_Manager::connection(DSN . '/giantclient', 'giantclient');
$giant->setCharset('utf8');
Doctrine::loadModels(MODELS_PATH . DIRECTORY_SEPARATOR . 'giantclient');

function setDbConn($name){
	global $manager;
	$currentName = $manager->getCurrentConnection()->getName();
	if($currentName != $name){
		//$currentConn = $manager->getCurrentConnection();
		//$manager->closeConnection($currentConn);
		$manager->setCurrentConnection($name);
		Doctrine::loadModels(MODELS_PATH . DIRECTORY_SEPARATOR . $name);
	}
}

?>