function login($user,$password)
{

$auth = Zend_Auth::getInstance();
$storage = new Zend_Auth_Storage_Session();

$auth->setStorage($storage);

$adapter = new Zend_Auth_Adapter_DBTable(....);

$adapter->setIdentITy($username)->setCredential($password); 

$result = $auth->authenticate($adapter);

if ($result->isValid())
 ......... success!
else 
 .... fail!

您应该创建自己的Zend_Auth_Adapter.此适配器将尝试针对您的三个资源进行身份验证,并将其标记在专用成员变量中,以便您可以知道哪些登录尝试被强制验证.

要创建您的认证适配器,您可以作为Zend_Auth_Adapter_DbTable的基础.

因此,在__construct中,而不是仅传递一个DbTable适配器,您可以传递每个资源中使用的三个适配器.只有当每个人使用不同的资源(例如LDAP)或甚至另一个数据库时,您才能以这种方式执行,否则,您只能传递一个适配器,并在配置选项中设置三个不同的表名.

以下是Zend_Auth_Adapter_DbTable的示例：

/**
     * __construct() - Sets configuration options
     *
     * @param  Zend_Db_Adapter_Abstract $zendDb
     * @param  string                   $tableName
     * @param  string                   $identityColumn
     * @param  string                   $credentialColumn
     * @param  string                   $credentialTreatment
     * @return void
     */
    public function __construct(Zend_Db_Adapter_Abstract $zendDb,$tableName = null,$identityColumn = null,$credentialColumn = null,$credentialTreatment = null)
    {
        $this->_zendDb = $zendDb;

        // Here you can set three table names instead of one
        if (null !== $tableName) {
            $this->setTableName($tableName);
        }

        if (null !== $identityColumn) {
            $this->setIdentityColumn($identityColumn);
        }

        if (null !== $credentialColumn) {
            $this->setCredentialColumn($credentialColumn);
        }

        if (null !== $credentialTreatment) {
            $this->setCredentialTreatment($credentialTreatment);
        }
    }

从Zend_Auth_Adapter_DbTable的方法,尝试对一个表进行身份验证,您可以将其更改为在三个表中尝试,而对于每个表,您可以将其设置为私有成员变量中的标志.像$result [‘group1’] = 1;您将为每次成功登录尝试设置1.

/**
 * authenticate() - defined by Zend_Auth_Adapter_Interface.  This method is called to
 * attempt an authentication.  PrevIoUs to this call,this adapter would have already
 * been configured with all necessary information to successfully connect to a database
 * table and attempt to find a record matching the PRovided identity.
 *
 * @throws Zend_Auth_Adapter_Exception if answering the authentication query is impossible
 * @return Zend_Auth_Result
 */
public function authenticate()
{
    $this->_authenticateSETUP();
    $dbSelect = $this->_authenticateCreateSelect();
    $resultIdentities = $this->_authenticateQuerySelect($dbSelect);

    if ( ($authResult = $this->_authenticateValidateResultset($resultIdentities)) instanceof Zend_Auth_Result) {
        return $authResult;
    }

    $authResult = $this->_authenticateValidateResult(array_shift($resultIdentities));
    return $authResult;
}

只有三次登录尝试之一被成功验证,您才会返回一个有效的$authresult.

现在,在您的控制器中,尝试登录后：

public function LOGinAction()
{
    $form = new Admin_Form_Login();

    if($this->getRequest()->isPost())
    {
        $formData = $this->_request->getPost();

        if($form->isValid($formData))
        {

            $authAdapter = $this->getAuthAdapter();
                $authAdapter->setIdentity($form->getValue('user'))
                            ->setCredential($form->getValue('password'));
                $result = $authAdapter->authenticate();

                if($result->isValid()) 
                {
                    $identity = $authAdapter->getResult();
                    Zend_Auth::getInstance()->getStorage()->write($identity);

                    // redirect here
                }           
        }

    }

    $this->view->form = $form;

}

private function getAuthAdapter() 
{   
    $authAdapter = new MyAuthAdapter(Zend_Db_Table::getDefaultAdapter());
    // Here the three tables
    $authAdapter->setTableName(array('users','users2','users3'))
                ->setIdentityColumn('user')
                ->setCredentialColumn('password')
                ->setCredentialTreatment('MD5(?)');
    return $authAdapter;    
}

这里的关键是下面的行,这将在您的自定义验证适配器中实现：

$identity = $authAdapter->getResult();

您可以将此表单作为基础Zend_Auth_Adapter_DbTable：

/**
     * getResultRowObject() - Returns the result row as a stdClass object
     *
     * @param  string|array $returnColumns
     * @param  string|array $omitColumns
     * @return stdClass|boolean
     */
    public function getResultRowObject($returnColumns = null,$omitColumns = null)
    {
        // ...
    }

当成功进行身份验证时,这将返回登录尝试中匹配的行.
因此,您将创建可返回此行的$getResult()方法以及$this-> result [‘groupX’]标志.
就像是：

public function authenticate() 
{
    // PErform the query for table 1 here and if ok:
    $this->result = $row->toArrray(); // Here you can get the table result of just one table or even merge all in one array if necessary
    $this->result['group1'] = 1;

    // and so on...
    $this->result['group2'] = 1;

    // ...
    $this->result['grouP3'] = 1;

   // Else you will set all to 0 and return a fail result
}

public function getResult()
{
    return $this->result;
}

毕竟,您可以使用Zend_Acl控制您的视图和其他操作.由于您将拥有Zend Auth Storage中的标志,因此您可以使用作为角色：

$this->addRole(new Zend_Acl_Role($row['group1']));

这里有一些资源：

http://framework.zend.com/manual/en/zend.auth.introduction.html

http://zendguru.wordpress.com/2008/11/06/zend-framework-auth-with-examples/

http://alex-tech-adventures.com/development/zend-framework/61-zendauth-and-zendform.html

http://alex-tech-adventures.com/development/zend-framework/62-allocation-resources-and-permissions-with-zendacl.html

http://alex-tech-adventures.com/development/zend-framework/68-zendregistry-and-authentication-improvement.html