AuthenticationManager::login PHP Method

    public function login(LoginForm $form, IWebUser $user, CHttpRequest $request = null)
    {
        if (false === $form->validate()) {
            Yii::app()->eventManager->fire(UserEvents::FAILURE_LOGIN, new UserLoginEvent($form, $user));
            return false;
        }
        $identity = new UserIdentity($form->email, $form->password);
        $duration = 0;
        if ($form->remember_me) {
            $sessionTimeInWeeks = (int) Yii::app()->getModule('user')->sessionLifeTime;
            $duration = $sessionTimeInWeeks * 24 * 60 * 60;
        }
        if ($identity->authenticate()) {
            Yii::app()->eventManager->fire(UserEvents::BEFORE_LOGIN, new UserLoginEvent($form, $user, $identity));
            $user->login($identity, $duration);
            Yii::log(Yii::t('UserModule.user', 'User with {email} was logined with IP-address {ip}!', ['{email}' => $form->email, '{ip}' => $request->getUserHostAddress()]), CLogger::LEVEL_INFO, UserModule::$logCategory);
            Yii::app()->eventManager->fire(UserEvents::SUCCESS_LOGIN, new UserLoginEvent($form, $user, $identity));
            return true;
        }
        Yii::app()->eventManager->fire(UserEvents::FAILURE_LOGIN, new UserLoginEvent($form, $user, $identity));
        Yii::log(Yii::t('UserModule.user', 'Authorization error with IP-address {ip}! email => {email}, Password => {password}!', ['{email}' => $form->email, '{password}' => $form->password, '{ip}' => $request->getUserHostAddress()]), CLogger::LEVEL_ERROR, UserModule::$logCategory);
        return false;
    }