Yii Framework: Send mail Japanese.

sample.php

<?php

/* protected/config/main.php
-----------------------------------------------------------*/
return array(
    ...
    'components' => array(
        'mailer' => array(
            'class' => 'ext.mailer.EMailer',
            'CharSet' => 'iso-2022-jp',
            'Encoding' => '7bit',
        ),
        ...

/* protected/modules/user/UserModule.php
-----------------------------------------------------------*/
class UserModule extends CWebModule
{
    ...
    
    /**
     * メール送信
     * @param string $email メールアドレス
     * @param string $subect 件名
     * @param string $view テンプレート名
     * @param array $vars テンプレートで使用する変数
     */
    public static function sendMail($email, $subject, $view , $vars = array())
    {
        mb_language('Japanese');
        mb_internal_encoding(Yii::app()->charset);
        
        $mailer =& Yii::app()->mailer;
        $mailer->addAddress($email);
        $mailer->From = Yii::app()->params['adminEmail'];
        $mailer->FromName = mb_encode_mimeheader(Yii::app()->name);
        $mailer->Subject = mb_encode_mimeheader($subject);
        $mailer->getView($view, $vars);
        $mailer->Body = mb_convert_encoding($mailer->Body, $mailer->CharSet);
        $mailer->send();
    }
}

/* protected/modules/user/controllers/RegisterController.php
-----------------------------------------------------------*/
class RegisterController extends Controller
{
    ...
    public function actionRegister()
    {
        ...
        
        $subject = Yii::app()->name . 'からユーザ登録のお知らせ';
        UserModule::sendMail($model->email, $subject, 'register', array('activkey' => $model->activkey));
        
        ...