場景

使用者評論成功後可以靈活配置選用GMAIL、qq或其他郵箱傳送郵件。

檔案功能

• EmailSenderInterface.php 郵件服務定義介面
• GmailSender.php gmail類實現EmailSenderInterface
• QqSender.php qq類實現EmailSenderInterface
• Comment.php 評論類
• DiController.php 測試演示控制器

程式碼實現

EmailSenderInterface.php

<?php
/**
 * 為郵件服務定義介面
 */

namespace backend\di\yii;
interface EmailSenderInterface
{
    public
 
 function send();
}

GmailSender.php

<?php
/**
 * Gmail郵件服務
 */
namespace backend\di\yii;
use backend\di\yii\EmailSenderInterface;

class GmailSender implements EmailSenderInterface {
    public function send()
    {
        echo '使用gmail傳送';
    }
}

QqSender.php

<?php
/**
 * qq郵件服務
 */
namespace
 
 backend\di\yii;
use backend\di\yii\EmailSenderInterface;

class QqSender implements EmailSenderInterface {
    public function send()
    {
        echo '使用qq傳送';
    }
}

Comment.php

<?php
namespace backend\di\yii;

use backend\di\yii\EmailSenderInterface;

class Comment {

    private $_eMailSender
 
;

    public function __construct(EmailSenderInterface $emailSender) {
        $this->_eMailSender = $emailSender;
    }

    public function sendEmail() {
        $this->_eMailSender->send();
    }

}

DiController.php

<?php

namespace backend\controllers;

use Yii;
use yii\di\Container;
class DiController extends \yii\web\Controller{

    public function actionIndex(){
        $container = new Container;
        $container->set('backend\di\yii\EmailSenderInterface',['class'=>'backend\di\yii\GmailSender']);
        $comment=$container->get('backend\di\yii\Comment');
        $comment->sendEmail();
    }

}

執行

若要使用qq郵箱傳送，只需更改DiController.php更改註冊依賴關係即可：

        $container->set('backend\di\yii\EmailSenderInterface',['class'=>'backend\di\yii\QqSender']);

執行如下：