??? ????? ???? ???? ????? ??? ?? ? ??? ????.

1. ????? ??

1 ?? ??? ??: ??? ???? ????? ?? ????? ???

php? ?????. make:listener

?:

php make:listener UserListener

? ?? ? applistener下生成UserListener ???? ?? ???? ?????.

2. ?? ??: appevent.php ??? ?? ???? ??? ?? UserListener ???? ?????.

'listen' => applistenerUserListener']
],

3. ?? ???: ??? ????? ?? ?? ?? ??? ?????

event('testEvent');

??: ???? testEvent ????? ???? ??? ? ?? ??? ????? event.php? ?? ??? ??? ? ??? ?????.

????? ??? ? ? ?? ????? ??? ? ????. ?? ???? ????? ? ?? ????? ?? UserListener ???? ?? ???? ??? ? ????. (??? ????? ???? ??? ?? ?? ?? ??? ?? ????? ????.)

4. ?? ?? ??: UserListener ???? ?? ????? ???? ?? ??

?? ??? ??? ????.

Other: ???? ???? ???

<?php
namespace app\controller;
class Other
{
    public function hello()
    {
        echo &#39;hello function&#39;;
    }
}

Index: ??? ????? ???

 
UserListener: ??? ?? ??? 
<?php
namespace app\listener;
class UserListener
{
    /**
     * 事件監(jiān)聽處理
     *
     * @return mixed
     */
    public function handle($event)
    {
        //當調(diào)用Index類的test1方法時該代碼有效，$event為null
        var_dump($event);
        //當調(diào)用Index類的test2方法時該代碼有效，$event為字符串hello
        var_dump($event);
        //當調(diào)用Index類的test3方法時該代碼有效，$event為Index類的實例
        //可以訪問Index類的name變量
        echo $event->name;
        //當調(diào)用Index類的test4方法時該代碼有效，$event為Other類的實例
        //可以調(diào)用Other類的hello方法
        echo $event->hello();
    }
}
2. ??? ??
1. ?? ???? ?????
????? ??? ???? ????? ?? ????? ?????.
php make:subscribe 
 
?: 
 
php think make:subscribe UserSubscribe
?? ? UserSubscribe ???? appsubscribe ??? ?????. 
2. ???? ??
appevent.php ??? ?? ???? UserSubscribe ???? ??? ?? ?????. 
'subscribe' => ['appsubscribeUserSubscribe'],
 ??: ??? ?????? ??? ??? UserListener? Listen ???? ???? ???
3. Trigger listening
? ?? ??? ??
4. Listening ??? ???? ???? ? ??? ????. ??? ?? ???? ?? ?????? ????. ?? ???? ?? ???? ?? ?????? ? ? ??? ??? ? ????. 
4.1 ?? ???
???? ??? ???? ontestEvent ???? UserSubscribe ???? ???? ???. ???? ??? ??? ??? ??? ? ???, ??? ?? ?? ???? ?? ???? ???. event.php?? ??? ??? ??? testEvent??? ??? ??? ontestEvent???(???? ??). Listening ???? ??? ??? ???? ???? ?????? ?? ?????? ???. 
?? ??? ??? ????
Other ? Index ???? ??? ? ?? ?? ??? ?????.
UserSubscribe: ??? ?? ???
<?php
namespace app\subscribe;
class UserSubscribe
{
    public function ontestEvent($user)
    {
        //當調(diào)用Index類的test1方法時該代碼有效，$event為null
        var_dump($user);
        //當調(diào)用Index類的test2方法時該代碼有效，$event為字符串hello
        var_dump($user);
        //當調(diào)用Index類的test3方法時該代碼有效，$event為Index類的實例
        //可以訪問Index類的name變量
        echo $user->name;
        //當調(diào)用Index類的test4方法時該代碼有效，$event為Other類的實例
        //可以調(diào)用Other類的hello方法
        echo $user->hello();
    }
}
4.2 ?? ???
?? ??? ???? ??? ???? ????. ?? ???? ??. ??? ???? ????? ?? ????? ???? ?????. 
php think make:event 
?: 
php think make:event UserEvent
?? ? < ;The UserEvent ???? ????? ?? ????>appevent ??? ?????. 
 ?? ?? ? ???? ???? ????? ?? ?? ???? ?????. ??? ??? ???? ???? ??? ??? ??? ? ????. ?? ???? ??? ?? ????? ??? ? ????. 
????, Event ??? ????? ??? ?? ?? ???? UserSubscribe ???? ?????. ?? ?? ??? ???? ? ??? ?? UserEvent ???? ?? ???? ??????. 
$event->listen(&#39;testEvent&#39;, [app(&#39;app\event\UserEvent&#39;), &#39;handle&#39;]);
?? ??? ??? ????
Other ? Index ???? ??? ? ?? ?? ??? ?????.
UserSubscribe: ??? ?? ???
UserEvent: ??? ?? ???
<?php
declare (strict_types = 1);
namespace app\event;
class UserEvent
{
    public function handle($user)
    {
        //當調(diào)用Index類的test1方法時該代碼有效，$user為null
        var_dump($user);
        //當調(diào)用Index類的test2方法時該代碼有效，$user為字符串hello
        var_dump($user);
        //當調(diào)用Index類的test3方法時該代碼有效，$user為Index類的實例
        //可以訪問Index類的name變量
        echo $user->name;
        //當調(diào)用Index類的test4方法時該代碼有效，$user為Other類的實例
        //可以調(diào)用Other類的hello方法
        echo $user->hello();
    }
}
? ??? Thinkphp ??? ????? ???? ??? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!