Two ways to use ThinkPHP8 events

//Defining a custom Event class is not necessarily an event class, it is OK for ordinary classes, but using event class architecture is clearer



//The following will generate a UserLogin event class in the directory app\event



php think make:event UserLogin

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Write the code as follows:

namespace app\event;



class UserLogin



{



    //Hand method name and parameters are customized




    public function sendMessage($param)




    {



        //Processing code




        echo('sendmessage');



    }



}

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class UserLoginSubscribe



{



    // Manual event subscription, the method name must be subscribe, and add events to the event subscriber in the function




    public function subscribe(Event $event)




    {



        //Add events to subscriber The first parameter is the event identifier, write casually, the second parameter is the event class and the executed function




        $event->listen('UserLogin',[app('app\event\UserLogin'),'sendMessage']);



 



        //You can also dynamically modify the event logo for the automatic identification function onLogout. The original logo is Logout, but now it is changed to Out




        //$event->listen('Out', [$this,'onUserLogout']);




    }



 



}

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return [



    'subscribe'    =>    [



       'app\subscribe\UserLoginSubscribe',



        // More event subscriptions




    ],



];

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//Call, the event identifier is the first parameter of $event->listen('UserLogin',[app('app\event\UserLogin'),'sendMessage'])




event('UserLogin');

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