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  • PHP EVENT简单code

    一个PHP的event 简单的demo。

    <?php
    class Event
    {
        private static $events = [];
    
        public static function listen($name, $callback)
        {
            self::$events[$name][] = $callback;
        }
    
        public static function trigger($name, $argument = null)
        {
            foreach (self::$events[$name] as $event => $callback) {
                if ($argument && is_array($argument)) {
                    call_user_func_array($callback, $argument);
                } elseif ($argument && !is_array($argument)) {
                    call_user_func($callback, $argument);
                } else {
                    call_user_func($callback);
                }
            }
        }
    }
    
    class User
    {
        public function login()
        {
            return true;
        }
    
        public function logout()
        {
            return true;
        }
    
        public function updated()
        {
            return true;
        }
    }
    
    // Usage
    // ==================================
    
    Event::listen('login', function () {
        echo 'Event user login fired! <br>';
    });
    
    
    Event::listen('login', function () {
        echo 'Event user login hhhh! <br>';
    });
    
    
    $user = new User();
    
    if ($user->login()) {
        Event::trigger('login');
    }
    
    // Usage with param
    // ==================================
    
    Event::listen('logout', function ($param) {
        echo 'Event '. $param .' logout fired! <br>';
    });
    
    if ($user->logout()) {
        Event::trigger('logout', 'user');
    }
    
    
    // Usage with param as array
    // ==================================
    
    Event::listen('updated', function ($param1, $param2) {
        echo 'Event ('. $param1 .', '. $param2 .') updated fired! <br>';
    });
    
    if ($user->updated()) {
        Event::trigger('updated', ['param1', 'param2']);
    }
    
    
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  • 原文地址:https://www.cnblogs.com/roverliang/p/12222113.html
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