[PHP] Eventos y Disparadores

event.class.php

<?php
/**
 *
 * Eventos y Disparadores
 * @author  Nicolás Giacaman <[email protected]>
 * @url     http://nicolasg.cf
 * @fork    https://gist.github.com/im4aLL/548c11c56dbc7267a2fe96bda6ed348b
 *
 */

class Event {

    protected static $_X = [];

    public static function Create($ID = '', $Func = '') {
        try {
            if(empty($ID) OR empty($Func))
                throw new Exception("ID o Func Vacios!!");

            if(isset(self::$_X[$ID]))
                throw new Exception("{$ID} :: Ya existe.");

            self::$_X[$ID] = $Func;
        }
        catch (Exception $_E) {
            echo '<b>[Event::Create]</b> '.$_E->getMessage();
        }
    }

    public static function Trigger($ID = '') {
        try {
            if(empty($ID))
                throw new Exception("ID Vacio!!");
            
            @$Func = self::$_X[$ID];
            if(isset($Func)) {
                if(is_callable($Func)) {
                    $Args = func_get_args();
                    array_shift($Args);
                    if(call_user_func_array($Func, $Args) === FALSE)
                        throw new Exception("{$ID} :: Error Callback.");
                }
            }
        
        }
        catch (Exception $_E) {
            echo '<b>[Event::Trigger]</b> '.$_E->getMessage();
        }
    }
}

// -- DEMO --

Event::Create('demo1', function($X, $Y) {
    echo $X + $Y;
});

Event::Create('demo2', function($X, $Y) {
    echo $X * $Y;
});

// -----

Event::Trigger('demo2', 2, 5);
Event::Trigger('demo3', 2, 5);

?>