[李景山php]每天laravel-20160903|Dispatcher-3

/**
* Setup a wildcard listener callback.
*
* @param  string  $event
* @param  mixed  $listener
* @return void
*/
protected function setupWildcardListen($event, $listener)
{
$this->wildcards[$event][] = $this->makeListener($listener);
}// this is a wildcard be you life !
// this means is very good, setup the wildcard listener use the events as the key,
// and use this function make Listener to wrap this listener

/**
* Determine if a given event has listeners.
*
* @param  string  $eventName
* @return bool
*/
public function hasListeners($eventName)
{
return isset($this->listeners[$eventName]) || isset($this->wildcards[$eventName]);
}// Determine if a given event has listeners
// check it is has listeners ,means to check it has listener or has wildcards

/**
* Register an event and payload to be fired later.
*
* @param  string  $event
* @param  array  $payload
* @return void
*/
public function push($event, $payload = [])// register like push,not like pop
{
$this->listen($event.'_pushed', function () use ($event, $payload) {
$this->fire($event, $payload);
});// set the event ,use function listen and fire
}// load is loading.... pay  buy something for this
// goods carried by a large vehicle
// a large vehicle has the big goods carried

/**
* Register an event subscriber with the dispatcher.
*
* @param  object|string  $subscriber
* @return void
*/
public function subscribe($subscriber)
{// function name is subscribe
$subscriber = $this->resolveSubscriber($subscriber);// get the resolve

$subscriber->subscribe($this);// too much
}// register a use about this event in the dispatcher rule.