[Li Jingshan php]daily laravel-20160906|Dispatcher-6

<code><span>/**
     * Broadcast the given event class.
     *
     *<span> @param</span>  \Illuminate\Contracts\Broadcasting\ShouldBroadcast  $event
     *<span> @return</span> void
     */</span><span>protected</span><span><span>function</span><span>broadcastEvent</span><span>(<span>$event</span>)</span>
    {</span><span>// why use this function name is broadcast</span><span>// event class means event instance</span><span>if</span> (<span>$this</span>->queueResolver) {<span>// use this queueResolver function</span><span>$connection</span> = <span>$event</span><span>instanceof</span> ShouldBroadcastNow ? <span>'sync'</span> : <span>null</span>;<span>// determine this instance about</span><span>$queue</span> = method_exists(<span>$event</span>, <span>'onQueue'</span>) ? <span>$event</span>->onQueue() : <span>null</span>;<span>// determine method_exits</span><span>$this</span>->resolveQueue()->connection(<span>$connection</span>)->pushOn(<span>$queue</span>, <span>'Illuminate\Broadcasting\BroadcastEvent'</span>, [
                <span>'event'</span> => serialize(<span>clone</span><span>$event</span>),
            ]);<span>// good look bad use ,maybe</span>
        }
    }

    <span>/**
     * Get all of the listeners for a given event name.
     *
     *<span> @param</span>  string  $eventName
     *<span> @return</span> array
     */</span><span>public</span><span><span>function</span><span>getListeners</span><span>(<span>$eventName</span>)</span>
    {</span><span>// Get all of the listeners for a given event name.</span><span>$wildcards</span> = <span>$this</span>->getWildcardListeners(<span>$eventName</span>);<span>// get the wild card by eventsName use this function ,that name is cardlisters</span><span>// first use eventName</span><span>if</span> (! <span>isset</span>(<span>$this</span>->sorted[<span>$eventName</span>])) {
            <span>$this</span>->sortListeners(<span>$eventName</span>);<span>// use this sort Listeners</span>
        }<span>// if isset eventsName never be sort ,</span><span>return</span> array_merge(<span>$this</span>->sorted[<span>$eventName</span>], <span>$wildcards</span>);<span>// array_merge</span>
    }

    <span>/**
     * Get the wildcard listeners for the event.
     *
     *<span> @param</span>  string  $eventName
     *<span> @return</span> array
     */</span><span>protected</span><span><span>function</span><span>getWildcardListeners</span><span>(<span>$eventName</span>)</span>
    {</span><span>$wildcards</span> = [];<span>// getWildcardListeners() set the listener</span><span>foreach</span> (<span>$this</span>->wildcards <span>as</span><span>$key</span> => <span>$listeners</span>) {<span>// foreach $this->wildcards as key</span><span>if</span> (Str::is(<span>$key</span>, <span>$eventName</span>)) {<span>// determine is a str</span><span>$wildcards</span> = array_merge(<span>$wildcards</span>, <span>$listeners</span>); <span>// get the array_merge</span>
            }
        }

        <span>return</span><span>$wildcards</span>;
    }
<span>// first get listener,second get the wildcard listener</span></code>

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