triggerFilter in Event

I added below new method code in Events\Events.php

PHP Code:

   /**
     * Runs through all subscribed methods running them one at a time,
     * until either:
     *  a) All subscribers have finished or
     *  b) a method returns false, at which point execution of subscribers stops.
     *
     * @param $eventName
     * @param $value
     * @param $arguments
     *
     * @return mixed
     */
    public static function triggerFilter($eventName, $value, ...$arguments)
    {
        // Read in our Config/events file so that we have them all!
        if ( ! self::$initialized) {
            self::initialize();
        }

        $listeners = self::listeners($eventName);

        foreach ($listeners as $listener) {
            $start = microtime(true);

            $value = static::$simulate === false
                ? $listener($value, ...$arguments)
                : true;

            if (CI_DEBUG) {
                static::$performanceLog[] = [
                    'start' => $start,
                    'end' => microtime(true),
                    'event' => strtolower($eventName)
                ];
            }

            if ($value === false) {
                return false;
            }
        }

        return $value;
    } 


PHP Code:

    public function test_method()
    {
        $data = [
            'raw1' => 'Before Text',
            'raw2' => 'aaaa1234',
        ];

        \CodeIgniter\Events\Events::on('test_event1', function ($value, $data2, $data3) {
            $value['raw1'] = 'After event~!';
            $value['raw2'] = strtoupper($value['raw2']) . $data2;

            return $value;
        }, EVENT_PRIORITY_HIGH);

        \CodeIgniter\Events\Events::on('test_event1', function ($value, $data2, $data3) {
            $value['raw1'] = $value['raw1'] . ' // One more!';
            $value['raw2'] = $value['raw2'] . $data3;

            return $value;
        }, EVENT_PRIORITY_NORMAL);

        $data2 = \CodeIgniter\Events\Events::triggerFilter('test_event1', $data, '_TITLE', '_SUBJECT');

        var_dump( $data );
        echo '<br>';
        var_dump( $data2 );

        ///////////////

        \CodeIgniter\Events\Events::on('another_event', function ($value) {
            $value['raw1'] = 'After event~!';
            $value['raw2'] = strtoupper($value['raw2']) . ' First';

            return $value;
        }, EVENT_PRIORITY_HIGH);

        \CodeIgniter\Events\Events::on('another_event', function ($value) {
            $value['raw1'] = $value['raw1'] . ' // One More!';
            $value['raw2'] = $value['raw2'] . ' Second';

            return $value;
        }, EVENT_PRIORITY_NORMAL);

        $data2 = \CodeIgniter\Events\Events::triggerFilter('another_event', $data);

        echo '<br>';
        var_dump( $data );
        echo '<br>';
        var_dump( $data2 );
    } 


Because I need something similar to the filter that Wordpress uses.
What do you think about this?  Please, let me know your opinions.

Interesting idea, but it has a very real problem that filters expect to be able to modify the request/response or return their own response, and calling a filter within an event negates all of those abilities.

The filter you are trying to replicate from Wordpress is fundamentally different enough from the Controller Filters that CI provides that I don't think they're compatible.

To allow filters on content, you'd be better served creating something new and specific for that use, I think.

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Interesting idea, but it has a very real problem that filters expect to be able to modify the request/response or return their own response, and calling a filter within an event negates all of those abilities.

The filter you are trying to replicate from Wordpress is fundamentally different enough from the Controller Filters that CI provides that I don't think they're compatible.

To allow filters on content, you'd be better served creating something new and specific for that use, I think.

Thank you for your opinion.

For now, I think I'll have to use above code I added. 
That is a quite simple way, if there isn't another simple awesome way.

By the way, CI4 Events concept is very nice. I think this is similar to Action (Hook) concept of WordPress.
So, I just added that triggerFilter (Filter Hook) function.