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sabre-event, a simple event management library for PHP 5.4

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sabre-event, a simple event management library for PHP 5.4

· Web Dev Zone ·
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Deploying code to production can be filled with uncertainty. Reduce the risks, and deploy earlier and more often. Download this free guide to learn more. Brought to you in partnership with Rollbar.

I just released version 1.0 of sabre-event, a simple event management library for PHP, heavily inspired by both nodejs' EventEmitter, and Igor Wielder's Événement.

This library has a few extra features not in Événement that I really needed, and Igor had no plans adding it to his library, so I wrote my own.

In a nutshell, this is how you use it:

<?php

use Sabre\Event\EventEmitter;

include 'vendor/autoload.php';

$eventEmitter = new EventEmitter();

// subscribing
$eventEmitter->on('create', function() {

    echo "Something got created, apparently\n"

});

$eventEmitter->emit('create');

?>

The EventEmitter object can also be integrated into existing objects, by extending it, or using it as a trait:

<?php

use Sabre\Event;

class MyNotUneventfulApplication implements Event\EventEmitterInterface
{

    use Event\EventEmitterTrait;

}

?>

It differs from Événement in two features:

  1. It's possible to prioritize listeners, and let them trigger earlier or later in the event chain.
  2. It's possible for listeners to break the event chain, much like javascript's preventDefault().

I hope it will be useful to others. You can find the full documentation on GitHub, and the preferred installation method is through Composer.

Deploying code to production can be filled with uncertainty. Reduce the risks, and deploy earlier and more often. Download this free guide to learn more. Brought to you in partnership with Rollbar.

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