decodelabs/eventful

Asynchronous IO event dispatcher

v0.3.4 2022-11-30 09:36 UTC

This package is auto-updated.

Last update: 2024-03-06 23:24:58 UTC


README

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Asynchronous IO event dispatcher for PHP

Eventful provides an extensible IO event dispatcher for use in interactive and asynchronous processes.

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Installation

Install the library via composer:

composer require decodelabs/eventful

Usage

Listen for events on IO, Signals and Timers and respond accordingly. If php's Event extension is available, that will be used, otherwise a basic select() loop fills in the gaps.

use DecodeLabs\Deliverance;
use DecodeLabs\Eventful\Factory;

$broker = Deliverance::newCliBroker();

$eventLoop = Factory::newDispatcher()

    // Run every 2 seconds
    ->bindTimer('timer1', 2, function() use($broker) {
        $broker->writeLine('Timer 1');
    })

    // Listen for reads, but frozen - won't activate until unfrozen
    ->bindStreamReadFrozen($input = $broker->getFirstInputReceiver(), function() use($broker) {
        $broker->writeLine('You said: '.$broker->readLine());
    })

    // Run once after 1 second
    ->bindTimerOnce('timer2', 1, function($binding) use($broker, $input) {
        $broker->writeLine('Timer 2');

        // Unfreeze io reads
        $binding->eventLoop->unfreeze($intput);
    })

    // Check if we want to bail every second
    ->setCycleHandler(function(int $cycles) {
        if($cycles > 10) {
            return false;
        }
    });


/*
Outputs something like:

Timer 2
Timer 1
Timer 1
You said: Hello world
Timer 1
*/

Licensing

Eventful is licensed under the MIT License. See LICENSE for the full license text.