NOTE: This package is no longer maintained. Use react/promise instead!
Async utilities for React.
It is heavily influenced by async.js.
This library allows you to manage async control flow. It provides a number of combinators for continuation-passing style (aka callbacks). Instead of nesting those callbacks, you can declare them as a list, which is resolved sequentially in an async manner.
React/Async will not automagically change blocking code to be async. You need
to have an actual event loop and non-blocking libraries interacting with that
event loop for it to work. You can use react/event-loop for this, but you
don't have to. As long as you have a callback-based API that runs in an event
loop, it can be used with this library.
You must be running inside an event loop for react/async to make any sense whatsoever!
The recommended way to install react/async is through composer.
{
"require": {
"react/async": "~1.0"
}
}<?php
use React\Async\Util as Async;
$loop = React\EventLoop\Factory::create();
Async::parallel(
array(
function ($callback, $errback) use ($loop) {
$loop->addTimer(1, function () use ($callback) {
$callback('Slept for a whole second');
});
},
function ($callback, $errback) use ($loop) {
$loop->addTimer(1, function () use ($callback) {
$callback('Slept for another whole second');
});
},
function ($callback, $errback) use ($loop) {
$loop->addTimer(1, function () use ($callback) {
$callback('Slept for yet another whole second');
});
},
),
function (array $results) {
foreach ($results as $result) {
var_dump($result);
}
},
function (\Exception $e) {
throw $e;
}
);
$loop->run();<?php
use React\Async\Util as Async;
$loop = React\EventLoop\Factory::create();
$addOne = function ($prev, $callback = null) use ($loop) {
if (!$callback) {
$callback = $prev;
$prev = 0;
}
$loop->addTimer(1, function () use ($prev, $callback) {
$callback($prev + 1);
});
};
Async::waterfall(array(
$addOne,
$addOne,
$addOne,
function ($prev, $callback) use ($loop) {
echo "Final result is $prev\n";
$callback();
},
));
$loop->run();- Implement queue()
To run the test suite, you need PHPUnit.
$ phpunit
MIT, see LICENSE.