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Package loop
Short Description A solid event-loop API for writing applications that work across frameworks such as Amp or React, Slim, CodeIgniter, Laravel and Symfony.
License MIT
Homepage https://github.com/moebiusphp/loop
Informations about the package loop
Moebius\Loop
An event-loop API for writing asynchronous code in traditional PHP code, while also working seamlessly with common asynchronous frameworks like React or Amp.
Moebius Loop provides an elegant and consistent API for working with non-blocking I/O which works equally well in classic synchronous PHP code as with fully asynchronous frameworks like React or Amp.
Laravel example
Moebius\Loop can be used with most frameworks such as Laravel or Symfony. The only challenge with using asynchronous code with these frameworks, is that the framework will not wait for your promises to finish.
The solution is to use the Moebius\Loop::await($promise)
function. As long as all the code that is asynchronous is
written to use Moebius\Loop
directly, or written for either
React or Amp - then you can use Moebius\Loop
to resolve the
promise.
As you can see, it is easy to use asynchronous code within any framework.
API reference
Moebius\Loop::getTime()
Get the current event loop time. This is a time indicating a number of seconds from an arbitrary point in time.
Moebius\Loop::await(object $promise, float $timeout=null): mixed
Run the event loop until the promise resolves or the timeout is reached.
Moebius\Loop::run(Closure $shouldResumeFunc=null): void
Run the event loop until Moebius\Loop::stop()
is called. If a
callback is provided, the loop will keep running until the callback
returns a falsey value.
Moebius\Loop::delay(float $time, Closure $callback): Closure
Run the callback after $time
seconds have passed. The returned
callback will abort the timer.
Moebius\Loop::interval(float $interval, Closure $callback): Closure
Run the callback after $interval
seconds have passed, and keep
repeating the callback every $interval
second. The returned callback
will abort the interval.
Moebius\Loop::readable(resource $resource, Closure $callback): Closure
Run the callback on every tick as long as reading from the stream resource will not block. This can also be used to accept new connections on a server socket. The returned callback will abort watching the stream.
Moebius\Loop::writable(resource $resource, Closure $callback): Closure
Run the callback on every tick as long as writing to the stream resource will not block. The returned callback will abort watching the stream.
Moebius\Loop::read(resource $resource, Closure $callback): Closure
Read a chunk of data from the stream resource and call the $callback
with the chunk of data that was read. This function will stop as soon
as EOF is called, unless the returned callback is called to abort the
read operation first.
Moebius\Loop::signal(int $signalNumber, Closure $callback): Closure
Run the callback whenever a signal is received by the process. The callback will continue to be called every time the signal is received, until the returned callback is invoked.
Example
A primitive example to illustrate how to write asynchronous
code with Moebius\Loop
.
This code will run with both Amp and React, and if you are not using one of these in a more classic environment such as Laravel or Symfony.
The entire API
Moebius\Loop::defer(callable $callback)
will schedule callback
to be executed next.
Moebius\Loop::queueMicrotask(callable $callback)
will schedule
a callback to be executed as soon as possible - before any
deferred callbacks.
Moebius\Loop::delay(float $time, callable $callback): EventHandle
will schedule a callback to be executed later.
Moebius\Loop::readable(resource $fd, callable $callback): EventHandle
will schedule a callback to be executed whenever $fd
becomes
readable.
Moebius\Loop::writable(resource $fd, callable $callback): EventHandle
will schedule a callback to be executed whenever $fd
becomes
writable.
Moebius\Loop::signal(int $signum, callable $callback): EventHandle
will schedule a callback to be executed whenever the application
receives a signal.
Moebius\Loop::run(callable $keepRunningFunc=null): void
will run
the event loop until the $keepRunningFunc
returns false or
the event loop is empty.
EventHandle class
When subscribing to events (IO, timer, interval or signal) you will receive an EventHandle class. This handle can be used to suspend or cancel the event listener.
Example:
All versions of loop with dependencies
composer/semver Version ^3.3
charm/fallback-logger Version ^1.0
moebius/common Version ^1.0
charm/util-closuretool Version ^1.0