libSSE-php

An easy-to-use, object-oriented library for Server-Sent Events

Installation

To install this package you'll need composer.

Run composer require tonyhhyip/sse

Usage

Server-side(PHP):

<?phprequire_once('/path/to/vendor/autoload.php'); //Load with ClassLoaderuseSse\Event;
useSse\SSE;
//create the event handlerclass YourEventHandler implements Event {
publicfunctionupdate(){
//Here's the place to send datareturn'Hello, world!';
}
publicfunctioncheck(){
//Here's the place to check when the data needs updatereturntrue;
}
}
$sse = newSSE(); //create a libSSE instance$sse->addEventListener('event_name', newYourEventHandler());//register your event handler$sse->start();//start the event loop?>

Client-side(javascript):

varsse=newEventSource('path/to/your/sse/script.php');sse.addEventListener('event_name',function(e){vardata=e.data;//handle your data here},false);

Settings

After you created the libSSE instance, there's some settings for you to control the behaviour. Below is the settings provided by the library.

<?phprequire_once('/path/to/vendor/autoload.php'); //Load with ClassLoaderuseSse\SSE;
$sse = newSSE();
$sse->set($property, $value);

Direct access of property is kept with magic method for backward compatible.

<?phprequire_once('/path/to/vendor/autoload.php'); //Load with ClassLoaderuseSse\SSE;
$sse = newSSE();
$sse->exec_limit = 10; //the execution time of the loop in seconds. Default: 600. Set to 0 to allow the script to run as long as possible.$sse->sleep_time = 1; //The time to sleep after the data has been sent in seconds. Default: 0.5.$sse->client_reconnect = 10; //the time for the client to reconnect after the connection has lost in seconds. Default: 1.$sse->use_chunked_encoding = true; //Use chunked encoding. Some server may get problems with this and it defaults to false$sse->keep_alive_time = 600; //The interval of sending a signal to keep the connection alive. Default: 300 seconds.$sse->allow_cors = true; //Allow cross-domain access? Default: false. If you want others to access this must set to true.?>

Updates

1. Add Support of Symfony Http Foundation Compoent
2. SSE use magic method instead of direct access
3. Add Redis and Memcahce Mechnism
4. Add SessionLike Mechnism
5. Fixed event loop handling where removing handlers at runtime can result in a broken state.
6. Use Symfony HttpFoundation StreamedResponse to replace the old version
7. Add Changelog and contributing guide.

Special For PHP 5.3 and 5.4

If you see and error message like your PHP version does not satisfy that requirement., please remove composer.lock and re-install it.

Documentation

You may find it here. https://github.com/licson0729/libSSE-php/wiki/libSSE-docs

Development

This is an active project. If you want to help me please suggest ideas to me and track issues or find bugs. If you like it, please consider star it to let more people know.

Compatibility

Because server-sent events is a new standard and still in flux, only certain browsers support it. However, polyfill for server-sent events is available. Also on shared hosting, it may disable PHP's set_time_limit function and the library may not work as excepted. There's some settings in the library that can fix it.

Integration with Frameworks

Symfony

<?phpuseSymfony\Bundle\FrameworkBundle\Controller\Controller;
useSensio\Bundle\FrameworkExtraBundle\Configuration\Route;
useSse\SSE;
class DefaultController extends Controller
{
/** * @Route("/sse", name="sse") */publicfunctionsseAction()
{
$sse = newSSE();
// Add your event listenerreturn$sse->createResponse();
}
}

Laravel

Please use laravel-sse.

Yii2

Please use yii2-sse.

Contribution

Please see the CONTRIBUTING.md.