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Gonzalo Ayuso:
Building TCP server daemond with PHP and Rachet
April 13, 2015 @ 10:18:41

Gonzalo Ayuso has a new post to his site today showing how to create a TCP server daemon with PHP with help from the Ratchet toolset. Ratchet is a library that makes it easier to work with WebSockets directly from PHP.

In my daily work I normally play a lot with TCP servers, clients and things like that. I like to use Linux's xinet.d daemon to handle the TCP ports. I've also written something about it. This approach works fine. The problem appears when we call intensively our xinet.d server. It creates one PHP instance per request. It isn't a problem with one request in, for example, 3 seconds, but if we need to handle 10 requests per second our server load will grow. The solution: a dedicated server.

In a setup similar to how Silex registers callbacks, he's created a PHP-based server that listens on whatever ports are defined for incoming connections and processes the data accordingly. He includes several code samples that show it in use, both in simple request handling and more complex configurations based off of a YAML file definition. He ends the post with a method he uses to "emulate" threading in his processing with the help of a Silex app and HTTP requests to hand off the processed and remove the blocking problem PHP introduces.

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Link: http://gonzalo123.com/2015/04/13/building-tcp-server-daemon-with-php-and-rachet/

SitePoint PHP Blog:
Integrate Elasticsearch with Silex
April 13, 2015 @ 08:38:55

The SitePoint PHP blog has continued their look at integrating Elasticsearch into a simple Silex-based PHP application. In this latest part of the series (part two) they move away from the full Drupal example in part one and go a bit more simple and create a basic site to show a node's detail (content and title).

In the previous article I started exploring the integration between Drupal 7 and the Elasticsearch engine. The goal was to see how we can combine these open source technologies to achieve a high performance application that uses the best of both worlds. [...] We'll now create a small Silex application that reads data straight from Elasticsearch and returns it to the user.

Using Silex and the same Elasticsearch PHP SDK they create this simple site. The tutorial walks you through the installation of both tools, the configuration of the Elasticsearch client and creating the controllers to respond to the view requests. They also show how to use the Twig templating engine to render the results as a simple page containing the node title, any images attached to it and the body content. The tutorial ends with a brief mention of how this same data could also be rendered as JSON output with a different view handler.

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Link: http://www.sitepoint.com/integrate-elasticsearch-silex/

SitePoint PHP Blog:
Introduction to Silex - A Symfony Micro-framework
February 20, 2015 @ 12:31:40

The SitePoint PHP blog has a tutorial posted today introducing you to one of the more popular PHP microframeworks out there, Silex. This new article jumps right in and shows you how to use it.

Silex is a PHP micro-framework based on Symfony components and inspired by the Sinatra Ruby framework. In this article, we are going to get started with the framework and see the how it fits our needs.

He walks you through the installation of Silex (and Twig) through Composer and the creation of the basic folder structure to build the first app. He then gets into talking about how routes are handled, parameters and linking controllers to routes. He also introduces the use of providers and shows how to implement the one for Twig to use in templating the output of the application.

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Link: http://www.sitepoint.com/introduction-silex-symfony-micro-framework/

SitePoint PHP Blog:
3 Ways to Implement Embeddable Custom Badges
December 29, 2014 @ 09:12:38

The SitePoint PHP blog has a recent tutorial showing you how you can use one of three different ways to embed badges into your site. These "badges" are a common practice among sites allowing other sites/applications to embed small statistics such as number of Tweets or Likes about a page.

One great way of organically promoting your application is to provide "badges"; snippets of content that people can embed on their own websites. [...] This can contain up-to-the-minute information from your application about a user, piece of content or another object, dynamically generated and inserted into other websites. In this article I'm going to take a look at some of the ways you can implement this.

He walks you through the creation of a simple application based on Silex, using Twig for template rendering and the WideImage library for creating the images. His datastore, a static array, lists an image, rank and number of "trophies" for each user of the system. He creates a main page showing all of the badges at once, making use of an "iframe" to contain the dynamically created image. He shows how to use the WideImage library to pull in the background, avatar and trophy images, merge them together and add a bit of text with the username and level ranking. Finally he includes the Javascript needed so the remote site can just use a "script" tag to pull in the rendered image and place it on their page.

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tutorial badge embed javascript iframe silex twig wideimage

Link: http://www.sitepoint.com/3-ways-implement-embeddable-custom-badges/

Imagine Easy Solutions Blog:
Testing Logging in Silex
November 12, 2014 @ 11:34:50

On the Imagine Easy Solutions blog Yitzchak Schaffer talks some about logging in Silex by making use of a MonologServiceProvider. You can find the end result of his setup in this GitHub repository.

Silex is a PHP microframework from the same family as Symfony. My shop, Imagine Easy Solutions, uses Silex for some of our most important applications. Modular setup is at the core of Silex's game, by means of Service Providers. The MonologServiceProvider makes it easy to add highly configurable logging to your application. But how to test your logging? It turns out that this Service Provider includes a DebugHandler which you can use to make log entries available in array form.

He walks you through the integration of the service provider via a "debug handler" and configuring it in the setup method. He also includes an "assertLogEntry" method to evaluate the current logs and check to ensure an entry was made. Finally, he puts it to use via a "notOk" method.

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test logging silex serviceprovider monolog tutorial

Link: http://dev.imagineeasy.com/post/102394035784/testing-logging-in-silex

Gonzalo Ayuso:
Token based authentication with Silex and AngularJS
June 09, 2014 @ 10:33:37

Gonzalo Ayuso has posted a tutorial showing how to use token-based authentication with a Silex-based application through a request from AngularJS.

According to my last post today we're going to create a AngularJS application that uses the Silex Backend that we create previously. The idea of this application is to use it within a Phonegap/Cordova application running in a mobile device.

He includes the code (and markup) you'll need to make the request work. Basically, it uses a standard HTTP service from inside AngularJS to fetch the token and store it in the client's localstorage. The rest of the code does the checking to see if the user is logged in (the token exists) or if it needs to sow the login form. The "logged in" route also displays an alert to the user with the info (pulled from the API) for their user. The full code for the example can be found over on GitHub.

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Link: http://gonzalo123.com/2014/06/09/token-based-authentication-with-silex-and-angularjs/

Gonzalo Ayuso:
Token based authentication with Silex Applications
May 06, 2014 @ 10:56:32

Gonzalo Ayuso has put together a new post for his site showing how to do token-based authentication with Silex and the help of a few additional Symfony components.

What happens if we want to use a security layer [in a Silex application]? We can use sessions. Sessions are the "standard" way to perform authentication in web applications, but when our application is a PhoneGap/Cordova application that uses a Silex server as API server, sessions aren't the best way. The best way now is a token based authentication. The idea is simple. First we need a valid token. Our API server will give us a valid token if we send valid credentials in a login form. Then we need to send the token with each request (the same way than we send the session cookie with each request).

He includes all the code you'll need to follow along. His example shows a basic Silex application that fetches the token from the URL and uses middleware to handle the validation. There's a bit of CORS mixed in as well to make the cross-domain requests from the applications possible. He creates a service provider (for logins) and controller provider to handle each type of request.

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token authentication silex application tutorial

Link: http://gonzalo123.com/2014/05/05/token-based-authentication-with-silex-applications/

Stephan Hochdörfer:
Silex running on HHVM
April 09, 2014 @ 09:14:12

Stephan Hochdörfer has a quick new post to his site today showing how he was able to setup a Silex-based application to run on the HHVM (HipHopVM) from Facebook.

First of all I assume you already got HHVM running with nginx. If this is not the case feel free to follow these steps to get everything up and running. To install Silex we will use Composer, so let`s install all the needed requirements and Composer itself.

He includes all the commands you'll need to get the Composer dependencies installed (curl, git, unzip) and to pull it down and move it to the right location post-install. He adds a line to his ".bashrc" to enable it for HHVM and creates the sample "composer.json" for the Silex install. Finally, he includes the updates to make to the nginx configuration to handle the needed redirects to the Silex front controller.

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Link: http://blog.bitexpert.de/blog/silex-running-on-hhvm/

Gonzalo Ayuso:
Integrating WebSockets with PHP applications. Silex and socket.io playing together.
February 04, 2014 @ 09:37:25

Gonzalo Ayuso has a new post today showing you how you can integrate websockets with a PHP application using a combination of Silex and socket.io, a javascript library specifically made to work with them.

WebSockets are great. We can start a persistent connection from our browser to our server and use this connection to send real time notifications to our users. Normally when we integrate WebSockets with an existing Web application, we need to face with one slight problem. Our Web application runs on a Web server (imagine, for example one Silex application). We can use a login form and ensure all requests are authorized (using a security layer). This problem is solved years ago. We can use Basic HTTP authentification, Digtest authentification, a session based athentification, token based authentificatio, OAuth, The problem arrives when we add WebSocket server.

He mentions another solution - sharing an authentication mechanism between the frontend and backaned - but suggests something simpler using the bi-directional nature of websockets. To illustrate, he makes a simple Silex application and creates a basic template that makes the websocket request back to the localhost. He includes the simple code to make the socket.io server (node.js) and an example of using Express to handle the request and define the URL to call on the Silex application. He's also created a screencast showing the full process, start to finish.

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Link: http://gonzalo123.com/2013/12/24/integrating-websockets-with-php-applications-silex-and-socket-io-playing-together

David Makin:
Creating a simple REST application with Silex part 2
January 24, 2014 @ 12:17:35

David Makin has posted the second part of his series looking at creating a simple REST API with the help of Silex. You can find part one here to get caught up.

In part 1 you installed Silex and setup 2 routes, / and /{stockcode}. Now lets expand upon those by adding a POST and a DELETE route. The 2 routes we created use GET but to make your application truly useful you will want to use at least 1 more type and that is POST.

He starts by adding a new POST route to handle the creation of a new "toy", complete with a correct response of a 200 code (HTTP for "created"). He follows this with a DELETE example, showing how to return a 204 if the delete works or a server error if something goes wrong. He also includes a curl call to test out the endpoints. In the upcoming third part David will look at breaking up the code a bit and putting it into separate files.

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Link: http://sleep-er.co.uk/blog/2014/Creating-a-simple-REST-application-with-Silex-part2/


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