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ClanCats Station:
Writing a webserver in pure PHP - Tutorial
March 26, 2015 @ 11:27:42

On the Clancats.com blog there's a recent post showing how to create a web server in pure PHP, an interesting experiment but definitely not recommended for any kind of higher load situation.

Well, this is pretty useless, but it is possible. But again its pretty.. uesless. This tutorial will hopefully help you to better understand how a simple webserver could work and that it's no problem writing one in PHP. But again using this in production would be trying to eat a soup with a fork. So just, .... just don't. Let me shortly explain why this is not a that good idea.

PHP is a scripting language that simply is not really designed for such tasks. A webserver is a long running process which PHP is not made for. Also PHP does not natively support threading ( pthreads ), which will make developing a good performing webserver a really hard task.

He walks you through all the code needed to create the web server (also available on GitHub) by making:

  • A "server" that does the listening for incoming and sends outgoing requests
  • A request object that parses the incoming request and makes header and body content available
  • A response object that allows for the setting of response codes, body content and headers
  • Exception handling for problems encountered during the request/response process

The full code is provided during the process along with explanations of what each part does. There's also a basic introduction to what a typical web server is and how the process of request/response usually flows.

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webserver tutorial version request response server

Link: http://station.clancats.com/writing-a-webserver-in-pure-php

DigitalOcean Community Blog:
How To Set Up a Two Node LEPP Stack on CentOS 7
March 25, 2015 @ 11:52:30

On the DigitalOcean community blog they've posted a guide to setting up a LEPP server (Linux, Nginx, PHP and PostgreSQL) on a CentOS 7 instance (not specific to their own platform either, can be applied anywhere).

In this tutorial, we will create a simple web application in a two-tier architecture. Our base operating system for both nodes will be CentOS 7. The site will be powered by an Nginx web server running PHP code that talks to a PostgreSQL database. Instead of adopting a "top-down" approach seen in other LAMP or LEMP tutorials, we will use a "ground-up" approach: we will create a database tier first, then the web server and then see how the web server can connect to the database. We will call this configuration a LEPP (Linux, Nginx, PHP, PostgreSQL) stack.

They create a two-tier setup that involves the use of two CentOS systems (with examples from their own hosting options) and walk you through:

  • Installing PostgreSQL
  • Configuring PostgreSQL
  • Updating the Database Server Firewall
  • Creating and Populating the Database
  • Installing Nginx
  • Updating the Web Server Firewall
  • Configuring Nginx
  • Installing PHP
  • Configuring PHP
  • Creating the Web Application

It seems like a lot of steps but all of the necessary commands and configuration updates are included in each step so it's basically a copy and paste kind of walk-through.

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tutorial centos leep linux nginx php postgresql walkthrough

Link: https://www.digitalocean.com/community/tutorials/how-to-set-up-a-two-node-lepp-stack-on-centos-7

NetTuts.com:
Programming With Yii2 Integrating User Registration
March 24, 2015 @ 12:27:16

NetTuts.com has posted the next part in their "Programming with Yii2" series today with this tutorial showing you how to integrate user registration into your sample application.

This is part four of a series on Yii2. In Programming With Yii2: Getting Started, we set up Yii2 locally, built a Hello World application, set up a remote server, and used Github to deploy our code. In part two, we learned about Yii's implementation of its Model View Controller architecture and how to build web pages and forms that collect and validate data. In part three, we learned about working with databases and ActiveRecord. In this tutorial, we'll walk you through integrating a popular user registration plugin.

They walk you through the use of the Yii2-User extension to provide the user handling functionality. The tutorial shows you how to get it installed (via Composer), run its database migrations to create the needed tables and where to update the configuration files to pull the plugin into the execution. They also help you set up SwiftMailer (what it uses to send its emails) and then gets into the integration of the registration with the application with a signup page.

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programming yii2 integration user registration yii2user extension tutorial

Link: http://code.tutsplus.com/tutorials/programming-with-yii2-integrating-user-registration--cms-22974

U
March 24, 2015 @ 10:51:13

Paul Jones has a new post to his site showing how to merge one of the components of the Aura framework with the templating library Plates, a part of the The League of Extraordinary PHP Packages. In this post he shows how to integrate the Plates rendering engine into the Aura.Html component for use as a view layer.

Aura has its own native PHP template package, Aura.View, a direct descendant of Savant and Solar_View, as well as a cousin to Zend_View. The v1 Aura.View package used to include a helper system. Once we realized that there was no reason to tie the helper system directly to the view system, we released the helpers as a standalone Aura.Html package. This means the helpers can be used in any PHP presentation code, framework-based or otherwise.

Plates lets you register functions against its own internal handling, referencing the different elements to be rendered. He includes a code example showing this integration and how they look used in a Plates template.

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aura framework league plates templating library tutorial register

Link: http://paul-m-jones.com/archives/6111

SitePoint PHP Blog:
User Authentication in Symfony2 with UserApp.io
March 19, 2015 @ 09:18:18

On the SitePoint PHP blog Daniel Sipose has written up a tutorial showing you how to use the UserApp.io service to authenticate users for your Symfony2 applications.

UserApp.io is a handy user management tool and API. It provides a web interface to deal with user accounts (and the many features this involves) and an API to hook them into your own web application. The purpose of this service is to make it easier and safer to manage user authentication by not having to worry about that on your own server. It has SDKs and various wrappers for many programming languages and frameworks and the price is affordable. Yes, it comes with a price but you can get started freely with quite a lot of things to play around with.

He makes use of this library (his own creation) and the UserApp.io SDK to hook into Symfony2's own Security component authentication handling. He starts by explaining some of the classes he'll be creating including the form authenticator, a user provider, the logout handler and an custom exception. The full code is included for each as well as the changes you'll need to make to the YAML configuration to hook it all together.

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user authentication symfony2 userappio service tutorial

Link: http://www.sitepoint.com/user-authentication-symfony2-userapp-io/

NetTuts.com:
Design Patterns The Command Pattern
March 17, 2015 @ 12:42:22

NetTuts.com continues their series covering the basics of design patterns (in PHP) with a new article about the Command design pattern. This pattern is particularly useful for executing self-contained "commands" without other interaction.

In this article, we will be going through the command design pattern. As the name says, in this pattern we will be dealing with executing various commands. [...] Basically a pattern has numerous elements involved, which are as below. In the next section, we will be exploring each element with a code example. I will be taking the example of radio actions-very basic actions would be turning the radio on or off. So let's dive into each element.

Using the illustration of the radio, they go through the creation of the classes for the controls (on/off) and the two matching commands. The invoker is then told to execute the "turn off" command on the radio control object passed in. This sounds a little confusing but the code included in the article makes it clear how this implementation of the command is structured.

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designpattern tutorial series command pattern radio example

Link: http://code.tutsplus.com/tutorials/design-patterns-the-command-pattern--cms-22942

SitePoint PHP Blog:
How to Use GitHub's API with PHP
March 17, 2015 @ 10:11:39

The SitePoint PHP blog has a new tutorial posted showing you how to interact with the GitHub API via PHP thanks to the KnpLabs library to create a simple automation system to perform some simple tasks.

Github is one of the best ways to share code and collaborate. In this article, we are going to learn how to consume their API and how we can use it to accomplish some of our daily tasks. We are going to explore some of the daily tasks that can be accomplished through the Github API and build a small app using Laravel to illustrate the use cases. You can check the final result on Github.

They walk you through the setup of an application on the GitHub side and how to configure the related settings in your Laravel application. He shows how to bind the GitHub library to the app, set up some sample routes and build out controllers to:

  • List repositories
  • View repository content
  • Editing files
  • Viewing commits

Each item includes the code you'll need to make it happen, an example of the output you'll get from the API and how to use the data on your side in your views.

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github api tutorial knplabs repository edit view content commits

Link: http://www.sitepoint.com/use-githubs-api-php/

Sameer Borate:
Create a quick REST API using Slim framework
March 16, 2015 @ 10:16:40

Sameer Borate has a quick tutorial posted showing how to create a basic REST API with Slim, the popular microframework for PHP.

During a recent client project, I frequently needed to access a remote database table and update the same for certain fields. This was accomplished using phpMyAdmin on the server. However, it was getting tedious and was prone to accidental updates and deletes. [...] This is all a tedious process and prone to errors. One solution was to create a quick REST api wrapper around the remote database, using which developers could update the database table without any risk of corrupting the data and also with the added benefit of updating the table programmatically.

He uses an example of working with student data (SQL for the table included) and helps you get Slim installed and working with an Apache install. He covers the overall structure of the API he's creating and the code to help make it happen. Obviously he doesn't share the entire codebase - that would be too large. He does show examples of GET and POST requests for the student data to give you something to work from. He finishes the post with a few simple cURL calls to make requests to the API and the responses.

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rest api tutorial slim microframework example student

Link: http://www.codediesel.com/php/create-a-quick-rest-api-using-slim-framework/

SitePoint PHP Blog:
Creating Custom Field Formatters in Drupal 8
March 12, 2015 @ 12:29:01

The SitePoint PHP blog has a new tutorial posted today showing how to create custom field formatters in a Drupal 8 application. Custom formatters allow you to enhance the current functionality of objects in the application and extend them with additional functionality.

With the introduction of annotated plugins, a lot has changed in Drupal 8. We have a more streamlined approach to describing and discovering pieces of functionality that extend the core. Along with many other components, the former Field API (part of the larger and consolidated Entity API) is now based on plugins. In this tutorial we will go through defining a custom field formatter for an existing field (image). What we want to achieve is to make it possible to display an image with a small caption below it. This caption will be the title value assigned to the image if one exists.

They start with a new custom module, starting with just the YAML configuration. Then they help you create the field formatter as a plugin in the "Plugin/Field/FieldFormatter" namespace (code included). They explain how this code works and show how to add it as a hook to make it available to the template layer. Finally they show it in use and how it places the title value into the image caption in the result.

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drupal8 custom field formatter tutorial plugin image title

Link: Creating Custom Field Formatters in Drupal 8

Bosnadev.com:
Using Repository Pattern in Laravel 5
March 11, 2015 @ 09:51:59

Mirza Pasic has posted a tutorial to the Bosnadev.com site introducing you to the repository design pattern and how to use it in a Laravel 5-based application.

These days there is a lot of buzz about software design patterns, and one of the most frequently asked questions is "How can I use some pattern with some technology". In the case of Laravel and the Repository pattern, I see often questions like "How I can use repository pattern in Laravel 4″ or nowadays "..in Laravel 5″. Important thing you must remember is that design patterns do not depend on specific technology, framework or programming language.

He starts with a brief overview of the Repository pattern, just to catch everyone up to speed (complete with a diagram for extra effectiveness). He then talks about the role interfaces play in the structure and where in the Laravel directory structure he recommends placing them. He configures the "composer.json" file to autoload them correctly and gets into his actual implementation. He creates a system to work with the push and pull of movie/actor/rental data including the code to make not only the specific repository instances but the generic class they inherit from. Next he creates the "criteria" object type to help with searching the data and makes a few examples ("length over two hours", "rental below three"). Finally he shows how to use this criteria searching in a controller to create custom queries and result sets.

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bosnadev repository designpattern laravel tutorial criteria interface

Link: http://bosnadev.com/2015/03/07/using-repository-pattern-in-laravel-5/


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