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BitExpert Blog:
Why using code as DI config is a win!
Jul 26, 2017 @ 10:58:21

In a post to the bitExpert.de site Stephan Hochdörfer explains why he thinks that using code over configuration in a DI container is a better approach than static configuration definitions.

In my recent talk on introducing Disco - the DI container with the damn coolest name(tm) - I talk about why I believe that using XML or any other non-code configuration (YAML, JSON, ...) is not a good idea. This stirred some twitter discussion recently which led to this blog post.

Just for the record, for a very long time I was part of the XML camp - just browse my collection of old talks to see for yourself. I praised XML a lot as being the only true DI configuration format.

He then goes through some of the main issues he sees with using something like XML for the dependency container's configuration:

  • An XML editor won't give you code-completion for PHP classes or methods.
  • Refactoring won't work properly in an XML configuration file.
  • An XML editor is not capable of doing proper type checks.
  • XML is just too verbose.

For each item he provides a brief explanation and an example of XML where it helps to illustrate the point.

tagged: xml configuration code disco dependency injection container opinion

Link: https://blog.bitexpert.de/blog/why-using-code-as-di-config-is-a-win/

TutsPlus.com:
How to Register & Use Laravel Service Providers
Jul 20, 2017 @ 14:08:19

On the TutsPlus.com site they've posted a new tutorial showing you how to register and use service providers in Laravel and how it relates to the service container functionality.

If you've ever come across the Laravel framework, it's highly unlikely that you haven't heard of service containers and service providers. In fact, they're the backbone of the Laravel framework and do all the heavy lifting when you launch an instance of any Laravel application.

In this article, we're going to have a glimpse of what the service container is all about, and following that we'll discuss the service provider in detail. In the course of this article, I'll also demonstrate how to create a custom service provider in Laravel.

The article starts with an overview of the service container and service providers, describing what they are and providing some example code/configuration to clarify the concepts. It then gets into the creation of your own custom service provider. In their case they create a provider that doesn't really do anything but it does help to show how to make it, register it and put it to use in a controller.

tagged: tutorial register use laravel service provider serviceprovider container

Link: https://code.tutsplus.com/tutorials/how-to-register-use-laravel-service-providers--cms-28966

Scotch.io:
Get Started Running Laravel in a Docker Container
Mar 07, 2017 @ 14:07:28

The Scotch.io blog has a new tutorial posted showing you how to get a Laravel application up and running in a Docker container with a minimal amount of work. The article assumes you already have a working knowledge of Laravel and Docker, so if you're not familiar with those you'll need to read up there first.

Laravel and Docker are two very popular tools of choice when considering building for the web. Although both of them do very different things, they can both be combined to create amazing products.

For our use case, we will be running Laravel in a Docker container. This is going to be a simple demonstration on how to use both products to create real-life applications. Nothing heavy.

The tutorial starts with some of the prerequisites you'll need before getting started but quickly gets into the commands you'll need to set up your environment. Using a custom Docker container they show you the configuration to get the container set up, how to build the database connection, bring the container up and verify all is working as expected.

tagged: docker laravel container tutorial introduction installation configuration

Link: https://scotch.io/tutorials/get-started-running-laravel-in-a-docker-container

PHPBuilder.com:
Using Dependency Injection in PHP
Mar 03, 2017 @ 10:05:37

The PHPBuilder.com site has posted a tutorial talking about dependency injection in PHP applications covering not only the use of dependency injection (DI) containers but also constructor, setter, property and reflection based injection methods.

Dependency injection is a software design pattern that implements the inversion of a control concept for resolving dependencies. According to this concept, a class should not configure its dependencies statically, but should be configured from the outside.

A dependency is an object that can be used (a service) and an injection is the passing of a dependency to a dependent object (a client) that would use it. Passing the service to the client, rather than allowing a client to build or find the service, is the fundamental requirement of the pattern.

The tutorial starts out with a simple example of a set of classes that depend on each other through the creation of internal objects. They then show how the different types of dependency injection can help reduce these dependencies with brief descriptions and sample code for each. The final example, a dependency injection container, gives a quick example but also links to several package options you could pull into your application including Pimple, Aura.Di and PHP-DI.

tagged: dependency injection tutorial introduction setter constructor container property

Link: http://www.phpbuilder.com/articles/application-architecture/design/using-dependency-injection-in-php.html

Alejandro Celaya:
Run PHPUnit tests inside a docker container from PhpStorm
Feb 02, 2017 @ 11:14:04

Alejandro Celaya has a tutorial posted on his site showing you how you can improve your PHP workflow by running your unit tests in a Docker container from inside of PHPStorm.

Docker is, without any doubt, the trending tool these days. Everybody wants to use it, because it is very useful, allowing to easily generate development environments for any kind of application.

A couple months ago I started working with docker myself (it has taken me a while, I know), and now I can't imagine working without it. I started using it at work, but now I'm migrating all of my OSS projects too.

With Docker involved things get a bit more tricky when it comes to running your unit tests directly from PHPStorm (unlike local where it's just a few clicks away). Thankfully recent versions of PHPStorm come with a feature in the "Build, Execution, Deployment" that lets you define the location of the Docker executable. Then you'll need to set up a remote interpreter to link to the PHP binary then take that and link it back to the Docker installation. He ends the post showing how you can ensure it's working complete with a screenshot of the console showing the test results.

tagged: phpunit docker phpstorm container ide tutorial unittest

Link: https://blog.alejandrocelaya.com/2017/02/01/run-phpunit-tests-inside-docker-container-from-phpstorm/

James Cowie:
All hail Xdebug and lets let var dump die
Jan 12, 2017 @ 12:58:23

In a recent post to his site James Cowie sings the praises of Xdebug for debugging and says that "var_dump must die" as a method for debugging in your application development flow.

How many times have you been working in Magento or any other php application and hit an error, exception or something not quite right? For me a lot. I’ve been that developer that debugs by fire and throws echo var_dumps and dies around like a western gunslinger. It’s easy, provides quick feedback cycles but lets be honest its lazy, in efficient, rarely provides all of the data you need to solve the problem on the first try and its not something you want to boast about by the coffee machine.

[...] So whats the “better” way of debugging a application? Well welcome Xdebug + PHPStorm. Imagine inside of the IDE we can set a breakpoint, a fancy die and reload our web page. Magically the IDE has stopped execution and we can see the state of the application at that exact path. We can see the variables and we can step through the code and see exactly what class and method is called next and so on and so forth.

While his instructions are specific to PHPStorm, most major IDEs will have a similar setup process with their own tweaks. In his case, though, he has one more layer of complexity - the PHP is executing inside a Docker container. He walks you through the process he followed to get the flow from container to local IDE set up. He wraps up the post with an example of debugging a script and what the results look like inside of PHPStorm (including a screencast).

tagged: xdebug vardump phpstorm docker container tutorial

Link: http://jamescowie.me/blog/2016/12/all-hail-xdebug-and-lets-let-var-dump-die/

Mattias Noback:
Containerizing a static website with Docker, part III
Jan 09, 2017 @ 11:48:46

Matthias Noback has posted the third part of his "containerizing a static website with Docker" service, continuing on from his previous two posts to look at deploying the environment he's created.

In the previous posts we looked at creating a build container, and after that we created a blog container, serving our generated static website.

It's quite surprising to me how simple the current setup is — admittedly, it's a simple application too. It takes about 50 lines of configuration to get everything up and running.

The idea of the blog container, which has nginx as its main process, is to deploy it to a production server whenever we feel like it, in just "one click". There should be no need to configure a server to host our website, and it should not be necessary to build the application on the server too. This is in fact the promise, and the true power of Docker.

He then gets into the two remaining steps in the process resulting in the deployment of the simple application: pushing to Docker Hub and deploying out to a DigitalOcean server. He includes all of the commands and configuration you'll need to get the process set up and work with the remote machine.

tagged: docker series container part3 deploy dockerhub digitalocean

Link: https://php-and-symfony.matthiasnoback.nl/2017/01/containerizing-a-static-website-with-docker-part-iii/

Matthias Noback:
Containerizing a static website with Docker (Part 1 & 2)
Jan 06, 2017 @ 09:07:39

Matthias Noback has started a series to his site showing you how to use Docker along with a static site, like one generated with Sculpin to create a complete environment. So far he's posted part one and part two.

Recently a former colleague of mine, Lucas van Lierop, showed me his new website, which he created using Spress. Lucas took two bold moves: he started freelancing, and he open-sourced his website code. This to me was very inspiring. I've been getting up to speed with Docker recently and am planning to do a lot more with it over the coming months, and being able to take a look at the source code of up-to-date projects that use Docker is certainly invaluable.

Taking lots of inspiration from Lucas's codebase, and after several hours of fiddling with configuration files, I can now guide you through the steps it took to containerize my blog (which is the site you're visiting now) and deploy a single container to a production server.

In part one he talks about how his blog is currently set up - based on a "large set of Markdown files" - and using Sculpin to generate the resulting site. He walks through the configuration of the Sculpin installation and how to configure and build the initial container, the "build" container.

In part two he continues the process but creates a "blog" container this time. This container runs the web server itself (nginx) configured as required by the Sculpin formatting.

tagged: container docker static website tutorial series part1 part2

Link: http://php-and-symfony.matthiasnoback.nl/categories/Docker/

DotDev.co:
Understanding the Laravel Service Container
Sep 13, 2016 @ 12:56:04

The Dotdev.co blog has posted a tutorial for the Laravel users out there with the goal of helping you understand the Laravel service container, a key part of the framework's functionality and an extensible feature you can adapt to some of your own needs.

Learning how to build an application with Laravel is not just about learning to use the different classes and components within the framework, it is not about remembering all artisan commands or remembering all helper functions (we have Google for that). Learning to code with Laravel is learning the philosophy of Laravel, its elegance and its beautiful syntax. I personally feel it is an art and a craft (its not a coincidence that Laravel developers are sometimes referred to as Web artisans). This is true for any other framework as well.

A major part of Laravel’s philosophy is the Service Container or IoC container. As a Laravel developer, understanding and using the Service Container properly is a crucial part in mastering your craft, as it is the core of any Laravel application.

The post starts with some of the basics about the container and how objects/instances are bound to it. They give an example of binding a FooService class in the "register" methods of providers. A code example is also included showing how to use the service you previously bound. There's also a description of binding interfaces in the IoC, making it easier for custom classes to resolve interfaces when they're implemented. The post wraps up with a bit covering the resolving of dependencies and the code you'll need to set them up.

tagged: laravel service container introduction tutorial framework bind

Link: https://dotdev.co/understanding-laravel-service-container-bd488ca05280#.9gd6v3t4l

Zend Developer Zone:
Testing your project with PHP 7.1
Aug 23, 2016 @ 12:20:12

On the Zend Developer Zone author Cal Evans has written up a post showing you how to test your application with PHP 7.1, the upcoming minor release version for the PHP 7.x series.

Both PHP 7.0 and the upcoming PHP 7.1 release are fairly benign releases. They do not break backwards compatibility except in a few edge cases. If you’ve not yet moved to PHP 7.0, check out our posts tagged php7 for details on what might trip you up there.

Regardless of what version you are moving to, 7.0 or 7.1, you are going to want to test your application before you make the move in production. Sometimes that is difficult though you need a server properly configured, you need someone to manage it, most importantly, you need unit tests. While I can’t help you with that last one – other than point you to @grmpyprogrammer who will publicly abuse you until you write them – I can help you with the “where to test” problem.

Cal shows how to make use of Docker containers to easily test your application in a more self-contained environment and make it simpler to swap out the PHP versions in your platform. He walks you through the steps you'll need to follow to get the environment set up, pull down required components, install and compile PHP and, finally, install Composer globally. Once set up, he shows how to log in, clone your project and execute its test suite. He finishes the post with a few comments about this being a "sandbox", not a CI environment and how it is "future proof" for later versions of PHP too (as it doesn't lock it down to just PHP 7.1.x).

tagged: testing project php71 docker container tutorial

Link: https://devzone.zend.com/7262/testing-project-php-7-1/