Type Hinting is important

One of my favorite PHP interview questions, is: what is Type Hinting and why it’s important? Putting definition in one sentence, Type Hinting is a way to define type of parameter in function signature and it’s a sine qua non to leverage polymorphism. Because of dynamic typing in PHP, parameters don’t need to have type used. Also, by type here, I mean complex types (class, abstract class, interface, array, closure), not primitives like integer or double.

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Immutable value objects in PHP

Value objects are one of building blocks in Domain Driven Design. They represents a value and does not have an identity. That said, two value objects are equal if their values are equal.

Other important feature is that Value Objects are immutable, i.e. they can not be modified after creation. Only valid way to create Value Object is to pass all required informations to constructor (and should be validated somewhere there). No setter methods should take place.

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Software developers care too much about tools

Lately I see perilous situation in software development area. There are plenty of good devs so much bounded to tools. By tools, I mean mostly frameworks. I would like to elaborate a bit about that, but those are my personal opinions and they aren’t here to offend anyone.

First of all, we all need to admit, that quality of modern MVC framework raised a lot, comparing with state of things few years ago. Speaking about PHP – at the time, when I attracted my attention to this language, there were pure wilderness. We did not have any strong framework (unlike Ruby On Rails, which were sine qua non choice for Ruby web development). That caused multiple projects development, some of them are dead now (or should be), some hasn’t got good market adaptation and some of them are industry leaders at the moment (Symfony and Zend).

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Gender guessing based on name in PHP

Today I discovered neat PHP extension named Gender: http://www.php.net/manual/en/book.gender.php. It determines gender based on name and country. Probably below code will be useful on some point of your software development career :-)

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Thoughts after Symfony Live Berlin 2012

Lately I had a great opportunity to attend to Symfony Live conference in Berlin. That was our second chance to meet Symfony community after successful edition in London this year.

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Is Symfony2 a MVC framework?

Is Symfony2 a MVC framework? This question in tricky and you can’t see answer at the first moment when you visit symfony.com website. Even more – MVC pattern isn’t mentioned in elevator pitches in “What is Symfony” section. Most of PHP developers will tell you promptly, that this is Model View Controller implementation without a doubt.

The question is: where is Model layer in Symfony2? My answer is: there’s ain’t one and it’s good.

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Export colored Behat scenarios to PDF

Everyone falls in love with Behat. It’s powerfull tool for testing business requirements in PHP. Behat scenarios, written in cross-platform Gherkin language, are readable for developers, easy to understand and verify for business people and executable by machine, which goes through an application to prove that it works as expected.

Behat scenarios are one of the best ways to describe system. UML Use Cases or tons of pages in SRS documents are fine, but hard to understand from the begining, and even harder to maintain in the future. Behat eases this process and also gives opportunity to automate requirements verification.

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Let’s meet at PHPCon 2012Spotkajmy się na PHPCon 2012

During upcoming edition of PHPCon 2012 in Kielce I’ll give a talk “Symfony2 w chmurze” (Symfony2 in the cloud). I’ll describe advantages of cloud infrastructure purposed for web applications, some use cases of cloud deployments and things which developers need to keep in mind, to get Symfony2 application work properly in such environment.

More informations are available in PHPCon agenda:http://phpcon.pl/2012/pl/agenda

See you there :-)Podczas tegorocznej konferencji PHPCon 2012 w Kielcach (28-30 września) będę miał przyjemność poprowadzić prelekcję “Symfony2 w chmurze”. Będę mówił o zaletach korzystania z chmury jako infrastruktury serwerowej pod aplikacje webowe, przykładowych przypadkach użycia oraz zabiegach, o których należy pamiętać, aby aplikacja w napisana w frameworku Symfony2 działała poprawnie w takim środowisku.

Więcej informacji w agendzie PHPCon: http://phpcon.pl/2012/pl/agenda

Do zobaczenia :-)

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Deploying Symfony2 applications with Ant

When you have plenty of Symfony2 applications and you need to deploy them from time to time, you are probably sick of thinking about every activity you need to do for every deploy. Often people use some build scripts, which are hard to maintain and tends to be unreadable. I wanted to automate it as much as it possible and I’ve choosen Ant, to help me out.

Actually Ant is choice, due to other fact – it can be easily used with Continous Integration server like Jenkins, while ssh scripts often generates some problems. With this aproach all you need to have Ant binary on server and build.xml config in root folder. You can have different targets defined in config and chain them using depend attribute. So in this case you can have target for building project on production server (usefull for continous delivery) and setup for Jenkins. 

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The most useful features of PHP 5.4

As you probably have noticed, PHP 5.4 is around the corner. As far, there’s Release Candidate 6 available and final release is a matter of weeks. Let’s have a look at new features, that will make PHPers live easier.

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