Tag: php

Proxies in PHP

A number of programming design patterns look very similar. One of these is the Proxy pattern, which, at first glance, can look like a number of others: Decorator, Flyweight, even plain old object extension. However, it has its own niche, and it can provide some incredible flexibility for a number of programming scenarios.

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Backported ZF2 Autoloaders

In the past six weeks, I've delivered both a webinar and a tutorial on Zend Framework 2 development patterns. The first pattern I've explored is our new suite of autoloaders, which are aimed at both performance and rapid application development -- the latter has always been true, as we've followed PEAR standards, but the former has been elusive within the 1.X series.

Interestingly, I've had quite some number of folks ask if they can use the new autoloaders in their Zend Framework 1 development. The short answer is "yes," assuming you're running PHP 5.3 already. If not, however, until today, the answer has been "no."

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Code Generation with Zend\CodeGenerator

Zend Framework has offerred a code generation component since version 1.8, when we started shipping Zend_Tool. Zend_CodeGenerator largely mimics PHP's ReflectionAPI, but does the opposite: it instead generates code.

Why might you want to generate code?

  • You can use it as an assistive form of "copy and paste" for common tasks (as an example, it's used in zf.sh to generate controller classes and action methods).
  • You might want to generate code from configuration, to remove the "compile" phase of generating objects from configuration values. This is often done to improve performance in situations that rely heavily on configurable values.

Zend\CodeGenerator in the ZF2 repository is largely ported from Zend Framework 1, but also includes some functionality surrounding namespace usage and imports. I used it this week when working on some prototypes, and found it useful enough that I want to share some of what I've learned.

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Dependency Injection: An analogy

I've been working on a proposal for including service locators and dependency injection containers in Zend Framework 2.0, and one issue I've had is trying to explain the basic concept to developers unfamiliar with the concepts -- or with pre-conceptions that diverge from the use cases I'm proposing.

In talking with my wife about it a week or two ago, I realized that I needed an analogy she could understand; I was basically using her as my rubber duck. And it turned out to be a great idea, as it gave me some good analogies.

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The Ideas of March

Chris Shiflett has asked the question, why don't people blog anymore? In this age of real-time streams and dead-simple status updates, blogs often feel like the uncared-for step-child or a website; indeed, many folks are trading their blogs for pages that simply track their various lifestreams (tweets, facebook status, flickr images, and more).

While this sort of thing is trendy and interesting, it also sucks:

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Git Subtree Merging Guide

I've been investigating ways to incorporate third-party repositories and libraries into my Git projects. Subversion's svn:externals capabilities are one compelling feature for that particular VCS, and few, if any, other VCS systems, particularly the DVCS systems, have a truly viable equivalent. Git submodules aren't terrible, but they assume you want the entire repository -- whereas SVN allows you to cherry-pick subdirectories if desired.

Why might I want to link only a subdirectory? Consider a project with this structure:


On another project, I want to use ComponentB. With svn:externals, this is easy:

library/Foo/ComponentB http://repohost/svn/trunk/library/Foo/ComponentB

and now the directory is added and tracked.

With Git, it's a different story. One solution I've found is using git-subtree, an extension to Git. It takes a bit more effort to setup than svn:externals, but offers the benefits of easily freezing on a specific commit, and squashing all changes into a single commit.

Jon Whitcraft recently had some questions about how to use it, and I answered him via email. Evidently what I gave him worked for him, as he then requested if he could post my guide -- which you can find here.

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PHP Community Conference

Last year, a new conference launched, Brooklyn Beta. The buzz I heard about it from attendees was amazing; words like "inspiring," "intimate," and "energizing" were all used to describe the experience. I found myself wishing I'd made time in my schedule to attend.

Fast forward a few months, and a new conference has been announced, the PHP Community Conference. It has similar goals to Brooklyn Beta: create a conference where we can talk about the language we love so passionately.

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How to Contribute to ZF2

ZF2 development is ramping up. We've been at it for some time now, but mostly taking care of infrastructure: converting to namespaces, re-working our exception strategy, improving our test suites, and improving our autoloading and plugin loading strategies to be more performant and flexible. Today, we're actively working on the MVC milestone, which we expect to be one of the last major pieces necessary for developers to start developing on top of ZF2.

A question I receive often is: "How can I contribute to ZF2?"

Consider this your guide.

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Why PHP Namespaces Matter

You've heard about PHP namespaces by now. Most likely, you've heard about -- and likely participated in -- the bikeshedding surrounding the selection of the namespace separator.

Regardless of your thoughts on the namespace separator, or how namespaces may or may not work in other languages, I submit to you several reasons for why I think namespaces in PHP are a positive addition to the language.

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Taming SplPriorityQueue

SplPriorityQueue is a fantastic new feature of PHP 5.3. However, in trying to utilize it in a few projects recently, I've run into some behavior that's (a) non-intuitive, and (b) in some cases at least, undesired. In this post, I'll present my solutions.

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