Again, thanks to everyone who got in touch and best of luck to Ben and his team with the site.

It’s been just over a year since I initially launched zfsnippets.com, it was a good little project for me to get used to the Zend Framework, but since then I’ve totally neglected it. I’d normally leave a website going despite my lack of enthusiasm, but I no longer need the VPS it is hosted on so I’m looking for someone else to take the project on and move to their hosting solution.

My interests have moved quite rapidly in the last year and the project is sadly no longer of interest to me. ZFSnippets receives approximately 2,500 visits a month, so I think it’s worth keeping the project alive.

If you’re interested in hosting the site and hopefully building on it and improving it, please email me, dave.marshall _at_ atstsolutions.co.uk.

Sometime last year, I, along with quite a few others, was asked to review one of
Packt Publishing’s new books, Zend Framework 1.8 Web Application Development, written by Keith Pope. They sent me a copy, which was very good of them and although it’s taken me ages to finish and get round to writing this review, that’s not a true reflection of how good the book was, I’m just a very busy/lazy person! So lazy, that I did in fact say I’d have it done in two weeks, which turned into 4 months.

Packt asked if I’d be interested in reviewing the book, so watch this space, I’ll be back in a couple of weeks with a review.

My Post dated 15/10/2009

Introduction

Design, develop, and deploy feature-rich PHP web applications with this MVC framework

That is the books strap line, and it does exactly what it says on the tin. The bulk of the book actually takes you through the design, development, testing and deployment of a real world example application, called the Storefront. The book claims that it is written for PHP web developers that are either using or looking to start using the Zend Framework and that a basic knowledge of Object Oriented design would be helpful. While you might be able to manage without any OOD experience, I’d say you definitely need some to get the most out of this book, as the second chapter digs right under the hood of the Frameworks MVC architecture. My personal experience was that I got to learn all the things I haven’t had time to learn, I’ve been using the Framework for a couple of years now, always appreciating, but not always understanding what it was doing for me.

MVC Architecture

The first chapter gives you a brief overview of creating an MVC application in the Zend Framework, experienced users of the Framework will probably want to gloss over this part, whereas people looking to start using the framework should take their time and take things in. The next chapter is when I really started to enjoy the book. Each component of the MVC architecture is presented as it’s own topic, with each component getting a breakdown of Design Patterns/theory, default settings/configuration, usage and finally customisation.

The chapter is well put together and considering the amount of information portrayed, is not overwhelming.

Storefront Application

The rest of the book provides the information you need about the framework around a real world example application, called StoreFront, which is a basic e-commerce application. I should point out that I didn’t code the application as I went, if I’m reading I like to read, but where appropriate I have used the book as a reference when updating my existing Zend Framework applications.

The best thing about these chapters though, is some of the design theory you pick up on the way, that isn’t directly relevant to the Zend Framework, but can be applied to any framework out there. Best practices such as Fat Models, Composition, Fluent interfaces are all explained in detail, along with relevant and realistic examples. Further more, the applications MVC separation is excellent, taken in context (it might be a little overkill for the example application, but is there to show you the methods).

After taking you through the creation of the application, the book then takes you into optimisation and testing. The optimisation takes you though some general PHP optimisation techniques, but then ploughs into techniques like a transparent abstract cache that is applied to the models. Testing is carried out with the trusty PHPUnit, along with the frameworks extension of the library Zend_Test and the book goes on to integrate the test suites with apache ant (why not phing) and phpundercontrol.

Conclusion

In conclusion, I thought this book was an excellent read and I plan to follow it through again when I build my next ZF app (I have two good ideas in the pipeline). Find out more or and buy it!. Thanks to Packt for sending me a copy!

Packt Publishing have recently contacted me letting me know about one of their new books, Zend Framework 1.8 Web Application Development. It looks reasonably priced, and if you fancy having a quick look before you by, the author Keith Pope has a free chapter to download. Packt asked if I’d be interested in reviewing the book, so watch this space, I’ll be back in a couple of weeks with a review.

Some time passed, and now it’s here at work, placed next to our all important tea, coffee and biscuits station.

It’s A0, covers nearly all of the major components and is well worth having! Top props to guys over there for pushing the Zend Framework like this. Cheers!

I also contributed a basic bit of code to Rob Allen’s Shorter Links plugin for wordpress, allowing users to specifying a base url, davedevelopment.co.uk isn’t all that good for short URLs. Just need to upgrade the plugin and decide on a short domain for my blog now.

Update: registerd daved.in, works a treat

Since then, following suggestions on the feedback forum I’ve implemented a few new features. What I’ve noticed is the ease at which these features where added, thanks to the quality of the Zend Framework.

Favourites

Along with adding icons for up votes, there’s now a little star icon to add snippets to your favourites, easily accessible from your user page. A little sprinkling of dojo and these are added via AJAX.

Revision History

Snippets can now be edited by the creator and a revision history is kept.

Using a simple implementation of the Longest common subsequence problem, you can also view diffs of the revisions.

Search

Lastly there’s the search engine, built on top of Zend_Search_Lucene. This took a little more work, but the results were worth it. I hadn’t realised how powerful the Lucene query language was until now and I’m very impressed with the implementation.

As you would expect, traffic has slowed down considerably since the initial burst, but there’s still a bit of steady traffic there and I hope people keep coming back to visit now and then. As for going forward, I think I’ll add a field to allow contributors to specify which zend framework version their snippet was tested or is compatible with, then look a little more at the scoring system.

<?php
class BankAccount
{
    protected $balance;

    public function __construct($balance)
    {
        $this->balance = $balance;
    }

    public function __toString()
    {
        return 'Balance: ' . $this->balance;
    }

    public function debit($debit)
    {
        $this->balance -= $credit;
    }

    public function credit($credit)
    {
        $this->balance += $credit;
    }
}

class SavingsAccount extends BankAccount
{
    public function __construct(BankAccount $parent)
    {
        $this->balance = $parent->balance;
    }
}

$first = new BankAccount(1.00);
$second = new SavingsAccount($first);

echo $second, PHP_EOL; // Balance: 1

It turns out that PHP’s visibility restrictions are on a class level, rather than an instance level, and the fatal error was actually due to a bug in 5.1.x.

The visibility of a property or method can be defined by prefixing the declaration with the keywords: public, protected or private. Public declared items can be accessed everywhere. Protected limits access to inherited and parent classes (and to the class that defines the item). Private limits visibility only to the class that defines the item.

This bemused me, as it would appear to me there is no point having a protected operator at all. Suppose I am a lowly programmer given the BankAccount Class above as an API I can use but not change. I have a data access object that returns BankAccount objects too, which I also can’t touch. For reasons unknown to me, but probably to try and create some encapsulation so they can log transactions via the credit and debit methods, the original developer decided that I shouldn’t be able to directly access the balance attribute, but I want to.

<?php

//$myAccount = $dao->getAccount(123);
$myAccount = new BankAccount(1.00);
echo $myAccount, PHP_EOL; // Balance: 1

class WorkAround extends BankAccount
{
    public static function setBalance(BankAccount $acc, $balance)
    {
        $acc->balance = $balance;
    }
}

WorkAround::setBalance($myAccount, 1000000.00);
echo $myAccount, PHP_EOL; // Balance: 1000000

This just doesn’t seem right to me. Don’t get me wrong, I appreciate there needs to be some level of responsibility taken by developers to not do this kind of thing. My colleague writes a lot of Java, in which this is also the expected behaviour with the protected visibility, hence why he set out on this path, so it seemed right to him. Because of this I embarked on a little research to determine how other languages implement visibility.

A very quick and non-extensive bit of research led me to believe that Python doesn’t have visibility as I know it, and C# has protected and internal, but neither work the way I’d like. Ruby has the closest to what I desire in the form of instance variables, but I’m sure there’s plenty I’ve missed.

class BankAccount
    def initialize(bal)
        @balance = bal
    end

    def debit(debit)
        @balance -= debit
    end

    def credit(credit)
        @balance += credit
    end

    def to_s
        "Balance: %d" % @balance
    end
end

class SavingsAccount < BankAccount
    def setBalance(acc, bal)
        # This wont work - we cant access acc.balance
        # acc.balance = balance;
    end

    def bonusCredit(credit)
        # just to prove a sub class can access
        # the instance variable
        @balance += credit + 1
    end
end

first = BankAccount.new(42);
second = SavingsAccount.new(1);

second.setBalance(first, 5000000);
second.bonusCredit(10);

print first  # Balance: 42
print second # Balance: 12 

It worries me sometimes when I come across things like this that I blatantly should know and understand properly. Cheers JC.

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Your CV does not get you a job

Your CV gets you an interview, your performance in the interview gets you a job. Your CV is a right of passage, this stage is used to filter out the wrong candidates.

Your CV should evolve like you

You should be continually evolving and improving yourself, your CV should continually evolve with you. I can’t see any reason why any two companies should see the same version of your CV. Every time you apply for a position, you CV should be tailored to suit the position. Cut out anything you think will not interest your prospective employer, embellish on what will interest them. You come across as a better candidate and you don’t waste their time.

Don’t stuff your CV with keywords/acronyms

Skills: PHP4/5, SOAP, XML, XSLT, JSON, AJAX, (X)HTML, CSS, RoR, MySQL, SEO, WAI, WCAG, MVC, XML-RPC….

These kinds of lists are great for getting your CV past an agency recruiter, but the actual employers would rather see a reasonable description of how you used 5 of those technologies. I try to briefly describe what I did and why I used those methods/skills/technologies.

.. Overcame performance issues due to large volumes of data by including caching, AJAX and moving some business logic to database triggers and stored procedures. (LAMP)

Besides, if you’re good, they’ll hire you and expect you to quickly learn the skills, technologies and methods they use.

Formatting and Proof Reading

I like CVs short, they take less time to read. One page is good, any more than two is bad. Keep it simple, spell check it, grammar check it, get people smarter than you to proof read it. Speaking of which, here’s my current offering, although it still needs a lot of work. I intend to try switching to plain text, ala Stevey, plus I recently got promoted so I’ve more work history to add. Comments appreciated.

Further Reading

• Manager Tools – Resume podcast
• Manager Tools – Sample Resume
• Steve Yegge on CVs
• Joel Spolsky – Getting your resume read
• Joel Spolsky – Sorting Resumes
• BCS CV Clinic

More in this series

• Part 1: Technical Skills
• Part 2: Soft Skills
• Part 3: Curriculum Vitae

phpnw08 is a 1 day conference, to be held on Saturday 22nd November 2008, for developers, designers, managers or anyone else with an interest in the PHP programming language.

The conference will have a range of well known as well as more local speakers and aims to highlight current best practice and emerging topics within the sphere of PHP and web development.

This will be the first conference I’ve attended and I’m lucky enough to have my ticket paid for by Spencers. I’m particularly looking forward to the keynote with Derick Rethans, The Power of Refactoring with Stefan Koopmanschap and the final panel with Steph Fox, Ivo Jansch, Scott Macvicar and Felix De Vliegher.

Anybody else who’s going, that’s my picture over on the right, if you see me, please introduce yourself! Anybody who’s in the UK and not going, register now!