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Zend Framework Blog:
REST Representations for Expressive
Aug 09, 2017 @ 10:12:18

On the Zend Framework blog there's a new post from project lead Matthew Weier O'Phinney covering REST representations in Expressive and the release of two new components to help with their implementation.

We've been working towards our various Apigility on Expressive goals, and have recently published two new components: zend-problem-details and zend-expressive-hal.

These components provide response representations for APIs built with PSR-7 middleware. Specifically, they provide: Problem Details for HTTP APIs (RFC 7807) and Hypertext Application Language (HAL).

These two formats provide both JSON and XML representation options (the latter through a secondary proposal).

The post then goes on to talk about the idea of "representations" and how it relates back to the structure of the data returned and how the user knows what operations they can take on it. He also talks about the differences between normal responses and errors and gives example output helping to illustrate his points. The remainder of the post gets into the details of the two new components, their use and how to implement them in Expressive.

tagged: zendexpressive rest representation data structure response api component tutorial

Link: https://framework.zend.com/blog/2017-08-08-expressive-rest-representations.html

Stovepipe Systems:
Immutability of Data
Jul 13, 2017 @ 10:51:22

On the Stovepipe Systems blog today Yannick de Lange has written up a post looking at data immutability and how using this concept can help improve your development and simplify data handling in your applications.

When dealing with enterprise software, your data is often the most valuable part. It contains all your customer information, contracts, invoices and much more. So what are you going to do to make sure the data is being dealt with correctly? A bug in your code can have a high impact on the integrity of your data. If the bug is causing unwanted changes in your data, fixing the damage might prove to be quite a big challenge.

With this post I would like to show how data immutability can help design a more robust system. One that is less susceptible to bugs that might make unwanted changes to your data.

He starts by talking about how immutability and data handling might seem like "a contradiction" but that it can, instead, be thought of as "versioning your data". He gives an example of an end date on a contract and how changing it directly leads to data loss. He then gets into an actual code example showing how to implement this data versioning. He starts by creating the basic "Contract" object but then refactors it into "versioned" types and how the changes would be tracked internally, updating with each change to the data instead of overwriting.

tagged: data immutability example tutorial version dataloss

Link: https://stovepipe.systems/post/immutability-of-data

NetTuts.com:
CodeIgniter Form Validation: From Start to Finish
Jul 06, 2017 @ 10:53:12

The NetTuts.com site has a new tutorial posted covering form validation in CodeIgniter "from start to finish" showing you how to use the built-in functionality to verify the information coming from your users.

As a web application developer, form validation is a crucial part of your work, and it should not be underrated as it could lead to security flaws in your application. You should consider it a must if you're striving to provide a professional end user experience.

In this article, we'll go through the built-in form validation library in the CodeIgniter framework. Here are the highlights of today's article: [The use of ] basic form validation, cascading and prepping, custom error messages, custom validation callback, and validation configuration

They start off by covering some of the basic included rules using a simple controller and view. These checks include values being required, maximum length of text, alphanumeric only, valid email and checking that the value is a valid IPv4 address. The example also shows how to make use of the "cascading" rules and using the rules system to "prep" the data first. They walk through each line of the code that defines the rules talking about what it does and how they can be adjusted to fit your needs. They cover more in-depth how cascading and prepping work, how to customize error messages and create custom callback validation rules you can apply along with the standard ones.

tagged: codeigniter tutorial validation introduction cascade prep data custom message

Link: https://code.tutsplus.com/tutorials/codeigniter-form-validation-from-start-to-finish--cms-28768

Delicious Brains:
Announcing serializededitor.com: A Visual Editor for PHP Serialized Data
Jun 28, 2017 @ 09:22:23

On the Delicious Brains site there's a new post from Gilbert Pellegram announcing serializededitor.com, an editor specifically designed to help visually edit serialized PHP data.

I recently built a command line daemon in PHP to emulate AWS SQSD for the purposes of testing in Mergebot. As it turns out, one of the benefits of building a large, complex product like Mergebot is that there are pieces of the system that we need to build for the project that might be of use to other developers.

Today, we’re launching that system piece, a free online visual editor for PHP serialized data as serializededitor.com.

In this article, I’ll explain how and why we built this “side” project and how I overcame some of the challenges I faced when building this project.

He starts off with the problem they were trying to solve when creating the editor, mostly centered around determining the differences between two pieces of serialized data. They found something similar to what they were wanting but it didn't provide the "easy editiing" functionality they wanted. He then goes through some of the issues they bumped up against along the way: working with the data and PHP's unserialize, the creation of their own parser, the work to create the Vue.js frontend and re-serializing the data once complete.

They've also open sourced the project over on GitHub so you can clone it locally and contribute back.

tagged: serialized data editor project introduction github vuejs

Link: https://deliciousbrains.com/announcing-serializededitor-com-visual-editor-php-serialized-data/

Rob Allen:
Inserting binary data into SQL Server with ZF1 & PHP 7
May 22, 2017 @ 09:34:51

In an interesting mix of "old" and "new" Rob Allen as shown in this new post to his site how to push binary data into a SQL Server database from a Zend Framework v1 application.

If you want to insert binary data into SQL Server in Zend Framework 1 then you probably used the trick of setting an array as the parameter's value with the info required by the sqlsrv driver as noted in Some notes on SQL Server blobs with sqlsrv.

[...] Working through the problem, I discovered that this is due to Zend_Db_Statement_Sqlsrv converting the $params array to references with this code. The Sqlsrv driver (v4) for PHP 7 does not like this! As Zend Framework 1 is EOL, we can't get a fix into upstream and update the new release, so we have to write our solution.

He includes the code for the "hack" that you'd normally have to do to push the binary data into the database. Zend Framework v1 is EOL (end of life) so the Zend_Db_Statement_Sqlsrv class can't be updated. Instead, he writes his own replacement, creating a new adapter specific to the application that handles the input as the SQL Server driver is expecting. He then updates the application configuration to force the new adapter to be used when the ZF1 application needs to connect to the SQL Server database.

tagged: insert binary data sqlserver zendframework php7 tutorial adapter

Link: https://akrabat.com/inserting-binary-data-into-sql-server-with-zf1-php-7/

Laravel News:
Introduction to Seeding Data in Testing
Apr 10, 2017 @ 10:42:26

On the Laravel News site they've posted an introduction to seeding data in testing to help make your Laravel application testing easier and see "more correct" results.

Since seeding was released in Laravel 5.1, testing has become easier and quicker.

You can have ten users with each having a post or 1000 users with one or more posts inserted before the testing begins. In this tutorial, you will create a test case to test the user model and a seeder to seed ten users, and each is following one user into the database.

The tutorial starts with a migration to create a "users" table including a "follow user ID" field that tracks which user another is following. Next up is the creation of the User model with the methods to create the "follow" links between users. The make:seeder command is then used with this model to generate the seeder class and make 10 users with faked information. The db:seed command is used to execute the seeder and populate the data. Finally an example test case is created, first just testing that 10 users were created then refactored to test links between the users and the follow/unfollow functionality.

tagged: laravel seed data testing migration tutorial unittest model

Link: https://laravel-news.com/seeding-data-testing

Sameer Borate:
Accessing Google Page Insights in PHP
Mar 21, 2017 @ 09:45:12

On his site today Sameer Borate shares a tutorial showing you how to access Google Insights data via your PHP application with the help of the dsentker/phpinsights package.

Google Page Insights is a required tool to have when analyzing the speed and usability of your site. As you may know these metrics influence how google ranks your page in search results. If you frequently make changes to your web site designs than it becomes mandatory to check the metrics after each change to make sure that the design changes has not affected the score in any negative way. If you have many pages to test than manual testing can quickly become cumbersome.

Thankfully there are libraries that you can use to automate this process. Once such is given in this post which allows you to get Google Page Insight metrics using PHP.

He then walks you through the installation of the package (via Composer) and how to use it, along with your Google API key, to fetch the information for a given URL. You can get information for different environments (desktop vs mobile) and even a screenshot of the page that's under test. He ends the post with a helpful hint for those that might get a certificate error when making the request and how to fix it.

tagged: google insights data tutorial package install usage

Link: http://www.codediesel.com/api/accessing-google-page-insights-php/

Laravel News:
Installing Laravel in a Subfolder? Hide your .env file.
Mar 06, 2017 @ 09:42:59

On the Laravel News site they've posted an article with some reminders about installing Laravel in a subfolder including "hiding" your .env file.

If you are new to Laravel you might not be familiar with its directory structure and the reasons why it’s setup the way it is. If you look at the main repository it’s setup like this, and the documentation covers what each of these folders handles.

What is important here is the “public” folder. That is the ONLY directory you want to be exposed through the web. Everything else should be outside of your web root, this way people can’t access any of your important files through the browser.

He gives an example of an instance where a site was in a subfolder and, just by changing the URL, he was able to locate (and view!) the .env file complete with sensitive information. The rest of the post gives instructions on installing it in a subfolder, moving around a few folders and updating the front controller to change the autoload and bootstrap locations.

tagged: laravel subfolder sensitive data install tutorial

Link: https://laravel-news.com/subfolder-install

QaFoo Blog:
Extracting Data Objects
Feb 10, 2017 @ 12:16:36

On the QaFoo blog they have a new post offering some advice on extracting functionality to data objects and reducing the complexity of your application's interfaces.

Extracting data objects from your code will make it easier to read and write, easier to test and more forward compatible. This post shows you the two most common cases where introducing a data object makes sense and how to do it.

The first case covers the extraction when a method ends up with too many parameters. We've all been there and remembering the correct order and values for each (not to mention optional vs required). By making use of value objects you can reduce that down to one or two parameters that act as self-contained "containers" for the same values. They illustrate with a refactor of "product" search criteria into a "ProductCriteria" object. The second example show a refactor away from using an array as an input value and providing a bit more structure with a "Checkout" value object instead.

The post ends with a helpful hint about migrating from one method to the other in legacy systems using a "shim" method to handle the new case right alongside the old one.

tagged: data object refactor simplicity parameters array

Link: https://qafoo.com/blog/096_refactoring_extract_data_objects.html

SitePoint PHP Blog:
Using GDELT 2 with PHP to Analyze the World!
Dec 12, 2016 @ 12:16:15

The SitePoint PHP blog has a tutorial posted by Patrick van Bergen showing you how to analyze the world using a combination of PHP and the data from the GDelt (Global Database of Events, Language and Tone) database.

Are you interested in political world events? Do you want to play with one of the world’s largest databases? If you answered either of those questions with a yes, keep reading – this will interest you! This article follows up on the promise to use GDELT with PHP.

I will show you a simple example of how to use GDELT through BigQuery with PHP, and how to visualize the results on a web page. Along the way, I will tell you some more about GDELT.

He starts by briefly introducing the GDelt service, what kind of data it contains and how to make some sample queries with their BigQuery dashboard. He then moves more into the code, talking about some of the basic concepts of the data and setting up an account you can use for your queries. The example code uses the Google Cloud library to access the API and execute the query. Included are examples of querying metadata, the different datasets available and some visualization examples.

tagged: gdelt analyze world data bigquery tutorial googlecloud api

Link: https://www.sitepoint.com/using-gdelt-2-with-php-to-analyze-the-world/