News Feed
Sections




News Archive
feed this:

Looking for more information on how to do PHP the right way? Check out PHP: The Right Way

NetTuts.com:
Understanding and Working with Relationships Between Data in WordPress
August 01, 2014 @ 09:21:54

NetTuts.com has posted the second part of their series looking at the "guts" of a typical WordPress installation. In the first part they gave an overview of the structure and contents of the various database tables. In this second part they get more into the relationships between them.

In the first part of this series on data in WordPress, I gave an overview of the WordPress database tables, and which tables are used to store what kind of data. In this second part, I'll outline how WordPress manages the relationships between that data. As you'll see, WordPress uses three kinds of data relationship - one-to-one, one-to-many and many-to-many. I'll look at each of these and what they mean for your WordPress site.

He goes through each of the relationship types and includes examples from the WordPress database to illustrate them. He then gets into a bit more depth, talking about the specifics of some relationships like: posts-to-users, posts-to-comments, comment-to-comment and the structure of the many-to-many relationships too.

0 comments voice your opinion now!
wordpress series data database relationship tutorial part2

Link: http://code.tutsplus.com/tutorials/understanding-and-working-with-relationships-between-data-in-wordpress--cms-20632

NetTuts.com:
Understanding and Working with Data in WordPress
July 29, 2014 @ 11:28:05

On NetTuts.com there's a new post for those new to WordPress (or just wanting to figure out more about the internals of the tool) showing how some of the data is structured and how to work with it.

Most WordPress users never come into direct contact with the database and may not even be aware that it's constantly working to populate their site. When WordPress serves up any kind of page, be that the home page, a single post or page or an archive, it's accessing the database to bring up content that editors and administrators have added to the site. In this series of tutorials I'll look in detail at different aspects of the WordPress database.

This post is the first in the series and provides an overview of the database and what kinds of information each one contains. They talk about content types and provide the table structure and relations in a handy graphical form (an ERD). They then go through each of the tables and describe what the data is including link tables, joining the content in different places.

0 comments voice your opinion now!
data wordpress introduction database table erd overview

Link: http://code.tutsplus.com/tutorials/understanding-and-working-with-data-in-wordpress--cms-20567

NetTuts.com:
Working With Databases in Symfony 2
June 19, 2014 @ 12:45:20

In the next part of their Symfony2 screencast series, NetTuts.com has released their introduction to using databases from inside the framework-based application. Other posts in this beginner series (all authored by Andrew Perkins) can be found here.

Today we'll continue working with Symfony 2 where I'll show you how to get started working with databases. I'll be covering setup and config, generating the database, generating your getter/setter methods and table schema, and how to persist data from a form, into a database.

The video walks you through the setup and use of a MySQL database and Doctrine (from the command line) to create the database structure. The use the sample application that's been evolving through a few of the screencasts. In this application, they show how to connect the "Person" entity to a database table through annotations. Included is the code and commands to set up the "Person" entity correctly and how to fetch/save one from a simple controller method.

0 comments voice your opinion now!
symfony2 screencast series database tutorial

Link: http://code.tutsplus.com/tutorials/working-with-databases-in-symfony-2--cms-21461

SitePoint PHP Blog:
Google's BigQuery Provides Free Access to GDELT
June 03, 2014 @ 10:19:31

In this recent post to the SitePoint PHP blog Bruno Skvorc points out a recent announcement from Google that the GDELT database information is now available via their BigQuery functionality.

The Global Database of Events, Language and Tone is one of the largest datasets on the planet. It is the quantitative database of human society, relying on thousands of news sources from every corner of the globe dating back to 1979. [...] Google BigQuery, "Google's powerful cloud-based analytical database service" is, basically, the world's fastest SQL engine, and it's completely free for any and all uses of GDELT. Due to the sheer power of BigQuery, you can get results on GDELT queries in near real-time and any permutation of fields and values you can think of won't be enough to bog it down to a halt - unless you really mess things up and go against the grain.

He goes on to describe the GDELT database and what kind of information it contains. He also includes an example query and the kind of data it returns (screenshot). He also links to a PHP-based library that you can install via Composer and use API keys to access their search endpoints.

0 comments voice your opinion now!
gdelt database bigquery access library sdk api

Link: http://www.sitepoint.com/googles-bigquery-provides-free-access-gdelt/

Matthew Turland:
Customizing Codeception Database Cleanup
May 12, 2014 @ 11:15:24

If you're a Codeception user, you'll find Matthew Turland's latest post interesting. In it he shares a way to customize database cleanup between the tests. Codeception handles it a bit differently that how PHPUnit's Db module does.

Recently, I was looking into ways to speed up the runtime of the test suite at Blopboard. We use the Codeception framework to write functional tests for our REST API, part of which entails putting the database into a known state using Codeception's Db module. The behavior of this module is similar to that of the PHPUnit Database extension with one exception: where PHPUnit only truncates tables and leaves their schemas intact, Codeception removes the database structure and expects the SQL dump it uses to recreate it between tests. I must admit to not understanding this design decision of Codeception, nor attempts to clarify it.

He admits that his solution is "a bit hacky" but it does work to truncate the table rather than drop the entire schema and wait for a rebuild. His "DbHelper" class is used in place of the Db module. He traced through the execution path of the Db module and found a "hook" where he could override the "cleanup" method to prevent the schema drop and replace it with a truncate. He also includes code for a suggested addition to Codception that would handle the same thing in a more integrated way.

0 comments voice your opinion now!
customize database cleanup codeception tutorial schema truncate phpunit

Link: http://matthewturland.com/2014/05/09/customizing-codeception-database-cleanup

SitePoint PHP Blog:
Database Versioning with Ladder Migrations
April 22, 2014 @ 10:48:41

The SitePoint PHP blog has posted another tutorial looking at database versioning (see this postfocusing on Ladder migrations. Ladder is a simple PHP-based way to write migrations with rollbacks in a clear, easy to read format.

Version control systems are invaluable for tracking changes in your code, particularly when you're working in a team. However, most applications don't consist solely of application code. Managing changes to the database has always been a little more challenging, particularly when you're adding new features which require changes to the schema. [...] One solution is to move responsibility for creating and modifying the database schema into code, using migrations. That way, changes can be managed along with the rest of your application, and features we take for granted in version control - such as being able to compare versions and keep an audit trail - can be used for database changes.

He introduces the Ladder tool briefly, shows how to get it installed/configured and gets into writing a first simple migration. It creates a "users" table with two columns and comes with both "up" and "down" methods to make rollbacks easier. Ladder also provides functionality for database seeding, pre-populating the database tables with sample data either from hard-coded values or from a CVS file.

0 comments voice your opinion now!
database migration ladder versioning tutorial project

Link: http://www.sitepoint.com/database-versioning-ladder-migrations

SitePoint PHP Blog:
Database Versioning with DBV
April 21, 2014 @ 11:11:45

In this new post to the SitePoint PHP blog today Wern Ancheta introduces you to a tool that can help with database versioning, DBV. DBV is a tool developed by Victor Stanciu and made available on GitHub.

It's good practice to always use a version control system in any of your projects. Be it a side-project in which you are the only developer, or a team project where five or more people are working on it together. But the idea of putting your database into version control isn't really that widespread. Often times we take the database for granted. But like the source files in our project, the database is constantly changing too. That's why we also need a way to track the changes that we have made and easily share it to other members of our team. In this article we will take a look at DBV, a database version control system written in PHP for MySQL databases so you need to have PHP and MySQL installed before you can use it, along with a web server like Apache or Nginx.

He steps you through the installation (via an installer and configuration through the "config.php" setup file. The system keeps track of lots of different changes including new tables, updated field descriptions, additional views, stored procedures and functions. He includes some screenshots of the UI and goes through the workflow of adding new tasks and syncing with a remote database server.

0 comments voice your opinion now!
database version tutorial dbv github

Link: http://www.sitepoint.com/database-versioning-dbv/

PHPBuilder.com:
Using PHP Configuration Patterns Properly
April 16, 2014 @ 11:52:11

On PHPBuilder.com today they have a new post showing different configuration patterns for getting localized settings into your applications. They show the use of INI files, PHP scripts, text files, XML data and a database call.

PHP is a cross platform language. It is a server based application so we must think about the configuration settings of the PHP software. There are various ways of creating configurable PHP applications. The configuration flexibility comes as a built in feature in PHP. But we must understand the requirement clearly before making an application configurable. This article explores different PHP configuration patterns and their implementation.

For each of the options mentioned, there's a brief description of what the method is, some of the common uses and a code example showing a basic implementation. The database pattern is the only one without a code example as the database interface varies widely from application to application.

0 comments voice your opinion now!
configuration pattern ini script text xml database

Link: http://www.phpbuilder.com/articles/application-architecture/using-php-configuration-patterns-properly.html

Sameer Borate:
Calculating descriptive statistics in MySQL
April 08, 2014 @ 10:46:22

Sameer Borate has shared some examples of how to generate some meaningful statistics about the contents of your database in a new post to his site today.

Descriptive statistics can be quite useful for simple analysis of records in a database. For example, to calculate average numbers of sales or products for a particular duration, or the Variance of sales for a month etc. We can easily calculate standard descriptive statistic measures in MySQL such as MEAN, SUM, STANDARD DEVIATION, VARIANCE, MIN and MAX using built-in functions.

He includes both the SQL and a bit of PHP code showing how to get these statistics (based on a simple data set of student scores). The PHP is required to more correctly evaluate the median and mode values as it's easier to evaluate those in PHP.

0 comments voice your opinion now!
mysql database descriptive statistics mean sum mode median

Link: http://www.codediesel.com/data/calculating-descriptive-statistics-in-mysql

SitePoint PHP Blog:
Building a Simple Blog App with MongoDB and PHP
March 14, 2014 @ 09:19:36

On PHPMaster.com there's a recent tutorial posted showing you the creation of a simple blog application with MongoDB + PHP. It's a basic overview, so it's mostly about creates and reads, but it does help get things working.

If you want to create a blog using MongoDB and PHP, this article will teach you. [...] The reason I chose to build a blog application is because it is a basic CRUD application and it is very suitable for easing into PHP and MongoDB web development. We will build a plain user interface using Bootstrap with simple textboxes and buttons. A MongoDB database will store all the content.

He starts off by introducing MongoDB and some of the basic concepts around databases, collections and documents as they relate to it. He then moves into the installation process, getting and configuring a simple MongoDB instance running on localhost. He helps you get the MongoDB PECL driver installed for PHP and includes a bit of code to test the connection. Finally, he gets into the blog example itself and includes the full code to get it up and running.

0 comments voice your opinion now!
tutorial blog application sample introduction mongodb database

Link: http://www.sitepoint.com/building-simple-blog-app-mongodb-php/


Community Events





Don't see your event here?
Let us know!


unittest configure bugfix api language release laravel developer community application install podcast list series code threedevsandamaybe introduction interview library wordpress

All content copyright, 2014 PHPDeveloper.org :: info@phpdeveloper.org - Powered by the Solar PHP Framework