In this tutorial we will go through doing basic operations with Date/Time functions in PHP and MySQL and learn how to keep time zones in sync inside an application. We'll start by understanding why application level synchronization between the MySQL and PHP time zones is necessary.

In today's tutorial I will try to explain two of the basic principles of Object Oriented Programming in PHP - class visibility and object inheritance.

I remember that when I started out I had difficulties understanding these things, so in this tutorial I'll try to expose a different angle for looking at some of the confusing aspects of OOP. Hopefully this approach will make everything clearer for you as it did for me ages ago.

In this post, I will try to explain JavaScript variable scopes and hoisting as well as the many implicit gotchas. To make sure we don't bump into any sudden, unforeseen problems while coding, we must really understand these concepts. Otherwise the trivial task of reading more advanced JavaScript code can prove an overwhelming and most times an unsuccessful attempt.

The scope is the "bucket" in which a variable exists and it is useful because it catalogs the "buckets" from which you can access a variable and if you actually have access to it from within a particular "bucket".

This tutorial is not intended as a comprehensive package that fully exploits the GitHub API. It is however, a "guide" that is meant to show you how OAuth2 works by providing a practical example through the use of the GitHub API.

Using this package will authenticate users through their GitHub account by checking their public profile which in turn would represent enough to start a session on the website that creates the request. In this package I use the Slim Framework to read data from requests and configuration parameters, but the thing can be adapted to work with any framework.

This article was originally written in 2010. This is an updated version on how to do simple Ajax requests using jQuery

Ajax is a very nice tool for web developers. It helps you interact with the visitor without reloading the page. Searching the internet you will find various Ajax code samples that are simply too complicated and some are too specific. I added some comments that will better explain what the code does and how it can be tweaked.