A few minutes ago, I noticed one strange thing when I did my PHP web application development.The situation is described below:I want to display a user's profile using a query parameter user=user_id as the parameter. And also the session variable when user logs in  is $_SESSION["user"].So before displaying the user's profile, I need to either get the query string parameter user and create a local variable called $user and assign value to it as $user=$_REQUEST["user"].Here comes the strange thing,every time after the local variable $user is changed,the session variable $_SESSION["user"] is ...

First off, welcome to the fraternity. There aren’t too many people who want to create stuff and solve problems. You are a hacker. You are one of those who wants to do something interesting.“When you don’t create things, you become defined by your tastes rather than ability."– WhyTheLuckyStiffTake the words below with a pinch of salt. All these come from me – a bag-and-tag programmer. I love to get things working, rather than sit at something and over-optimize it.Start creating something just for fun. That’s a great start! There’s no way you ...

Here the dump of my ultimate collection of online Web development resources and directory, oriented for the Front-End user Interface (UI). HTML5 and all related open standards are moving fast, but for now, building a whole Website/WebApp on top of that can be very inconsistent, especially across various browsers experiences. So… how to embrace new awesome web technologies ? Now, as Web Developers and Designers, we have to build on top of more stable framework. It’s here that come JavaScript jQuery, acting like interface into browser’s implementations. That how we can ...

I remember it like it was yesterday. It was the year 2000, Dr. Pargas was standing at the front of our data structures class talking about some data structure-y topic while an SSH session was projected on the wall in front of us. Someone asked a question, and he said something along the lines of "Well, if you want to be a real computer scientist you need to start using vi". I think he was smiling as he said it, and in hindsight his statement wasn't even slightly true, but being young and easily influenced like I was I went back to my dorm room and immediately took up training myself how to use...

1.- The all code is crap, except mine, attitude.I have bad news for you buddy, all code is crap. No matter how much effort you put on it, there is always a majority of programmers who are going to think that your code sucks and that they could have done it 10 times better. I have already covered this topic in previous posts, you can find more information of what exactly I mean when I say that all the code is crap here and here.How to fix it: Don’t criticise others people code, it could be yours the one in the spotlight, try to make objective and professional observations instead, but do...

The getKeyChar method always returns a valid Unicode character or CHAR_UNDEFINED. Character input is reported by KEY_TYPED events: KEY_PRESSED and KEY_RELEASED events are not necessarily associated with character input. Therefore, the result of the getKeyChar method is guaranteed to be meaningful only for KEY_TYPED events.For key pressed and key released events, the getKeyCode method returns the event's keyCode. For key typed events, the getKeyCode method always returns VK_UNDEFINED....

Everyone who's been programming professionally for a while knows the standard format of the technical interview. You go in, there's a whiteboard in the room, and you write code on it to answer questions.Everyone also has the same basic complaints about these interviews. In a normal work environment, you have access to an API or search engine, but at a whiteboard you don't. Whiteboard questions generally don't include much in the way of overall design, and they're typically limited to simple algorithms, so they don't really test all of a candidate's skills. And let's be honest, programmers tend...

One day, you're browsing through your code, and you notice two big blocks that look almost exactly the same. In fact, they're exactly the same, except that one block refers to "Spaghetti" and one block refers to "Chocolate Moose." // A trivial example: alert("I'd like some Spaghetti!"); alert("I'd like some Chocolate Moose!");These examples happen to be in JavaScript, but even if you don't know JavaScript, you should be able to follow along.The repeated code looks wrong, of course, so you create a function: function SwedishChef( food ) { alert("I'd like some " + food ...