Author Archive
Tips & tricks: how to optimize a website for mobile devices
The huge development and usage of mobile devices makes us pay a close attention to this market of potential clients that will accede the website we’re creating with a far lower resolution respect to the standards (320 x480 tells you something?). In this article I’ll give you a few hints on how it’s possible to optimize the website or part of it, for a better usabilty on these mobile devices. In the following examples I’ll use iPhone as a reference.
How to implement an online payment: First step (1/6)
In this series of articles we will see how it is possible to implement online payments in your own website through a credit card. We will be relying obviously on a company specialized in on-line transactions and in our case...
How to order the elements with jQuery (2/2)
In the previous article we saw how the sortable method allows the sorting of a list of items through dragging. We just saw a "visual" implementation though. But if we want the sorting to be lasting, hence it remains the...
Database structuring: the normalization
In the previous article we treated the important concept of the primary key. Today we are going to see in theory what are the main measures (which are called normal forms) to be implemented in the database to make them more...
How to order the elements with jQuery (1/2)
In this article we’ll treat the fascinating and always increasingly used the technique of the item ordering in an html document. The classical example could be the management of WordPress widgets. To activate a widget we have to drag it...
Database structuring (1/3): The primary key
We start today with a series of articles on database structuring. Throughout years of militancy in various support forums, I have realized that there are many users who are perfectly able to manipulate databases, even with very complex queries, but...
PHP Tips – Warning: Cannot modify header information. Let’s get things straight
Tell me the truth: you have had to mix it up with this error at least once, haven't you? In this pill we'll get things straight, once and for all, how this error occurs, how to avoid it and, if...
Elements of cryptography: The asymmetrical cryptography
In the previous article we saw how the symmetric cryptography occupied much of the history of this discipline. However in modern times it has become increasingly urgent the need to develop a system that goes beyond the single key to...
How and when to use jQuery’s serialize method?
In various articles we have written on jQuery, it has always been evident how this framework contributes to the simplification of code development. In this article we will see how knowledge of all these instruments put at our disposal can...
PHP tips & tricks – how to determine the operating system of the web server
A question that I often hear is: How can I determine the operating system of the server? Many strange answers are given to this question, the most common one involves the application of improbable regular expressions to the variable $_SERVER[‘SERVER_SOFTWARE’]....
PHP Tips – Manage correctly file inclusion
In this article we’ll treat a quite simple argument but if badly managed can lead to big problems, the topic is the inclusion of files. According to my experience I established three golden rules that should be enough; if you...
Elements of cryptography: The symmetrical cryptography
In the previous article we saw a particular case of the cryptographyapplication, that is hashing. We saw how useful it is in coding passwords or to assure us the validity of a downloaded file. But this technique isn’t applicable when one...
Elements of cryptography: Hashing algorithms
Don't be scared, keep reading! I decided to start the article in this way since reading on the same title words such as cryptography and hashing algorithms can be intimidating. My aim, in this series of articles dedicated to cryptography,...
How to create chained select with PHP and jQuery?
In this article we'll talk about the chaining of select also called select cascade. It is a procedure that we often find on the web and it consists in giving the user the possibility to find a specific data through...
Do you want to implement ajax features but you don’t know how?
Ajax is always more and more diffused and common in various websites, at times even when it's not necessary, but after all this happens somehow with everything. If you are attracted by this technology but you don't know where to...
How to build a dynamic and maintainable navigation
In this article we will see how we can create a navigation that is able to highlight the current page in menu items like this example. As you can see, the style of the menu item applied to the page displayed is...
The Obscure Art of Drag and Drop: How to Drag and Drop Objects?
Dragging and dropping objects in a web page is a totally fascinating property and surely impressive. Those who are familiar with WordPress administration panel know for example that in order to activate a widget enough dragging it on the sidebar...
The mod_rewrite and the magic of rewriting the URL (second part)
In the first part of this article we’ve seen two simple examples of url rewrite. What we will do now is to insert the name of the product in the url. Why? Since the rewritten url will be the one...
How to convert an XHTML layout in a Joomla template?
In this article we can be, starting from an existing layout, XHTML, create a template for Joomla in a few easy steps. We will use the layout corporate / business created by Sara and resumed later also by Justin in an article that explains how...
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