Articles by Amrit Hallan
This is what you often see on various web sites - when you hover your cursor over an image, it metamorphoses into some other image. For instance, a simple two-dimensional button changing into three-dimensional with shadow underneath.
Sorting an Array in PHP
Now and then you need to sort your arrays alphabetically or numerically, if nothing else, then just to apply some programming logic and attain the desired output. You can sort an array in PHP by using two functions...
Setting Up Apache, PHP & MySQL On Windows
I'm writing this article assuming you're running Windows XP on your computer. Even if you are not, you can use this article to setup these three on almost all basic Windows flavors.
Programmatically Deciding Which Database to Connect in PHP
Most of the time, while working with PHP and MySQL, we have to switch between the local PC and the remote server. To connect to a database, I often used the following function...
Looping through form elements using JavaScript
An example of looping through all the form fields could be checking and unchecking all the check boxes present on a page (checking all the records to delete, or adding all the items to a shopping cart, for instance).
JavaScript Equivalent of PHP Explode Function
In PHP we can easily break a long string into smaller parts by using the explode() function of PHP. In runtime, this function works like this...
Dumping Form Information Onto a Web Page
There comes a time when you have to create very complex, very comprehensive online forms consisting of 30 to 40 fields. While debugging the form output, or while validating the individual form fields (for example, if all the fields have been filled), you need to dump all the form field with their names and with their respective values onto a web page so you can see exactly what is coming from where. This tutorial tells you how to do that.
Disabling the Right-click Mouse Button
Sometimes you don't want the visitor to be able to click the right mouse button and do all the stuff associated with it. Although personally I'm not in favor of such gimmicks and limit the visitor's independence, you learn something new in this tutorial.
Decision Making and Looping
A common feature of any programming script/language is, its ability to perform repeat tasks until a condition is satisfied, and, its ability to take decision. After all, there can be no logic if a program cannot decide what to do and what not to do (sounds like a Shakespearean statement).
Adding records to a MySQL database using PHP
There comes time when your website tends to transcend the boundaries of mere brochure type looks. There is a need to interact, to seem dynamic, and to respond according to your visitor's behavior. You also want your visitors to go through a list of offerings that run into hundreds. Creating hundreds of web pages having a uniform layout for hundreds of products can become an overwhelming task.
Creating Rollover Effect Using CSS List Menus
Ever seen those fancy links where they change the appearance as soon as you place your mouse cursor on them. See a simple example of a rollover effect here. The CSS definition of this simple example goes like this...
Calculating Difference Between Two Dates Using PHP
Suppose you want to know the age of a person given her birth date. Let’s say her birth date is "09-23-1969". Although in this case you might say that we don’t need a program to compute the age, but assuming there are 1000s of records in your database...
Finding the Length of a String in JavaScript
When I used JavaScript to find the length of a string for the first time, I kept testing a function something like str.length(), whereas in JavaScript length is not a function, it is a property of the string object.
Converting to Lower Case and Upper Case in JavaScript
To convert a string to lower case in JavaScript we use the following steps...
Dumping Form Information Onto a Web Page using ASP
There comes a time when you have to create very complex, very comprehensive online forms consisting of 30 to 40 fields. While debugging the form output, or while validating the individual form fields (for example, if all the fields have been filled), you need to dump all the form field with their names and with their respective values onto a web page so you can see exactly what is coming from where. This tutorial tells you how to do that...
