Functions are used to perform a well defined task that is normally repeated at various places within a web site, web application, or other software application. The function sometimes needs certain information before performing its task, and sometimes returns a value to the calling page or program.

An example of how to use a simple function in PHP:

 function showMessage() {
echo "{$_SESSION["message"]}"; }

The above example shows a very simple function that displays the contents of a session variable called 'message'. The idea being that while a user is using a web site, etc, various messages are generated and stored in the 'message' session variable. Whenever the showMessage function is called, the contents of the session variable are displayed. So, for example, when the user logs on, you could display a message saying that they have done so. Likewise, when they log off, a different message could be displayed.

Calling a function

To call the showMessage function, you would just need to include the line:

showMessage()

in the web page (wrapped in php tags to distinguish it from normall HTML).

Passing values to a function

Often, a function requires one or more input values in order to perform its task. For example, take the following example that takes two numbers as input, and adds them together. The result is then returned to the calling web page or program.

function addNumbers($number1,$number2) {
$answer = $number1 + $number2;
return $answer; }

In the calling program we would have something similar to the following:

$number1 = "5";
$number2 = "6";
$sumOfNumbers = addNumbers($number1,$number2);
echo "$sumOfNumbers";

Obviously, in a real program you would not have the numbers hardcoded like this, but they would be obtained from user input or by some other means. Notice also that although the name of the returned variable is $answer, the calling program makes no reference to that. We could, if we wanted to, change the calling program to:

$answer = addNumbers($number1,$number2);
echo "$answer";

which might make things slightly easier to understand.

No matter what site you build it will never be able to make money unless it gets traffic. You ask anyone online who is either new or intermediate what their biggest challenge is. The majority would say that getting traffic to their site is their number one priority.

So when building a site you will naturally want to build it in a way that will help this to happen. In order to do this you need to research extensively what way you will be able to get in front of people searching for products or information relative to your sites theme. You will need to research markets somewhat relative to your interests. For example you may be interested in travel.

Some guru's say you should not necessarily build a site around something you are interested in - instead you should build a site around a subject that will make you money. While this is understandable many people would be challenged to keep up the motivation doing something they do not like when they are starting out - because at this point there will be very little if any money coming in.

What you can do is pick a subject of general interest and then find niches within that which are profitable. This way you have the best of both worlds helping you to stay motivated and make money at the same time.

So your primary goal is to build a site that can compete with others and make you money. Develop the site in a way that the search engines will be able to understand and your visitors will enjoy. This way you will build relationships and as a result make money. To learn more on how to put all this together select any of the following links.

Selecting a domain name - Domain name provides an identity to a website. It confirms your space on the internet as it denotes the name of your website that is entered by a user in search box to land on your site. For instance- yahoo.com, sujivan.org, usa.net and so on. Usually the user should opt for a domain name that ends with .com, .net or, org. These are the most common extensions used by the surfers. Many companies offer domain names at discounted rate, so keep an eye on online discounts if you want to purchase domain name at discounted price.

Web Hosting - Every website that is being launched requires a web hosting for database support and web application. Many service providers offer free web hosting service, this should be avoided and instead go for companies providing this service by taking some nominal monthly fees. Otherwise chances of the host offering free web hosting to put up their banner on your site is there which may prove harmful for your business. If the user does not have much traffic they can go for shared hosting and when increases switch on to solo web hosting traffic.

Website design and development- Next step is to hire a professional web designer to design your site. Take a note that the designer should have knowledge of HTML which is basic requirement for web designing. If you desire increased traffic to your site make sure that it is pleasant looking, fast downloadable and dynamic. Once web design part is complete then move for website development. Hire a professional web developer to develop advance functionality of your website.

Content creation - Content management and creation is one of the most important aspects of any website. It can be considered as heart of any site, as relevant information, goals, objectives, discussions, etc fall under the content category. Can you imagine any website without content? Not possible, it's the backbone of every site whether personal or commercial. The content should be to the point and relevant, devoid of any grammatical errors.

Search engine optimization - To get increased traffic to your website, it is essential that it is visible in first or second page of major search engines like Google, msn and yahoo. This can be done by search engine optimization of certain keywords that the user is likely to enter in the search box. Higher rank in the search engine lands more visitors at your website. You can hire an SEO expert or give this work to your web development company who has this facility.

Thus these were certain essential key steps for starting up a successful website. These are followed by other website enhancing tools like online marketing, multimedia designs, graphics, flash, ecommerce, database application, logo design and website maintenance.