What Is PHP?

The full form of PHP is Hypertext PreProcessor and is a server-side scripting language. The PHP code can be combined with regular HTML tags and parsed on the server. The creator of PHP, Rasmus Lerdorf first displayed the language in the form of a Perl script . In 1997 it was adapted by Andi Gutmans and Zeev Suraski to use a C-written compiler. They completely reconstructed the original PHP into the web language that we know and use today.

Uses of PHP

It is used in the creation of dynamic web pages. Web developers like it because of its fast parsing and flexibility and versatility. PHP is a popular tool for managing a form's data after it is submitted and comes built in with many different interfaces and API's. It has database capability built into the language, the most common database being MySQL. Typically the PHP can connect to any SQL enabled database.

The Syntax of PHP is similar in structure to Perl and C where curly braces { } define blocks of code and semi-colons specify the end of a statement PHP is as easy to learn as Perl. It maintains all the traditional loops, if/else, and subroutines that are expected in a programming language. One difference between the two is that the code'?' is embedded in with the HTML; you could however, use a separate file. The PHP code is different from HTML code by use of the opening and closing tags. When it finds a PHP file, it tells the server to scan through for these tags, and execute the code in between them. The server recognizes a PHP enabled file by its extension, .php. These are essentially HTML files with PHP codes in them.

Getting Started

To start PHP requires a server with PHP installed and a simple ASCII text editor such as Notepad or VI, eMacs, Kate, etc. for a UNIX/Linux machine.

What are the problems faced by PHP?

It is case sensitive. For example if you name a variable $MyVar, you cannot call it as $myvar or $mYvAr. In case you forget to close your curly brackets, then it helps to indent lines inside the curly braces so that any missing braces can be spotted easily.

Website Accessibility means the website accessible to all the users in the web including visitors with disability. Many website owners know that their website is available in the internet for visitors to access information but possibly may not know whether their website is easily accessible and even be unaware about Disability Discrimination Act (DDA).

According to Disability Discrimination Act (DDA), all the business should make their services accessible to disabled users. There is also a section in DDA which addresses that if a business offers an online service, even the information is on a single page, then the business is responsible for making an effort to make this information accessible to disabled users.

All new websites that are designed and developed should now follow the W3C (World Wide Web Consortium) and Web Content Accessibility Guidelines (WCAG) against which the accessibility of the website is measured. But when the website is found isn't complaint, then anybody can sue you legally, if they want to.

By following these guidelines, you enhance the professional look of your website, provide access to visitors who previously had not no choice, thus increasing your business prospects and finally not to forget, your business is legal.

Some basic Guidelines to increase the accessibility of the visitors

Validate HTML and CSS: To check if the HTML and CSS used is valid, W3C validator can be used. It is necessary that websites are checked as the validator automatically tells you about any errors and accessibility issues in the web pages.

Image and alternative text: For browsers which don't support images, alternative text can be used to explain what the image is about as the user will only see the text.

Resize font text: Most of the internet browsers use Internet explorer to search for information. If the size of the text can be increased by choosing the font size to the largest then it means that your website is accessible to visitors.

Use of Java script: Websites are not easily accessible when java script is disabled. Mostly people have the java script support switched off, if that's the case then make sure that you use the Java script sensibly and unnoticeably.

Check for the following,

1. Website is accessible without the use of a mouse

2. Website has a Sitemap

3. Website has link text relevant to the content (blind users use tabbing while browsing websites from one link to the other)

As you know we are all fond of the easy things in life. We all like the path of least resistance. The easier we can find our way the better for us. The more complicated something appears the less we understand it and as consequence the less we like it.

With this in mind we need to approach the building of a website in a way that will avoid all of the above. Your website will need to be laid out in a way that understands the visitor's needs and addresses them clearly and concisely.

The question then becomes how to do this? When considering what subject to build your site around you will need to start your research on the forums relative to the topics of choice. For example if your passion relates to golf then you will need to visit forums where this subject is discussed.

Here you will need to look at what questions are being asked and where the people posting to this forum are having difficulty. Then you will need to get engaged and try and help. Here is how you could do this. Create a signature that links back to a free blog that asks the question "what is the biggest problem you face when it comes to golf"

On your free blog you could ask other questions. Your blog then can have a form where people can submit their questions. Of course you would need to offer them something to do this that will help their game and of course you will need to offer it for free.

Based on this you will be gathering actionable intelligence relative to your target market. With this information you can then build a website that addresses these concerns and provides a product that you are either affiliated with or that you have created yourself.

Now that you have this information you can build a real website that can generate a real income in multiple ways. You will want to build a site that is structured properly for the search engines and one which is easy to navigate for your visitors.

To conclude if you lay the groundwork properly then the rest will fall into place.