PHP sits between your browser and the web server. When you type in the URL of a PHP website in your browser, your browser sends out a request to the web server. The web server then calls the PHP script on that page. The PHP module executes the script, which then sends out the result in the form of HTML back to your browser, which you see on the screen. Here is a diagram which illustrate the process.

PHP Process Diagram
What are PHP benefits?
PHP is a free open source language. That means you don't have to pay thousands of dollars in licensing fee to acquire PHP. Best of all, it is easy to install. The most striking feature of it is that it is easy to learn. PHP is used by millions of people and developers around the world. There are thousands of websites on the internet which are written using PHP. One primary example is Yahoo! Bookmarks. PHP has an ever growing community. There are thousands of websites, forums and community websites dedicated on PHP. I built this site to share my PHP examples, recourses and code with you that you can use on your website easily. I will also show you how to build your own PHP website with all the bells and whistles from ground up. You will also learn the fundamentals of PHP and write your own PHP code.
What I need in order to build PHP driven sites?
You need PHP Hosting
You need PHP and MySQl hosting. Good news is, you can find an affordable php and mysql host on the web anywhere. There are tons of web hosting companies trying to compete for your business.
I recommend Netfirms Hosting. For just $9.95/mo
, you get PHP4 and PHP5 support, 30 MySQL Databases, 250GB of web space to store your files, videos and images, 2000GB of Data Transfer (plenty for even high traffic websites), 2 FREE Domains, and you can HOST UNLIMITED WEBSITES on the same account and best of all the BEST and QUICKEST customer support I have seen.
I recommend Netfirms because I use Netfirms hosting myself and have no complaints. This is the best hosting I have used so far. They also have a $4.95 plan called the PLUS hosting plan. Just go here and click on their specifications or read the review here

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