One of PHP's strengths is the ability to easily inject variables, values and attributes into HTML code to create dynamic Web pages.

Add all the code and content you want to appear in this file. For example, it might be a list of links or PHP code that creates widget capabilities for your site.

An extension is a piece of code written in C or C++ which will be included into the PHP core when PHP starts. Normally, you have some more native functions available after including an extension. PHP ...