What is a PHP Library and how can I create mine?
<p>I know a lot of libraries like GD Library, Google Charts Library, and the rest. But this question often comes back to me. </p>

<p>What really is a PHP Library. Also, how can I build it?  </p>

<p>I also noticed that classes and functions are the major backbone thus making development easier. I want to build a library for a Games Web App, how do I start....  </p>

<p>Please I need code examples.</p>
