1. <?php//What is PHP??> Presentation by Helen Pitlick

4. free and open-source

5. a way to produce dynamic web pages (sites that are unique to the user or continuously updated).

6. clear and easy to read and de-bug, as well as flexible, scalable, and extensible.

7. used by 20 million websites and 1/3 of the web's servers

9. PHP scripts are plain-text files with PHP instructions; the language borrows from C and Perl, and can be imbedded into HTML. The pages are treated similarly to HTML pages. How it works: you write code, the server reads it, and then replaces it with content in the browser. image by Wesley Fryer

11. allowing developers to include files, like GIFs, PNGs, and JPEGs

14. it's flexible (compared to Perl or C)