Just write the PHP code and save it with a *.php file extension. If you want it to run on your computer locally...
PHP:
* Run PHP on your own computer: The easiest way to do this is to install a complete package like XAMPP. This contains the Apache Web server, along with PHP and the MySQL database engine, in one easy-to-install package. XAMPP is available for Windows, Mac OS X, and Linux. (A popular alternative on Windows is WampServer.)
* Run your PHP scripts on your Web host: If you already have a Web hosting account that supports PHP then you can upload your PHP scripts via FTP and run them on the Web server. The advantage of this approach is that you don't have to install anything; the disadvantage is that it's slower to write and test your scripts.
Copy and paste the script code listed above into a new document in your text editor, then save the file as hello.php in the document root folder — that is, the top level of your website — on your hard drive. If you're not sure where your document root folder is then consult your Web server manual. Common locations include:
* XAMPP on Windows: C:/Program Files/xampp/htdocs/
* XAMPP on Linux: /opt/lampp/htdocs/
* XAMPP on Mac OS X: /Applications/XAMPP/htdocs/
If you want to run the script on your Web hosting account rather than your own computer then you'll need to upload the script using FTP instead.
Free online PHP tester: http://forumferney.free.fr/stester.html
PHP Tutorial - Databases in PHP, An Introduction: http://www.htmlgoodies.com/beyond/php/article.php/3511346
Tutorial: Installing Apache and PHP Under Win32: http://www.htmlgoodies.com/beyond/php/article.php/3473471
PHP Manual - http://www.php.net/manual/en/
A simple tutorial - http://us.php.net/tut.php
Test scripts: http://www.karakas-online.de/EN-Book/test-scripts.html
Simple Test for PHP: http://www.lastcraft.com/simple_test.php
Ron