Using a combination of PHP and MySQL functions, you can query an online database for numerical values, add them together and display the results on your Web page.

Database support PHP offers database support in a couple of ways. First, it provides native support for a number of databases. Below, I've listed some of the more popular ones and provided links ...

Use the PHP extension for MySQL to access data from the MySQL database.

Or, maybe you want to search the subject line and the content of a set of forum posts for certain keywords. Query multiple columns in a mySQL database using PHP to issue the mySQL commands.