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. You have to use the functions in ...

Multiple Field Search With PHP and mySQL. Search engines are integral features to any well designed website, but how well does your search engine work?

Might want to check your /etc/php.ini and make sure you have the "extension=mysql.so" uncommented (restart Apache if you make a change). Also might want to check over the [MySQL] section.