Unpack this package into a directory at the "htdocs" level on any web server stack with PHP. The references to the dependences are all relative.
The three functional PHP examples are articles_headlines.php, community_feed.php and census_population.php. These are live examples, not the libraires. To see how the libraries are used, just peek at the source.
Add your key to these source files to make calls. Both articles_headlines and community_feed will use your USA TODAY Articles API key. census_population will require your USA TODAY Census API key.
Navigate to articles_headlines.php, community_feed.php and census_population.php from your browser and give it a whirl.
Requirements: Any standard LAMP stack. PHP requirements are the regular suspects. Please report any dependency issues along with a stack bio (OS, server, etc.).