In this example, we first attach to the ScraperWiki database using the "scraperwiki::attach" command and specify the name of the database we want to connect to. Then, we use the "scraperwiki::select" command to retrieve all rows from a table in the database. Finally, we process the data using a "foreach" loop to iterate over each row and do something with it. The package library for the "php scraperwiki attach" command is the ScraperWiki PHP SDK, which provides a set of tools and functions for interacting with the ScraperWiki platform from a PHP environment.