All the files server a specific purpose i.e collection froma specific source. boradly : they can be classified as twitter files and non twitter files each for the named sources respectivley.

TwitterAPIExchange.php

Utility Class for using Twitter's REST API

user_timeline.php

Dependencies : TwitterAPIExchange.php This class recursively extract given user's timeline * upto 3200 tweets ) searches for a partciular keywords in those ( optional ) and then recursively crawls user who have retweeded tweets contaiing our search keywords.

simple_html_dom.php

Utility class to parse DOM objects from a input html format. http://simplehtmldom.sourceforge.net/