Snoopy is a PHP class that simulates a web browser. It automates the task of retrieving web page content and posting forms. Snoopy is a free PHP search engine class.

Some features of Snoopy :
-easily fetch the contents of a web page
-easily fetch the text from a web page (strip html tags)
-easily fetch the the links from a web page
-supports proxy hosts
-supports basic user/pass authentication
-supports setting user_agent, referer, cookies and header content
-supports browser redirects, and controlled depth of redirects
-expands fetched links to fully qualified URLs (default)
-easily submit form data and retrieve the results
-supports following html frames (added v0.92)
-supports passing cookies on redirects (added v0.92)

Requirements:
Snoopy requires PHP with PCRE (Perl Compatible Regular Expressions), which should be PHP 3.0.9 and up. For read timeout support, it requires PHP 4 Beta 4 or later.