I'm not sure what you mean by a meta search engine. If you're talking about a search engine in the traditional sense, you may want to read Sergey Brin and Lawrence Page's (founders of Google) 2003 paper 'The Anatomy of a Search Engine': http://infolab.stanford.edu/~backrub/google.html.
Thanks for your reply. but i want method of META Search Engine like:dogpile...... etc. Extract Title, Description and URL's from GOOGLE, BING, YAHOO USING PHP...
List of META Search Engines: Brainboost ChunkIt! Clusty DeeperWeb Dogpile Excite Harvester42 HotBot Info.com Ixquick Kayak LeapFish Mamma Metacrawler MetaLib Mobissimo Myriad Search SideStep Turbo10 WebCrawler
a) You need to create parsing scripts to fetch data from the main engines b) You need to create some clustering algorithms to process the data Too much work.