David Filo is an American businessman and the co-founder of Yahoo!

Yahoo!

Yahoo! Inc. is an American multinational internet corporation headquartered in Sunnyvale, California, United States. The company is perhaps best known for its web portal, search engine , Yahoo! Directory, Yahoo! Mail, Yahoo! News, Yahoo! Groups, Yahoo! Answers, advertising, online mapping ,...

 with Jerry Yang.

Until the company decided to switch to PHP

PHP

PHP is a general-purpose server-side scripting language originally designed for web development to produce dynamic web pages. For this purpose, PHP code is embedded into the HTML source document and interpreted by a web server with a PHP processor module, which generates the web page document...

, his Filo Server Program, written in the C

C (programming language)

C is a general-purpose computer programming language developed between 1969 and 1973 by Dennis Ritchie at the Bell Telephone Laboratories for use with the Unix operating system....

 programming language, was the server-side scripting software used to dynamically serve variable web pages, called Filo Server Pages, on visits to the Yahoo! web site.
Filo was born in Wisconsin

Wisconsin

Wisconsin is a U.S. state located in the north-central United States and is part of the Midwest. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michigan to the northeast, and Lake Superior to the north. Wisconsin's capital is...

. At age 6, he moved to Moss Bluff, Louisiana

Moss Bluff, Louisiana

Moss Bluff is a census-designated place in Calcasieu Parish, Louisiana, United States. The population was 10,535 at the 2000 census. Located just north of the city of Lake Charles, it is considered a suburb of that city. Moss Bluff is a burgeoning community, and is one of the communities in...

, a suburb of Lake Charles, Louisiana

Lake Charles, Louisiana

Lake Charles is the fifth-largest incorporated city in the U.S. state of Louisiana, located on Lake Charles, Prien Lake, and the Calcasieu River. Located in Calcasieu Parish, a major cultural, industrial, and educational center in the southwest region of the state, and one of the most important in...

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