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how do i make a php website
PHP is a server side scripting language.
You can find info and tuts on www.php.net from site: PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML.
Probably you will need tutorial http://www.w3schools.com/php/default.asp
if you mean seriously learn it I recomend you books from sitepoint.