how do i install PHP with JSON and OAuth on Mac Snow Leopard?

i want to use the dropbox api via this library

开发者_高级运维

http://code.google.com/p/dropbox-php/

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Well for starters install MAMP (see google) is probably the easiest way for the server w. PHP, then run pecl install oauth in the Terminal and then you should be good to just download that library & use it.