Php/curl/wget or bash script automatic website interaction

Have a particular website (runs locally) and we need to perform some automatic functions against the website.
There are two function and they can be written in any combination of wget, curl, bash and php.
Everything will run locally and will not be exposed to web.

keep script as simple as possible and comment code for future use.

Need two functions built.

Function 1 (send)
script that accepts 2 command line arguments
logs onto to website
adds form data to two form fields.
submit form (if you can work out what JS scripts are running and run them directly even better)
get result of the command
echo the returned result

Function 2 (receieve)
script that has no command line argument.
logs into website
retrieve latest data
echo the returned latest data