SENDING FORM DATA
Sending the form data happens once the for data has been validated on the client side and its ok to submit the form.
CLIENT/SERVER ARCHITECTURE
The client/server architecture is a web browser that sends and requests to and on a server using HTTP protocol and the server answers the request using the same protocol.
On the client side defining how to send the data
the <form> elemnt defines how the data is sent.
the tow most important attributes of the submit button
are action and method.
action attribute defines where the data gets sent
method attribute defines how the data is sent
The two common methods are GET and POST.
The GET method is used by the browser to ask the server to send back a given resource.
The POST method is the method the browser uses to talk to the server.
On the server side retrieving the data
Whichever HTTP method you choose, the server receives a string that will be parsed in order to get the data as a list of key/value pairs.
A special case sending files
urlencoded this means tha the data has benn encoded into url parameters.
Be paranoid never trust your user
All data that comes to the server must be checked.