Question

1. When is it preferable to use the “post” method and when is it preferable to use the “get” method?

2. What is an “all-in-one” form and when should it be used?

3. When would you use the $_SERVER['SCRIPT_NAME'] autoglobal?

4. What are several functions that are useful in validating form data?

Answer 1

1)POST carries request parameter in the message body which makes it more secure way of transferring data from client to server in http protocol,when you want to make a request to server with some parameter from client has to be passed to server POST is used where as  GET carries request parameter appended in URL string , GET is basically used to fetch data from server i.e client request for some data and server response back with some data

2)"all-in-one" form is used when their are multiple user to do registration in a form  and for all that the single user details are saved in one form , it is usefull when their are multiple user registration record has to saved.

3)$_SERVER['SCRIPT_NAME'] basically returns the path of the current script . It is declare global so it can be accessed regardless of the scope and you can access from any class function or file .

4)Function that are useful in validating form data -

checkdate() - it is used to check date is valid or not

ctype_alnum() - check if value contains numbers and letter

ctype_alpha() - check for value contains Letters only

ctype_digit() - check for value contains number