When you use the method "post" does it always overwrite $_POST? Is this one of the global variables, like $_SERVER?

Answer 1

$_POST is a global variable. Each time you submit a form with method="POST", the form data is stored in thew $_POST variable.

Answer 2

post is a predefined global variable. It is used to send request to php script. While requesting it doesnt include the form field data in the url. Although post and get both do the same but ... post does it in more secure way but get method is rather faster than post.

Answer 3

yes

Answer 4

Yes. its global variable