Post parameters work very similar to GET variables but they are not passed in the URL.
Forms have two methods; GET and POST. The default method of a form is GET, therefore it doesn't have to be specified. However, when using the post method specify the method as post; <form method = "post">.
NOTE: In submit buttons the webpage you want to call is specified as an attribute in the form using action. For example <form action = "myform5.php" method = "post"> </form>
As was the case with GET parameters, the POST parameters are also stored in an array called $_POST. The same operations that can be carried out with $_GET array can also be carried out with S_POST array. For example: