8. The webpage contains a form that asks
the user to enter their first name, last
name, and age. The form has a submit
button that the user can click to submit
their information. When the user submits
the form, the information is sent to a
PHP script that processes the data and
displays a message with the user's
name, age, and birth year.
9. The <form> tag specifies the method
used to submit the form data, which is
set to "post" using the "method"
attribute. This means that the data
entered in the form fields will be sent in
the HTTP request body, rather than
appended to the URL.
10. The "action" attribute specifies the URL
of the PHP script that will process the
form data when the user submits the
form.
11. This HTML code creates a form with
three input fields: "First Name", "Last
Name", and "Your Age". Each input field
is created with the <input> tag and has a
corresponding "name" attribute that will
be used to identify it in the PHP script.
The "size" attribute of the input fields
specifies their width in characters.
12. The submit button is created using an
<input> tag with the "type" attribute set
to "submit" and the "value" attribute set
to "Submit Information".
14. This PHP code retrieves the values of
the form fields using the $_POST
superglobal array. The $_POST array
contains key-value pairs where the keys
are the "name" attributes of the form
fields and the values are the data
entered into those fields.
15. The PHP code then assigns these
values to variables for easier
manipulation. The $firstname,
$lastname, and $age variables
correspond to the form fields with the
same names.
16. The first name and last name are then
concatenated into a single string variable
called $fullname. This is achieved by
enclosing the variable names in double
quotes and separating them with a
space. The resulting string allows the
values of the variables to be inserted
into the text.
17. Next, the code sets the $factor variable
to 5 and adds it to the user's age to get
the $ageplus variable. This is just an
example calculation to demonstrate the
use of variables.
18. The code then uses the date() function
to get the current year and assigns it to
the $current_year variable. It subtracts
the $ageplus value from the
$current_year value to get the user's
birth year and assigns it to the
$birth_year variable.
19. Finally, the PHP code generates a
response using the print statement. It
generates an HTML paragraph (<p>)
with the user's full name, age, the
calculated age plus 5, and their birth
year.
