Perl/CGI Scripting Exercise 4
Cookies
1. To set a cookie, you must set the cookie before the
mime content is printed by your cgi sript.
For example, if I want to set a cookie and print some information to the
screen, the following syntax must be followed:
Set the cookie
&mime;
Text to the screen.
2.
To send a cookie type
the following in any of your files.
·
Note: name is the name of the cookie and value is the value that you want the cookie to have. The
value can be a constant or a variable.
3.
There are other
options to sending a cookie. You can set the cookies expiration date by
entering the following.
·
Note that 00:00:00 is
in 24-hour time format. GMT is Greenwich Mean Time.
4. You can set other options such as limiting the
cookie to a certain domain or even limiting a cookie to a certain path in your
domain. For more information on how to do this, please visit
5. To send more than one cookie, just repeat the
process over as many times as needed.
6. Now we need to know how to read a cookie that we
have previously stored on the users computer. Try the following script:
·
You now have a hash
called crumbs that contains the cookie names as keys and their
values. You can use that information however you please.
On Your Own Exercise 4
Create a HTML input file that
gets a name from the user. The source
code is provided below:
Source code for
exercise_4.html
<html>
<head>
<title>CGI/Perl
Exercise 4</title>
</head>
<body>
<form
action="/cgi-bin/exercise_4_1.cgi" method="GET">
First
Name: <input type="text"
name="name"><br>
<input
type="submit" Value="Go">
</form>
</body>
</html>
Create a .cgi file called
exercise_4_1.cgi. This file will
actually parse the data from the form.
Then, this file will set a cookie called first_name with the value that
the user enters on exercise_4.html.
Then, the script will provide a link to exercise_4_2.cgi.
Create a .cgi file called
exercise_4_2.cgi. This file will read
the value of the first_name cookie and print it out to the screen.
