Destroying sessions in PHP - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to start a session in PHP.

PHP

<?php
session_[1]();
?>

Drag options to blanks, or click blank then click option'

Abegin

Bopen

Cinit

Dstart

Attempts:

3 left

💡 Hint

Common Mistakes

Using session_open() or session_init() which do not exist.

Forgetting to start the session before using session variables.

The session_start() function is used to start a new session or resume an existing one.

2fill in blank

medium

Complete the code to unset a specific session variable named 'user'.

PHP

<?php
unset($_SESSION[1]);
?>

Drag options to blanks, or click blank then click option'

A{'user'}

B('user')

C['user']

D<'user'>

Attempts:

3 left

💡 Hint

Common Mistakes

Using parentheses or curly braces instead of square brackets.

Not quoting the session variable name.

To remove a session variable, use unset($_SESSION['variable_name']) with square brackets and quotes.

3fill in blank

hard

Fix the error in the code to destroy the session properly.

PHP

<?php
session_start();
session_[1]();
?>

Drag options to blanks, or click blank then click option'

Astop

Bdestroy

Cend

Dclose

Attempts:

3 left

💡 Hint

Common Mistakes

Using session_stop() or session_end() which do not exist.

Calling session_destroy() without starting the session first.

The correct function to destroy a session is session_destroy().

4fill in blank

hard

Fill both blanks to unset all session variables and then destroy the session.

PHP

<?php
session_start();
[1] = array();
session_[2]();
?>

Drag options to blanks, or click blank then click option'

A$_SESSION

Bsession_destroy

Csession_destroy()

D$session

Attempts:

3 left

💡 Hint

Common Mistakes

Using $session instead of $_SESSION.

Putting parentheses in the blank for session_destroy causing syntax errors.

Setting $_SESSION to an empty array removes all session variables. Then session_destroy() ends the session.

5fill in blank

hard

Fill all three blanks to properly destroy a session and delete the session cookie.

PHP

<?php
session_start();
$_SESSION = array();
if (ini_get('session.use_cookies')) {
    $params = session_get_cookie_params();
    setcookie(session_name(), '', time() - [1], $params[2], $params[3], true, true);
}
session_destroy();
?>

Drag options to blanks, or click blank then click option'

A3600

B['path']

C['domain']

D0

Attempts:

3 left

💡 Hint

Common Mistakes

Using a positive number for expiration time which does not delete the cookie.

Forgetting to use the correct keys 'path' and 'domain' from $params.

To delete a cookie, set its expiration time to a past time like time() - 0. The cookie path and domain are taken from $params['path'] and $params['domain'].