How sessions work in PHP - Interactive Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to start a session in PHP.

PHP

<?php
[1]();
?>

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

Asession_start

Bstart_session

Cbegin_session

Dinit_session

Attempts:

3 left

💡 Hint

Common Mistakes

Using a function name that does not exist like start_session()

Forgetting to call the function before outputting HTML

In PHP, session_start() is used to begin a session or resume the current one.

2fill in blank

medium

Complete the code to store a value in the session.

PHP

<?php
session_start();
$_SESSION['user'] = [1];
?>

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

Auser

BJohn

C"John"

D'user'

Attempts:

3 left

💡 Hint

Common Mistakes

Assigning a bare word without quotes which causes an error

Using single quotes around the key instead of the value

Session values must be assigned as strings or variables. Here, "John" is a string value stored in the session.

3fill in blank

hard

Fix the error in the code to correctly check if a session variable is set.

PHP

<?php
session_start();
if (isset([1]['user'])) {
    echo "User is logged in.";
}
?>

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

A$_session

B$SESSION

CSESSION

D$_SESSION

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase or missing the dollar sign in $_SESSION

Using $SESSION or $session which are undefined

The correct superglobal array for sessions is $_SESSION with uppercase SESSION and a leading dollar sign.

4fill in blank

hard

Fill both blanks to correctly unset a session variable and destroy the session.

PHP

<?php
session_start();
unset([1]['user']);
[2]();
?>

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

A$_SESSION

Bsession_destroy

Cdestroy_session

D$SESSION

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong variable names like $SESSION

Calling a non-existent function like destroy_session()

To remove a session variable, use unset($_SESSION['user']). To end the session, use session_destroy().

5fill in blank

hard

Fill all three blanks to create a session variable, check it, and print it.

PHP

<?php
[1]();
if (isset([2]['count'])) {
    echo [3]['count'];
} else {
    echo "No count set.";
}
?>

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

Asession_start

B$_SESSION

Dsession_destroy

Attempts:

3 left

💡 Hint

Common Mistakes

Using session_destroy() instead of session_start()

Using different variable names for the session array

Start the session with session_start(). The session array is $_SESSION. Use it to check and print the 'count' variable.