How can you safely remove a specific session variable named cart without destroying the entire session?

hard📝 Application Q9 of 15

PHP - Sessions and Cookies

How can you safely remove a specific session variable named cart without destroying the entire session?

A$_SESSION = array();

Bsession_destroy();

Cunset($_SESSION['cart']);

Ddelete $_SESSION['cart'];

Step-by-Step Solution

Solution:

Step 1: Identify method to remove one session variable
Using unset() removes a single key from the $_SESSION array.
Step 2: Compare with other options
session_destroy() ends the whole session, $_SESSION = array() clears all variables, and delete is invalid syntax.
Final Answer:
unset($_SESSION['cart']); -> Option C
Quick Check:
Remove one session key = unset() [OK]

Quick Trick: Use unset() to delete one session variable safely [OK]

Common Mistakes:

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