Identify the error in this PHP code that tries to read a cookie named session:

medium📝 Debug Q14 of 15

PHP - Sessions and Cookies

Identify the error in this PHP code that tries to read a cookie named session:

<?php
echo $_COOKIE['session'];
?>

ACookie name should be uppercase

BWrong function used to read cookie

CMissing check if cookie exists before reading

DCookies cannot be read in PHP

Step-by-Step Solution

Solution:

Step 1: Understand cookie reading best practice
Directly accessing $_COOKIE['session'] without checking if it exists can cause an undefined index notice if the cookie is not set.
Step 2: Identify the missing check
The code should use isset($_COOKIE['session']) before echoing to avoid errors.
Final Answer:
Missing check if cookie exists before reading -> Option C
Quick Check:
Always check isset() before reading cookie [OK]

Quick Trick: Always check isset() before using $_COOKIE values [OK]

Common Mistakes:

Master "Sessions and Cookies" in PHP

9 interactive learning modes - each teaches the same concept differently

Want More Practice?

15+ quiz questions · All difficulty levels · Free

More PHP Quizzes