What is wrong with this PHP code if the goal is to keep $count value between requests?

medium📝 Debug Q7 of 15

PHP - Request Lifecycle

<?php
session_start();
$count++;
echo $count;
?>

AEcho statement should be outside PHP tags

Bsession_start() is called too late

CIncrement operator ++ is invalid here

D$count is not initialized from session data

Step-by-Step Solution

Solution:

Step 1: Check session variable usage
$count is incremented but never initialized from $_SESSION, so it starts undefined.
Step 2: Explain need to load and save session data
To persist $count, it must be read from and saved back to $_SESSION array.
Final Answer:
$count is not initialized from session data -> Option D
Quick Check:
Initialize from $_SESSION to persist variable [OK]

Quick Trick: Load and save session variables explicitly [OK]

Common Mistakes:

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