Identify the error in this PHP code snippet related to request processing:

medium📝 Debug Q6 of 15

PHP - Request Lifecycle

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

AEcho cannot output variables

Bsession_start() must be called after output

CIncrement operator ++ is invalid in PHP

DUsing $count without initialization causes undefined variable error

Step-by-Step Solution

Solution:

Step 1: Check variable initialization
$count is used without being set, causing an undefined variable notice.
Step 2: Validate other statements
session_start() is correctly placed before output, ++ is valid, echo works fine.
Final Answer:
Using $count without initialization causes undefined variable error -> Option D
Quick Check:
Uninitialized variables cause errors in PHP [OK]

Quick Trick: Always initialize variables before use [OK]

Common Mistakes:

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