Bird
0
0

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

medium📝 Debug Q6 of 15
PHP - Request Lifecycle
Identify the error in this PHP code snippet related to request processing:
<?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:
  1. Step 1: Check variable initialization

    $count is used without being set, causing an undefined variable notice.
  2. Step 2: Validate other statements

    session_start() is correctly placed before output, ++ is valid, echo works fine.
  3. Final Answer:

    Using $count without initialization causes undefined variable error -> Option D
  4. Quick Check:

    Uninitialized variables cause errors in PHP [OK]
Quick Trick: Always initialize variables before use [OK]
Common Mistakes:
  • Assuming PHP auto-initializes variables
  • Thinking session_start() must be after output
  • Believing ++ operator is invalid

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions
More PHP Quizzes