[Solved] Identify the error in this PHP code snippet:<?php $_SESSION['user'] = 'John'; session_start(); echo $_SESSION['user']; ?> | PHP

PHP - Sessions and Cookies

Identify the error in this PHP code snippet:

<?php
$_SESSION['user'] = 'John';
session_start();
echo $_SESSION['user'];
?>

Asession_start() must be called before accessing $_SESSION

BSession variable 'user' cannot be a string

Csession_start() should be called after echo

DNo error, code works fine

Step-by-Step Solution

Solution:

Step 1: Check session_start() placement
Session must be started before reading or writing $_SESSION variables.
Step 2: Identify error cause
Here, $_SESSION['user'] is set before session_start(), so session data is not properly initialized.
Final Answer:
session_start() must be called before accessing $_SESSION -> Option A
Quick Check:
Call session_start() first to use $_SESSION [OK]

Quick Trick: Always call session_start() before $_SESSION use [OK]

Common Mistakes:

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