[Solved] What is the issue with this PHP code snippet?echo $_SESSION['username']; session_start(); $_SESSION['username'] = 'Charlie'; | PHP

PHP - Sessions and Cookies

What is the issue with this PHP code snippet?

echo $_SESSION['username'];
session_start();
$_SESSION['username'] = 'Charlie';

ASession variable is assigned after echoing

BSession is accessed before calling session_start()

CSession variable name is invalid

DNo issue; code works correctly

Step-by-Step Solution

Solution:

Step 1: Identify session start
session_start() must be called before accessing $_SESSION.
Step 2: Analyze code order
The code echoes $_SESSION['username'] before starting the session, which causes an error or empty output.
Final Answer:
Session is accessed before calling session_start() -> Option B
Quick Check:
Always call session_start() first [OK]

Quick Trick: Call session_start() before using $_SESSION [OK]

Common Mistakes:

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What is the issue with this PHP code snippet?