What are the potential pitfalls of using incorrect variable names in a PHP session?

Using incorrect variable names in a PHP session can lead to errors in retrieving or setting session data, as the incorrect variable name may not exist or may point to a different value. To avoid this issue, it is important to use consistent and accurate variable names throughout your session handling code. 

// Correct variable name usage in PHP session
session_start();

// Set session variable
$_SESSION['username'] = 'john_doe';

// Retrieve session variable
$username = $_SESSION['username'];
echo $username;

Keywords

variable names PHP session syntax error undefined variable debugging

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