How can the distinction between $_SESSION and $_Session impact the functionality of session management in PHP scripts?

Using the correct case for superglobal variables like $_SESSION is crucial in PHP because PHP is case-sensitive. If you mistakenly use $_Session instead of $_SESSION, it will create a new session variable instead of accessing the existing session data. This can lead to unexpected behavior in your session management. 

<?php
// Incorrect usage of $_Session
$_Session['username'] = 'John';

// Correct usage of $_SESSION
$_SESSION['username'] = 'John';
?>

Keywords

$_SESSION $_Session session management PHP scripts functionality

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