How can the issue of session variables not being available on a PHP server be resolved, especially when moving from a local environment to a live server?

Issue: The problem of session variables not being available on a PHP server can be resolved by ensuring that the session_start() function is called before any session variables are accessed or set. This function initializes a session or resumes the current one based on a session identifier passed via a GET or POST request, or passed via a cookie. Code snippet: 

<?php
session_start();

// Access or set session variables here
$_SESSION['username'] = 'JohnDoe';
?>

Keywords

session variables PHP server live server local environment migration

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