How can the issue of a session variable being lost be resolved in PHP?

Issue: The session variable being lost in PHP can be resolved by ensuring that session_start() is called at the beginning of every page where the session variable is being used. This function initializes a new session or resumes the existing session based on a session identifier passed via a GET or POST request, or a cookie. 

<?php
session_start();

// Set session variable
$_SESSION['variable_name'] = 'value';

// Retrieve session variable
echo $_SESSION['variable_name'];
?>

Keywords

session variable lost resolve PHP error

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