What are the key considerations for implementing a secure user login system with PHP, especially in relation to session management and user access control?

One key consideration for implementing a secure user login system with PHP is to properly manage user sessions to prevent unauthorized access. This can be achieved by using secure session handling techniques and implementing user access control to restrict certain actions based on user roles and permissions. 

<?php
session_start();

// Check if user is logged in
if(!isset($_SESSION['user_id'])) {
    header("Location: login.php");
    exit();
}

// Implement user access control based on roles/permissions
if($_SESSION['role'] !== 'admin') {
    echo "You do not have permission to access this page.";
    exit();
}
?>

Keywords

PHP user login session management user access control security

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