How can PHP sessions be effectively managed to ensure secure user authentication in a growing online community?

Issue: To ensure secure user authentication in a growing online community, PHP sessions need to be effectively managed to prevent unauthorized access and protect user data. 

// Start the session
session_start();

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

// Other authentication logic goes here

Keywords

PHP sessions secure authentication online community session management user security

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