How can I track which user is logged in to associate them with new database entries in PHP?

To track which user is logged in and associate them with new database entries in PHP, you can use sessions to store the logged-in user's information. When a user logs in, you can store their user ID in a session variable. Then, when inserting new database entries, you can retrieve the user ID from the session and associate it with the new entry. 

// Start the session
session_start();

// Check if user is logged in and retrieve user ID from session
if(isset($_SESSION['user_id'])) {
    $user_id = $_SESSION['user_id'];
    
    // Insert new entry into the database with the user ID
    // $db_connection should be your database connection object
    $query = "INSERT INTO entries (user_id, entry_content) VALUES ('$user_id', 'New entry content')";
    $result = $db_connection->query($query);
    
    if($result) {
        echo "New entry added successfully!";
    } else {
        echo "Error adding new entry";
    }
} else {
    echo "User is not logged in";
}

Keywords

PHP user authentication session management database entries tracking user.

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