Is it recommended to start with a clean version of PHP forum software and import the old database, or is there a better approach?

It is recommended to start with a clean version of PHP forum software and import the old database to ensure a smooth transition and avoid any potential conflicts or issues. This approach allows you to benefit from any updates or improvements in the new version while retaining your existing data.

// Example code for importing old database into clean PHP forum software

// Connect to the old database
$old_db = new mysqli('old_host', 'old_username', 'old_password', 'old_database');

// Connect to the new database
$new_db = new mysqli('new_host', 'new_username', 'new_password', 'new_database');

// Select data from old database
$old_data = $old_db->query('SELECT * FROM old_table');

// Insert data into new database
while ($row = $old_data->fetch_assoc()) {
    $new_db->query("INSERT INTO new_table (column1, column2) VALUES ('" . $row['column1'] . "', '" . $row['column2'] . "')");
}

// Close database connections
$old_db->close();
$new_db->close();