function _drupal_bootstrap_database

Initializes the database system and registers autoload functions.

File

includes/bootstrap.inc, line 2782

Code

function _drupal_bootstrap_database() {
    // Redirect the user to the installation script if Drupal has not been
    // installed yet (i.e., if no $databases array has been defined in the
    // settings.php file) and we are not already installing.
    if (empty($GLOBALS['databases']) && !drupal_installation_attempted()) {
        include_once DRUPAL_ROOT . '/includes/install.inc';
        install_goto('install.php');
    }
    // The user agent header is used to pass a database prefix in the request when
    // running tests. However, for security reasons, it is imperative that we
    // validate we ourselves made the request.
    if ($test_prefix = drupal_valid_test_ua()) {
        // Set the test run id for use in other parts of Drupal.
        $test_info =& $GLOBALS['drupal_test_info'];
        $test_info['test_run_id'] = $test_prefix;
        $test_info['in_child_site'] = TRUE;
        foreach ($GLOBALS['databases']['default'] as &$value) {
            // Extract the current default database prefix.
            if (!isset($value['prefix'])) {
                $current_prefix = '';
            }
            elseif (is_array($value['prefix'])) {
                $current_prefix = $value['prefix']['default'];
            }
            else {
                $current_prefix = $value['prefix'];
            }
            // Remove the current database prefix and replace it by our own.
            $value['prefix'] = array(
                'default' => $current_prefix . $test_prefix,
            );
        }
    }
    // Initialize the database system. Note that the connection
    // won't be initialized until it is actually requested.
    require_once DRUPAL_ROOT . '/includes/database/database.inc';
    // Register autoload functions so that we can access classes and interfaces.
    // The database autoload routine comes first so that we can load the database
    // system without hitting the database. That is especially important during
    // the install or upgrade process.
    spl_autoload_register('drupal_autoload_class');
    spl_autoload_register('drupal_autoload_interface');
    if (version_compare(PHP_VERSION, '5.4') >= 0) {
        spl_autoload_register('drupal_autoload_trait');
    }
}