PMA\libraries\StorageEngine::isValid PHP Méthode

    public static function isValid($engine)
    {
        if ($engine == "PBMS") {
            return true;
        }
        $storage_engines = StorageEngine::getStorageEngines();
        return isset($storage_engines[$engine]);
    }

/**
 * setup HTML for server Engines information
 *
 * @return string
 */
function PMA_getHtmlForServerEngines()
{
    /**
     * Did the user request information about a certain storage engine?
     */
    $html = '';
    if (empty($_REQUEST['engine']) || !StorageEngine::isValid($_REQUEST['engine'])) {
        $html .= PMA_getHtmlForAllServerEngines();
    } else {
        $html .= PMA_getHtmlForSpecifiedServerEngines();
    }
    return $html;
}