PMA\libraries\plugins\export\ExportSql::exportDBCreate PHP Method

    public function exportDBCreate($db, $export_type, $db_alias = '')
    {
        global $crlf;
        if (empty($db_alias)) {
            $db_alias = $db;
        }
        if (isset($GLOBALS['sql_compatibility'])) {
            $compat = $GLOBALS['sql_compatibility'];
        } else {
            $compat = 'NONE';
        }
        if (isset($GLOBALS['sql_drop_database'])) {
            if (!PMA_exportOutputHandler('DROP DATABASE IF EXISTS ' . Util::backquoteCompat($db_alias, $compat, isset($GLOBALS['sql_backquotes'])) . ';' . $crlf)) {
                return false;
            }
        }
        if ($export_type == 'database' && !isset($GLOBALS['sql_create_database'])) {
            return true;
        }
        $create_query = 'CREATE DATABASE IF NOT EXISTS ' . Util::backquoteCompat($db_alias, $compat, isset($GLOBALS['sql_backquotes']));
        $collation = $GLOBALS['dbi']->getDbCollation($db);
        if (mb_strpos($collation, '_')) {
            $create_query .= ' DEFAULT CHARACTER SET ' . mb_substr($collation, 0, mb_strpos($collation, '_')) . ' COLLATE ' . $collation;
        } else {
            $create_query .= ' DEFAULT CHARACTER SET ' . $collation;
        }
        $create_query .= ';' . $crlf;
        if (!PMA_exportOutputHandler($create_query)) {
            return false;
        }
        return $this->_exportUseStatement($db_alias, $compat);
    }