PMA\libraries\plugins\export\ExportJson::exportHeader PHP Метод

    public function exportHeader()
    {
        global $crlf;
        $meta = array('type' => 'header', 'version' => PMA_VERSION, 'comment' => 'Export to JSON plugin for PHPMyAdmin');
        return PMA_exportOutputHandler('[' . $crlf . $this->encode($meta) . ',' . $crlf);
    }