$data = DB::list(
                                                    $columns='*',
                                                    $tableName='orders',
                                                    $where='',
                                                    $whereArray=array(),
                                                    $order='order by id desc',
                                                    $limit='');
                                                ob_start();

// Set PHP headers for CSV output.
header('Content-Type: text/csv; charset=utf-8');
header('Content-Disposition: attachment; filename=csv_export.csv');

// Create the headers.
$header_args = array( 'id', 'customerid', 'ithemid', 'discription', 'paytrack', 'status', 'createdate', 'lastchange', 'pic', 'aid', 'ghpic', 'check1', 'check2', 'check3', 'check4', 'check5', 'check6', 'check7', 'check8', 'check9', 'check10', 'check11', 'check12', 'check13', 'check14', 'check15', 'check16', 'check17', 'check18', 'check19', 'check20', 'check21', 'check22', 'check23', 'check24', 'check25', 'check26', 'check27', 'check28', 'check29', 'check30', 'check31', 'check32', 'check33', 'check34', 'check35', 'check36', 'month', 'fa', 'bankenamecheck1', 'checkcode1', 'saiadicheck1', 'hesabcheck1', 'bankenamecheck2', 'checkcode2', 'saiadicheck2', 'hesabcheck2', 'bankenamecheck3', 'checkcode3', 'saiadicheck3', 'hesabcheck3', 'bankenamecheck4', 'checkcode4', 'saiadicheck4', 'hesabcheck4', 'bankenamecheck5', 'checkcode5', 'saiadicheck5', 'hesabcheck5', 'bankenamecheck6', 'checkcode6', 'saiadicheck6', 'hesabcheck6', 'bankenamecheck7', 'checkcode7', 'saiadicheck7', 'hesabcheck7', 'bankenamecheck8', 'checkcode8', 'saiadicheck8', 'hesabcheck8', 'bankenamecheck9', 'checkcode9', 'saiadicheck9', 'hesabcheck9', 'bankenamecheck10', 'checkcode10', 'saiadicheck10', 'hesabcheck10', 'bankenamecheck11', 'checkcode11', 'saiadicheck11', 'hesabcheck11', 'bankenamecheck12', 'checkcode12', 'saiadicheck12', 'hesabcheck12', 'bankenamecheck13', 'checkcode13', 'saiadicheck13', 'hesabcheck13', 'bankenamecheck14', 'checkcode14', 'saiadicheck14', 'hesabcheck14', 'bankenamecheck15', 'checkcode15', 'saiadicheck15', 'hesabcheck15', 'bankenamecheck16', 'checkcode16', 'saiadicheck16', 'hesabcheck16', 'bankenamecheck17', 'checkcode17', 'saiadicheck17', 'hesabcheck17', 'bankenamecheck18', 'checkcode18', 'saiadicheck18', 'hesabcheck18', 'bankenamecheck19', 'checkcode19', 'saiadicheck19', 'hesabcheck19', 'bankenamecheck20', 'checkcode20', 'saiadicheck20', 'hesabcheck20', 'bankenamecheck21', 'checkcode21', 'saiadicheck21', 'hesabcheck21', 'bankenamecheck22', 'checkcode22', 'saiadicheck22', 'hesabcheck22', 'bankenamecheck23', 'checkcode23', 'saiadicheck23', 'hesabcheck23', 'bankenamecheck24', 'checkcode24', 'saiadicheck24', 'hesabcheck24', 'bankenamecheck25', 'checkcode25', 'saiadicheck25', 'hesabcheck25', 'bankenamecheck26', 'checkcode26', 'saiadicheck26', 'hesabcheck26', 'bankenamecheck27', 'checkcode27', 'saiadicheck27', 'hesabcheck27', 'bankenamecheck28', 'checkcode28', 'saiadicheck28', 'hesabcheck28', 'bankenamecheck29', 'checkcode29', 'saiadicheck29', 'hesabcheck29', 'bankenamecheck30', 'checkcode30', 'saiadicheck30', 'hesabcheck30', 'bankenamecheck31', 'checkcode31', 'saiadicheck31', 'hesabcheck31', 'bankenamecheck32', 'checkcode32', 'saiadicheck32', 'hesabcheck32', 'bankenamecheck33', 'checkcode33', 'saiadicheck33', 'hesabcheck33', 'bankenamecheck34', 'checkcode34', 'saiadicheck34', 'hesabcheck34', 'bankenamecheck35', 'checkcode35', 'saiadicheck35', 'hesabcheck35', 'bankenamecheck36', 'checkcode36', 'saiadicheck36', 'hesabcheck36', 'factorpic', 'factorprice', 'zecheckcode', 'zesaiadicheck', 'zehesabcheck', 'zebankenamecheck', 'level' );

// Prepare the content to write it to CSV file.

// Clean up output buffer before writing anything to CSV file.
ob_end_clean();

// Create a file pointer with PHP.
$output = fopen( 'php://output', 'w' );

// Write headers to CSV file.
fputcsv( $output, $header_args );

// Loop through the prepared data to output it to CSV file.
foreach( $data as $data_item ){
    fputcsv( $output, $data_item );
}

// Close the file pointer with PHP with the updated output.
fclose( $output );
exit;