csv-export.php

<?php

ob_start();
$out = fopen('php://output', 'w');
$headerRow = array();
foreach( array_keys($result[0]) as $fieldname ) {
	$headerRow []= isset($fields[$fieldname]) ? $fields[$fieldname]['title'] : $fieldname;
}
fputcsv($out, $headerRow );
foreach( $result as $row ) {
	fputcsv($out,  $row);
}
$contents = ob_get_contents();

ob_end_clean();

if (strstr($_SERVER['HTTP_USER_AGENT'], "MSIE")) {
	header('Content-Type: text/csv');
	header('Content-Disposition: inline; filename="'.$filename.'"');
	header("Content-Transfer-Encoding: binary");
	header('Expires: 0');
	header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
	header('Pragma: public');
	header("Content-Length: ".strlen($contents));
} else {
	header('Content-Type: text/csv');
	header('Content-Disposition: attachment; filename="'.$filename.'"');
	header("Content-Transfer-Encoding: binary");
	header('Expires: 0');
	header('Pragma: no-cache');
	header("Content-Length: ".strlen($contents));
}

fclose($out);
echo $contents;

?>