Nejsem si jistý .xls, ale pro výstup výsledku MySQL jako tabulky CSV to funkce fputcsv dělá bez velkého povyku:
// Clear any previous output
ob_end_clean();
// I assume you already have your $result
$num_fields = mysql_num_fields($result);
// Fetch MySQL result headers
$headers = array();
$headers[] = "[Row]";
for ($i = 0; $i < $num_fields; $i++) {
$headers[] = strtoupper(mysql_field_name($result , $i));
}
// Filename with current date
$current_date = date("y/m/d");
$filename = "MyFileName" . $current_date . ".csv";
// Open php output stream and write headers
$fp = fopen('php://output', 'w');
if ($fp && $result) {
header('Content-Type: text/csv');
header('Content-Disposition: attachment; filename='.$filename);
header('Pragma: no-cache');
header('Expires: 0');
echo "Title of Your CSV File\n\n";
// Write mysql headers to csv
fputcsv($fp, $headers);
$row_tally = 0;
// Write mysql rows to csv
while ($row = mysql_fetch_array($result, MYSQL_NUM)) {
$row_tally = $row_tally + 1;
echo $row_tally.",";
fputcsv($fp, array_values($row));
}
die;
}