生成excel xls

$filename = ecs_iconv(EC_CHARSET, 'GB2312', $_LANG['guest_statistics']);

header("Content-type: application/vnd.ms-excel; charset=utf-8");
header("Content-Disposition: attachment; filename=$filename.xls");

/* 生成会员购买率 */
$data  = $_LANG['percent_buy_member'] . "\t\n";
$data .= $_LANG['member_count'] . "\t" . $_LANG['order_member_count'] . "\t" .
        $_LANG['member_order_count'] . "\t" . $_LANG['percent_buy_member'] . "\n";

$data .= $user_num . "\t" . $have_order_usernum . "\t" .
        $user_all_order['order_num'] . "\t" . sprintf("%0.2f", ($user_num > 0 ? $have_order_usernum / $user_num : 0) * 100) . "\n\n";

/* 每会员平均订单数及购物额 */
$data .= $_LANG['order_turnover_peruser'] . "\t\n";

$data .= $_LANG['member_sum'] . "\t" . $_LANG['average_member_order'] . "\t" .
        $_LANG['member_order_sum'] . "\n";

$ave_user_ordernum = $user_num > 0 ? sprintf("%0.2f", $user_all_order['order_num'] / $user_num) : 0;
$ave_user_turnover = $user_num > 0 ? price_format($user_all_order['turnover'] / $user_num) : 0;

$data .= price_format($user_all_order['turnover']) . "\t" . $ave_user_ordernum . "\t" . $ave_user_turnover . "\n\n";

/* 每会员平均订单数及购物额 */
$data .= $_LANG['order_turnover_percus'] . "\t\n";
$data .= $_LANG['guest_member_orderamount'] . "\t" . $_LANG['guest_member_ordercount'] . "\t" .
        $_LANG['guest_order_sum'] . "\n";

$order_num = $guest_all_order['order_num'] > 0 ? price_format($guest_all_order['turnover'] / $guest_all_order['order_num']) : 0;
$data .= price_format($guest_all_order['turnover']) . "\t" . $guest_all_order['order_num'] . "\t" .
        $order_num;

echo ecs_iconv(EC_CHARSET, 'GB2312', $data) . "\t";
exit;