public function xlsx($lists)
{
$date = date("Y-m-d_H:i:s", time());
$fileName = "XXXX_" . $date . ".xlsx";
$xlsx_header = array('序号', 'UID');
ob_get_clean();
ob_start();
echo implode("\t", $xlsx_header),"\n";
$num = 0;
foreach ($lists as $key => $value) {
$data = array();
$data[] = $num;
$data[] = $value['uid'];
$data[] = $value['useruntwo'];
echo implode("\t", $data),"\n";
}
header('Content-Disposition: attachment; filename='.$fileName);
header('Accept-Ranges:bytes');
header('Content-Length:' . ob_get_length());
header('Content-Type:application/vnd.ms-excel');
ob_end_flush();
}