//输出电子表格
function export($file_name,$title = array(), $data) {
$excel_str = str_replace("\n", "\t", implode("," , $title)) . "\n";
$excel_str .= $data;
$file_name = mb_convert_encoding ( $file_name, "GB2312", "UTF-8" );
header ( "Content-Type: application/vnd.ms-execl" );
header ( "Content-Disposition: p_w_upload; filename=" . $file_name . ".csv" );
header ( "Pragma: no-cache" );
header ( "Expires: 0" );
$str = mb_convert_encoding ( $excel_str, "GBK", "UTF-8" );
echo $str;
die();
}