mysql导出xls文件方法

<?php
include('db/db.php');  //包含连库类
$db = new db();
$result = mysql_query('select * from market_sig into outfile "d:product3.xls";');
var_dump($result);
?>

mysql   -uroot   -p   -e   "select   *   from   test.table2 "   >   d:a.xsl