php 导出mysql内容成excel

header("Accept-Ranges: bytes");
	header("Content-type: application/vnd.ms-excel");
	header("Content-Disposition: attachment; filename=".$filename);
	
	mysql_connect('localhost','root','') or die('mysql connected fail');
	mysql_select_db('test');
	
	$sql = "select * from tbl_user";
	$query = mysql_query($sql);
	
	echo "id\tusername\tpassword\tsalt\temail\tdateline";
	while($row = mysql_fetch_array($query)){
		echo "\n";
		echo $row['id']."\t".$row['username']."\t".$row[password]."\t".$row['salt']."\t".$row['email']."\t".$row['dateline'];
	}