php 导入excel文档程序

php 导入excel文档程序
$a = "用户名,真实姓名,联系方式,联系QQ,联系地址,邮箱地址 rn";
header("Content-type:application/vnd.ms-excel");
header("Content-Disposition:filename=".$Filename);
$Sql = "Select * from  gx_member";
$Result = mysql_query($Sql) or die(mysql_error());
  while($rs = mysql_fetch_array($Result) ){
    if(get_days($rs['m_time'])    $a.=$rs['m_name'].','. $rs['m_realname'].",". $rs['m_tel'].",". $rs['m_qq'].",";
   $a.="".$rs['m_address'].",". $rs['m_mail']." rn ";
   }
  } 
  echo $a;