1,"pay_type"=>array("NEQ","offline"),"status"=>array("lt",3),); $stmt = M("Group_order")->field("order_id,order_name,num,price,total_money,contact_name,phone,zipcode,adress,wx_cheap,balance_pay,payment_money,tuan_type,pay_time,pay_type,third_id,is_mobile_pay,paid,status")->where($where)->order("order_id DESC")->limit(1000)->select(); // 打开PHP文件句柄，PHP://output 表示直接输出到浏览器 $fp = fopen('PHP://output','a');

// 输出Excel列名信息
$head = array("订单号","订单名称","购买数量","单价","总价","联系人姓名","联系人电话","邮编","详细地址","微信优惠金额","余额支付金额","真实支付金额","特卖类型（2为实物）","支付时间","支付类型","第三方支付id","是否是手机支付","是否支付","订单状态");
foreach ($head as $i => $v) {
// CSV的Excel支持GBK编码，一定要转换，否则乱码
$head[$i] = iconv('utf-8','gbk',$v);
}

// 将数据通过fputcsv写到文件句柄
fputcsv($fp,$head);

// 计数器
$cnt = 0;
// 每隔$limit行，刷新一下输出buffer，不要太大，也不要太小
$limit = 500;
// 逐行取出数据，不浪费内存
$count = count($stmt);
for($t=0;$t<$count;$t++) {

$cnt ++;
if ($limit == $cnt) { //刷新一下输出buffer，防止由于数据过多造成问题
ob_flush();
flush();
$cnt = 0;
}
$row = $stmt[$t];
foreach ($row as $i => $v) {
if($i=='pay_time'){
$v=date("Y-m-d,H:i:s",$v);
}
$row[$i] = iconv('utf-8',$v);
}
fputcsv($fp,$row);
}
fclose($fp);
}