YII2框架中excel表格导出的方法详解

memory_limit = 128M

//导出清单

public function actionInventory(){
 ini_set("memory_limit", "2048M");
 set_time_limit(0);
 $id = Yii::$app->user->identity->getId();
 $user = Employee::find()->where(['id'=>$id])->one();
 $params = Yii::$app->request->get();
 
 //类似的，跳转到recharge这个model文件里的inventory方法去处理数据
 $data = Recharge::inventory($params);
 
 //设置导出的文件名
 $fileName = iconv('utf-8', 'gbk', '代理商统计清单'.date("Y-m-d"));
 
 //设置表头
 $headlist = array('代理商','文章ID','文章标题','媒体','统计时间范围','状态','创建时间','审核时间','发稿时间','退稿时间','财务状态','成本','销售额','是否是预收款媒体类型','订单类别');
 header('Content-Type: application/vnd.ms-excel');
 
 //指明导出的格式
 header('Content-Disposition: attachment;filename="'.$fileName.'.csv"');
 header('Cache-Control: max-age=0');
 
 //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
 foreach ($headlist as $key => $value) {
 //CSV的Excel支持GBK编码，一定要转换，否则乱码
 $headlist[$key] = iconv('utf-8', 'gbk', $value);
 }
 
 //将数据通过fputcsv写到文件句柄
 fputcsv($fp, $headlist);
 
 //每隔$limit行，刷新一下输出buffer，不要太大，也不要太小
 $limit = 100000;
 
 //逐行取出数据，不浪费内存
 foreach ($data as $k => $v) {
 //刷新一下输出buffer，防止由于数据过多造成问题
 if ($k % $limit == 0 && $k!=0) {
 ob_flush();
 flush();
 }
 $row = $data[$k];
 foreach ($row as $key => $value) {
 $row[$key] = iconv('utf-8', 'gbk', $value);
 }
 fputcsv($fp, $row);
 }
}

public static function inventory($params){
 //统计时间范围
 if(!empty($params['min']) && !empty($params['max'])){
 $ti = strtotime($params['max'])+3600*24;
 $max = date('Y-m-d',$ti);
 $time = $params['min'].'-'.$params['max'];
 $date_min = $params['min'];
 $date_max = $max;
 }else{
 $date_max = date('Y-m-d');
 $date_min = date('Y-m-d',strtotime("-31 day"));
 $time = $date_min.'-'.$date_max;
 }
 //查询数据
 if($params['state'] == 1){
 $where = '';
 $where .= ' AND (`issue_date` BETWEEN '.'\''.$date_min.'\''.' AND '.'\''.$date_max.'\')';
 $map = 'select
  company.name,
  article.id,
  article.title,
  media.media_name,
  article.status,
  article.created,
  article.audit_at,
  article.issue_date,
  article.back_date,
  article.finance_status,
  article.cost,
  article.company_cost,
  media.is_advance
  from article
  LEFT JOIN custom_package ON custom_package.id = article.custom_package_id
  LEFT JOIN `order` ON custom_package.order_id = `order`.`id`
  LEFT JOIN company ON company.id = article.company_id
  LEFT JOIN media ON media.id = article.media_id
  where article.status=2 and `order`.package=0'.$where;
 //查找的第一部分数据，使用asArray方法可以使我们查找的结果直接形成数组的形式，没有其他多余的数据占空间（注意：我这里查找分三部分是因为我要查三种不同的数据）
 $list1 = Article::findBySql($map)->asArray()->all();
 $where2 = '';
 $where2 .= ' AND (`issue_date` BETWEEN '.'\''.$date_min.'\''.' AND '.'\''.$date_max.'\')';
 $where2 .= ' AND (`back_date` > \''.$date_max.'\')';
 $map2 = 'select
  company.name,
  article.id,
  article.title,
  media.media_name,
  article.status,
  article.created,
  article.audit_at,
  article.issue_date,
  article.back_date,
  article.finance_status,
  article.cost,
  article.company_cost,
  media.is_advance
  from article
  LEFT JOIN custom_package ON custom_package.id = article.custom_package_id
  LEFT JOIN `order` ON custom_package.order_id = `order`.`id`
  LEFT JOIN company ON company.id = article.company_id
  LEFT JOIN media ON media.id = article.media_id
  where article.status=3 and `order`.package=0 '.$where2;
 //查找的第二部分数据
 $list2 = Article::findBySql($map2)->asArray()->all();
 $where3 = '';
 $where3 .= ' AND (`issue_date` BETWEEN '.'\''.$date_min.'\''.' AND '.'\''.$date_max.'\')';
 $map3 = 'select
  company.name,
  article.id,
  article.title,
  media.media_name,
  article.status,
  article.created,
  article.audit_at,
  article.issue_date,
  article.back_date,
  article.finance_status,
  article.cost,
  article.company_cost,
  media.is_advance
  from article
  LEFT JOIN custom_package ON custom_package.id = article.custom_package_id
  LEFT JOIN `order` ON custom_package.order_id = `order`.`id`
  LEFT JOIN company ON company.id = article.company_id
  LEFT JOIN media ON media.id = article.media_id
  where article.status=5 '.$where3;
 //查找的第三部分数据
 $list3 = Article::findBySql($map3)->asArray()->all();
 $list4 = ArrayHelper::merge($list1,$list2);
 $list = ArrayHelper::merge($list4,$list3);
 }
 //把结果按照显示顺序存到返回的数组中
 if(!empty($list)){
 foreach ($list as $key => $value){
 //代理公司
 $inventory[$key]['company_name'] = $value['name'];
 //文章ID
 $inventory[$key]['id'] = $value['id'];
 //文章标题
 $inventory[$key]['title'] = $value['title'];
 //媒体
 $inventory[$key]['media'] = $value['media_name'];
 //统计时间
 $inventory[$key]['time'] = $time;
 //状态
 switch($value['status']){
 case 2:
  $inventory[$key]['status'] = '已发布';
  break;
 case 3:
  $inventory[$key]['status'] = '已退稿';
  break;
 case 5:
  $inventory[$key]['status'] = '异常稿件';
  break;
 }
 //创建时间
 $inventory[$key]['created'] = $value['created'];
 //审核时间
 $inventory[$key]['audit'] = $value['audit_at'];
 //发稿时间
 $inventory[$key]['issue_date'] = $value['issue_date'];
 //退稿时间
 $inventory[$key]['back_date'] = $value['back_date'];
 //财务状态
 switch($value['finance_status']){
 case 0:
  $inventory[$key]['finance_status'] = '未到结算期';
  break;
 case 1:
  $inventory[$key]['finance_status'] = '可结算';
  break;
 case 2:
  $inventory[$key]['finance_status'] = '资源审批中';
  break;
 case 3:
  $inventory[$key]['finance_status'] = '财务审批中';
  break;
 case 4:
  $inventory[$key]['finance_status'] = '已结款';
  break;
 case 5:
  $inventory[$key]['finance_status'] = '未通过';
  break;
 case 6:
  $inventory[$key]['finance_status'] = '财务已审批';
  break;
 }
 //成本
 $inventory[$key]['cost'] = $value['cost'];
 //销售额
 $inventory[$key]['company_cost'] = $value['company_cost'];
 //是否是预售
 switch($value['is_advance']){
 case 0:
  $inventory[$key]['is_advance'] = '否';
  break;
 case 1:
  $inventory[$key]['is_advance'] = '是';
  break;
 case 2:
  $inventory[$key]['is_advance'] = '合同';
  break;
 }
 //订单类别
 switch($params['state']){
 case 1:
  $inventory[$key]['order_type'] = '时间区间无退稿完成订单';
  break;
 case 2:
  $inventory[$key]['order_type'] = '时间区间发布前退稿订单';
  break;
 case 3:
  $inventory[$key]['order_type'] = '时间区间发布后时间区间退稿订单';
  break;
 case 4:
  $inventory[$key]['order_type'] = '时间区间之前发布时间区间内退稿订单';
  break;
 case 5:
  $inventory[$key]['order_type'] = '异常订单';
  break;
 }
 }
 }else{
 $inventory[0]['company_name'] = '无数据导出';
 }
 return $inventory;
}