Question

我想以数字显示当前所有记录的查询count

控制器：

 public function fetchCounts(){
    $Result = $this->receivedModel->vehicleFreight($this->session->userdata('user_branch'));
    }

型号：

public function vehicleFreight($branch_id)  
        {  
             $this->db->select('*');
             $this->db->from('truck_freight');
             $this->db->where('truck_freight_status','truck_freight');
             $this->db->where('fr_memo_to',$branch_id);

            $query = $this->db->get();
            return $query->result();
        }

如何在查询中使用count()。在我的数据库中，我有3条记录。

Answer 1

尝试一下模型

public function vehicleFreight($branch_id)  
        {  
             $this->db->select('count(*)');
             $this->db->from('truck_freight');
             $this->db->where('truck_freight_status','truck_freight');
             $this->db->where('fr_memo_to',$branch_id);

            $query = $this->db->get();
            return $query->result();
        }

Answer 2

许多计数方法

1 . echo count($query->result()); 


2 . echo $query->num_rows();

3 . You can use `count(*)` in `select` statement

Answer 3

要获取提取的记录数，

$data = $query->result();
echo count($data); // use this as per your requirements
return $data;

Answer 4

您可以使用以下函数返回结果数。

return $this->db->count_all_results();

应使用它代替get（）

$query = $this->db->get();

请检查documentation

Answer 5

如下更改代码：

$disk = Get-WmiObject Win32_LogicalDisk -ComputerName STR3598C -Filter "DeviceID='C:'" | Select-Object Size,FreeSpace 

$disk.Size
$disk.FreeSpace

目前，我得到查询的结果，但我想获取记录数

5 个答案: