return $this->db->table('OrderIDStates') ->where('OrderStateID >', '0') // items with State 0 (Closed) not listen ->join('orders', 'orders.State = OrderIDStates.OrderStateID', 'left') ->select('OrderStateID, OrderStateText') ->selectCount('State', 'amount') ...
开始读取sheet中的单元格数据 #读取excel中A1数据,即第一行第一列,返回“姓名”$sheet->getCell('A1')->getValue();#B1 返回“性别”$sheet->getCell('B1')->getValue();#获取当前总行数$rows=$sheet->getHighestRow();$users=[];#一般excel中第一行为标题,所以实际数据从第二行开始 循环读取for($i...
Number of rows in the query result Return type: int Generates a platform-specific query string that counts all records returned by an Query Builder query. countAll([$reset = true]) Parameters: $reset (bool)– Whether to reset values for SELECTs Returns: Number of rows in the quer...
方法二:在SQL语句中使用count(*) 1 2 3 $sql="select count(*) num from user where sex='male'"; $res=$this->db->query($sql)->row_array(); $num=$res['num']; 方法三:在取结果之前打印query返回值,通过获取query内部的属性名来获取num_rows,注意全是属性,不能使用数组格式访问: 1 2 3 $...
$this->db->affected_rows();//更新插入显示影响结果 //显示结果集 return $this->db->query('sql'); //显示插入id return $this->db->insert_id(); //显示my_table有多少行数据 return $this->db->count_all('my_table'); //显示系统使用的数据库 ...
count在数组或对象上,-〉num_rows()提供一个int。
'admin'; $config['total_rows'] = $this->event_model->record_count(); $config['per_page'] = 2; $config['uri_segment'] = 2; $this->pagination->initialize( $config ); $page = ( $this->uri->segment( 2 ) ) ? $this->uri->segment( 2 ) : 0; $data['paged_events'] = $...
'users/index/'; $config['total_rows'] = $this->db->count_all('users'); $config['per_page'] = 10; $config['uri_segment'] = 3; $config['attributes'] = array('class' => 'pagination-link'); $this->pagination->initialize($config); $data['users'] = $this->user_model->get_...
count在数组或对象上,-〉num_rows()提供一个int。
php#l1855)万一false您不能对其调用num\u rows()(错误消息是这样说的)请尝试以下操作: