Question

我有一个考勤表，如果不存在，我想在其中插入数据，如果存在则要更新，Loop中的查询工作正常，但花费太多时间。因此，为了减少时间，我将所有查询连接为以分号分隔的字符串。在phpMyAdmin中进行级联工作后获得结果，但在Codeigniter中则没有，任何猜测为什么？提前致谢。

function set_attendance()
    {
        $today = date('Y-m-d');
        $data = $this->input->post('member');
        $str='';
        foreach ($data as  $value) 
        {
            $query = $this->db->select('*')
                            ->from('attendance')
                            ->where('user_id',$value['user_id'])
                            ->where('date',$today)
                            ->get();

            if($query->num_rows()>0)
            {
                $obj = array(
                       'attendance'    => $value['status'],
                       'leavetype' => $value['leavetype'],
                );

                $where = "user_id =  '{$value['user_id']}' AND date = '{$today}'";

                $str .= $this->db->update_string('attendance', $obj, $where);
                $str.=';';
            }
            else
            {
                 $obj = array(
                        's-no'  => null,
                        'user_id' => $value['user_id'],
                        'date' => $today,
                        'regby'=>'t',
                        'leavetype' => $value['leavetype'],
                       'attendance'    => $value['status'],
                );
                $str .= $this->db->insert_string('attendance', $obj);
                 $str.=';';

            }

        }

        $this->db->query($str);
        $output = array('result'=>true);
        return $output ;
    }

Answer 1

好，我得到了答案只需运行php native multi_query（）函数

function set_attendance()
    {
        $today = date('Y-m-d');
        $data = $this->input->post('member');
        $str='';
        foreach ($data as  $value) 
        {
            $query = $this->db->select('*')
                            ->from('attendance')
                            ->where('user_id',$value['user_id'])
                            ->where('date',$today)
                            ->get();

            if($query->num_rows()>0)
            {
                $obj = array(
                       'attendance'    => $value['status'],
                       'leavetype' => $value['leavetype'],
                );

                $where = "user_id =  '{$value['user_id']}' AND date = '{$today}'";

                $str .= $this->db->update_string('attendance', $obj, $where);
                $str.=';';
            }
            else
            {
                 $obj = array(
                        's-no'  => null,
                        'user_id' => $value['user_id'],
                        'date' => $today,
                        'regby'=>'t',
                        'leavetype' => $value['leavetype'],
                       'attendance'    => $value['status'],
                );
                $str .= $this->db->insert_string('attendance', $obj);
                 $str.=';';

            }

        }
        $link = mysqli_connect('localhost','root','','yoga_panel');
        if(mysqli_multi_query($link,$str))
        {
            $output=array('result'=>true);
            return $output;
        } 
    }

如何在Codeigniter中运行以分号分隔的多个查询

1 个答案: