调用数组上的成员函数 num_rows() 如何解决此错误

Question

我收到错误消息：

调用数组上的成员函数 num_rows()

我的控制器是

 function index() {

        $config=[

            'base_url' => base_url('Users'),

            'per_page' =>5,

            'total_rows' => $this->Useraccount_mod->num_row(),

        ];

        $this->pagination->initialize($config);

        if ($this->input->post('submit') != NULL) {

            $data = array();

            $data['username'] = $this->input->post('username');

            $data['name'] = $this->input->post('name');

            $result['data'] = $this->Useraccount_mod->getUser_list($data,$config['per_page'], $this->uri->segment(2));

            $data['userlist'] = $result['data'];

            $this->load->view('Useraccount/Userlist', $data);

        } else {

            $data = array();

            $result['data'] = $this->Useraccount_mod->getUser_list($data,$config['per_page'], $this->uri->segment(2));

            $data['userlist'] = $result['data'];

            $this->load->view('Useraccount/Userlist', $data);

        }

    }

模型是

 function getUser_list($data, $limit, $offset) {

        if ($data) {

            $this->db->like('username', $data['username']);

            $this->db->like('name', $data['name']);

            $query = $this->db->get('users')->limit($limit, $offset)->get();

            return $query->result_array();

        } else {

            $query = $this->db->get("users")->limit($limit, $offset)->get();

            return $query->result_array();

        }

    }

    function num_row() {

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

        $total_rows= $query->result_array()->num_rows();

        print_r($total_rows);

         return $total_rows;

    }

遇到 PHP 错误 严重性：错误

消息：调用数组上的成员函数 num_rows()

文件名：models/Useraccount_mod.php

行号：41

回溯：

Answer 1

$total_rows= $query->result_array()->num_rows();是它打破的地方。result_array()对我来说听起来很像它返回一个数组。所以，重构：$total_rows = count($query->result_array());

Answer 2

改变$total_rows= $query->result_array()->num_rows();至$total_rows= count($query->result_array());$query->result_array()返回一个数组，您可以使用count

Answer 3

$total_rows= $query->num_rows();