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();