seamas zhou:

I am studying the CodeIgniter framework and trying to build a login and registration system. In the bottom are two functions in the controllers for login and registration. People suggest me using "'password' => password_hash($this->input->post('password'), PASSWORD_BCRYPT, $options)," instead of MD5 for password. I tried to do that but not works. Can you guys help me with this? Do I need change anything else in my model or view? Thank you guys very much

Controllers: Login function

if($this->input->post('loginSubmit')){
        $this->form_validation->set_rules('email', 'Email', 'required|valid_email');
        $this->form_validation->set_rules('password', 'password', 'required');
        if ($this->form_validation->run() == true) {
            $con['returnType'] = 'single';
            $con['conditions'] = array(
                'email'=>$this->input->post('email'),
                'password' => md5($this->input->post('password')),
                'status' => '1'
            );

            $checkLogin = $this->user->getRows($con);
            if($checkLogin){
                $this->session->set_userdata('isUserLoggedIn',TRUE);
                $this->session->set_userdata('userId',$checkLogin['id']);
                redirect('users/account');
            }else{
                $data['error_msg'] = 'Wrong email or password, please try again.';
            }
        }
    }

registration function

$data = array();
    $userData = array();

    if($this->input->post('regisSubmit')){
        $this->form_validation->set_rules('name', 'Name', 'required');
        $this->form_validation->set_rules('email', 'Email', 'required|valid_email|callback_email_check');
        $this->form_validation->set_rules('password', 'password', 'required');
        $this->form_validation->set_rules('conf_password', 'confirm password', 'required|matches[password]');

        $userData = array(
            'name' => strip_tags($this->input->post('name')),
            'email' => strip_tags($this->input->post('email')),
            'password' => md5($this->input->post('password')),
            'gender' => $this->input->post('gender'),
            'phone' => strip_tags($this->input->post('phone'))
        );

        if($this->form_validation->run() == true){
            $insert = $this->user->insert($userData);
            if($insert){


                $this->session->set_userdata('email',$userData['email']);
                redirect('email');
            }else{
                $data['error_msg'] = 'Some problems occured, please try again.';
            }

And here is my getRows function in the models.

    function getRows($params = array()){
    $this->db->select('*');
    $this->db->from($this->userTbl);


    //fetch data by conditions
    if(array_key_exists("conditions",$params)){
        foreach ($params['conditions'] as $key => $value) {
            $this->db->where($key,$value);
        }
    }

    if(array_key_exists("id",$params)){
        $this->db->where('id',$params['id']);
        $query = $this->db->get();
        $result = $query->row_array();
    }else{
        //set start and limit
        if(array_key_exists("start",$params) && array_key_exists("limit",$params)){
            $this->db->limit($params['limit'],$params['start']);
        }elseif(!array_key_exists("start",$params) && array_key_exists("limit",$params)){
            $this->db->limit($params['limit']);
        }
        $query = $this->db->get();
        if(array_key_exists("returnType",$params) && $params['returnType'] == 'count'){
            $result = $query->num_rows();
        }elseif(array_key_exists("returnType",$params) && $params['returnType'] == 'single'){
            $result = ($query->num_rows() > 0)?$query->row_array():FALSE;
        }else{
            $result = ($query->num_rows() > 0)?$query->result_array():FALSE;
        }
    }

    //return fetched data
    return $result;
}