015.CI4框架CodeIgniter数据库操作之：带参数查询数

<?php namespace App\Models\System;

use CodeIgniter\Model;

class User_model extends Model
{
    var $Db;

    function __construct()
    {
        parent::__construct();
        //创建数据库连接
        $this->Db = \Config\Database::connect();
    }

    function getdata()
    {
        //带参数条件查询
        $sql = "SELECT * FROM tp_user WHERE ( ID = ? AND ( MARK = ?))";
        $sqlrst = $this->Db->query($sql, array(‘143‘, ‘2019091500000143‘));
        $rst = $sqlrst->getRow();
        return $rst;
    }

}

<?php namespace App\Controllers;

class Home extends BaseController
{
    // http://127.0.0.1/CI4/public/index.php/home/showdata

    var $User_Models;

    function __construct()
    {
        //创建数据库连接
        $this->User_Models = new \App\Models\System\User_model();
    }

    public function showdata()
    {
        $rst = $this->User_Models->getdata();
        ShowMessage($rst);
    }
}