错误:未定义的属性$ load [英] Error: undefined property $load

问题描述

我是Codeigniter的新手，我已经开发了一个代码来对数据库进行查询.我使用$this->load->database();加载数据库并执行查询，但是当我运行代码时，浏览器会显示以下错误消息:

I am new to codeigniter, and I have developed a code to carry out queries on the database. I load the database using$this->load->database(); and perform a query, but when I run the code, the browser gives me the following error message:

A PHP Error was encountered Severity: Notice Message: Undefined property: Tutorial::$load.
Fatal error: Call to a member function database() on a non-object

这是我正在使用的代码:

This is the code I am using:

class Tutorial extends CI_Controller {
    public function tutorial() {
        $this->load->database();
        $query = $this->db->query('SELECT user,pass,email FROM tablex');
        foreach ($query->result() as $row) {
            echo $row->title;
            echo $row->name;
        }

我确定数据库配置文件中的$db变量已正确设置，甚至尝试为autoload.php配置文件中的所有页面自动加载数据库；仍然有同样的问题.有任何想法如何解决这个问题吗?

I am sure the $db variables in my database configuration file are properly set and I have even tried autoloading the database for all pages in the autoload.php config file; still having the same problem. Any ideas how to go about this?

推荐答案

更改

$this->load->database();

到

$this->load->library('database');

数据库不是直接方法.它是codeigniter中的一个库，您必须将其作为库加载.

database is not a direct method. It is a library in codeigniter and you have to load it as a library.

您还可以在autoload.php中自动加载database库.

You can also autoload database library in autoload.php.

更新:

您为类和方法使用了相同的名称.在PHP4中，与类名同名的方法被视为构造函数，但是如果您使用的是Codeigniter 2+，则必须使用PHP5构造函数，

You are using the same name for your class and method. In PHP4, a method which has the same name as class name was treated as constructor, but if you are using codeigniter 2+, you have to use PHP5 constructor which is

function __construct()
{
    parent::__construct();
    /*Additional code which you want to run automatically in every function call */
}

在Codeigniter 2+中，您不能为方法提供与类名称相同的名称.将方法更改为其他任何方法.如果要默认加载方法，可以将方法命名为index.

You cannot give a method same name as class name in Codeigniter 2+. Change the method to anything else. You can name the method index if you want it to load by default.

这应该可以解决您的问题.

This should solve your problem.

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