php 调用未定义的方法 CI_Controller::Controller()
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Call to undefined method CI_Controller::Controller()
提问by BlackFire27
I have got this controller:
我有这个控制器：
class Start extends CI_Controller{
var $base;
var $css;
function Start()
{
parent::Controller(); //error here.
$this->base = $this->config->item('base_url'); //error here
$this->css = $this->config->item('css');
}
function hello($name)
{
$data['css'] = $this->css;
$data['base'] = $this->base;
$data['mytitle'] = 'Welcome to this site';
$data['mytext'] = "Hello, $name, now we're getting dynamic!";
$this->load->view('testView', $data);
}
}
it tells me in this line:
它在这一行告诉我：
parent::Controller(); //error here.
父::控制器(); //此处出错。
Call to undefined method CI_Controller::Controller()
If I remove that line..I get an error for the next line that says..
如果我删除那条线..我收到下一行的错误，说..
Call to a member function item() on a non-object
How do I prevent such errors form happening?
如何防止发生此类错误？
回答by Kokers
If you're using CI 2.x then your class constructor should look like this:
如果您使用的是 CI 2.x，那么您的类构造函数应如下所示：
public function __construct()
{
parent::__construct();
// Your own constructor code
}
read more in user guide
在用户指南中阅读更多内容
回答by Kemal Fadillah
In CodeIgniter 2, the constructor is named __constructorand not the class name. So you need to call parent::__construct()instead of parent::Controller()
在 CodeIgniter 2 中，构造函数被命名__constructor而不是类名。所以你需要打电话parent::__construct()而不是parent::Controller()
Here's an article that you can read that shows one major difference between CodeIgniter 1.x and CodeIgniter 2.x
这是一篇您可以阅读的文章，其中显示了 CodeIgniter 1.x 和 CodeIgniter 2.x 之间的一个主要区别
http://ulyssesonline.com/2011/03/01/differences-between-codeigniter-1-7-2-and-2-0-0/
http://ulyssesonline.com/2011/03/01/differences-between-codeigniter-1-7-2-and-2-0-0/
