"Cannot redeclare class" issue in FuelPHP

Question

Working namespaces in a default FuelPHP installation I add the following to the welcome controller (otherwise unedited) and I start getting the error:

ErrorException [ Compile Error ]: Cannot redeclare class Fuel\Controller\Welcome"

The code I is:

<?php

namespace Fuel\Controller;

use Fuel\Core\Controller;


class Welcome extends Controller
{
...
}

This is probably a beginner's question but I just can't figure out why the collision is occurring and I have tried everything I can think of.

EDIT: I even tried putting the following code in front of the class and the error disappeared but a very generic looking 404 page was displayed. (Not the one that is displayed by default with FuelPHP but a black/grey one)

if (class_exists("Controller\Welcome",false)) {
//    echo "here. (" . __FILE__ . ":" . __LINE__ . ")\n";

} else {
    //Class definition...

}

It's the default install, I have only changed the namespace and the use. That's it. I tried changing "welcome" to "welcomeABC" and got the same error: "ErrorException [ Compile Error ]: Cannot redeclare class Fuel\Controller\WelcomeABC" — paullb, Aug 26 '13 at 07:00
having a namespace called controller, while at the same time using a class called Controller is a bit iffy IMO... best write `use Fuel\Core\Controller as CoreController;` — Elias Van Ootegem, Aug 26 '13 at 07:03
Elias Van Ootegem > A reasonable precaution. I tried implementing it now but got no change in results. — paullb, Aug 26 '13 at 07:06

score 1 · Accepted Answer · answered Aug 27 '13 at 03:50

1

The answer turned out to be that you have to change the controller prefix in the config file to the following:

  'controller_prefix' => 'Controller\\',

Which is actually written in the documentation. (silly me)

answered Aug 27 '13 at 03:50

paullb

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score 0 · Answer 2 · edited May 23 '17 at 12:13

0

If your application has multiple classes with the same name Welcome, then it will give error

In one file

class Welcome extends Controller
{
   ...
}

In another file

class Welcome extends Controller
{
  ...
}

Possible duplicate of Codeigniter Cannot redeclare class Hierarchy. See this PHP Fatal error: Cannot redeclare class

edited May 23 '17 at 12:13

Community

1
1

answered Aug 26 '13 at 07:02

Rohan Kumar

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As I said above, I have not created multiple controllers called Welcome. This is a DEFAULT INSTALL of FuelPHP with only 2 lines changed (to add the namespace). Changing the name yields the same result so it is some issue with this file being read in twice by the framework. – paullb Aug 26 '13 at 07:07

Gadonski · Answer 3 · 2018-02-28T14:14:20.197

0

In your controllers, you dont need set the namespace. The app know the default namespace.

if you remove the namespace Fuel\Controller; this error will disappear.

edited Feb 28 '18 at 14:14

answered Aug 26 '13 at 12:06

Gadonski

3,150
2
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"Cannot redeclare class" issue in FuelPHP

3 Answers3