Function and class on the same file: undefined function

Question

I have a file with a class and a function definition, according to the PSR-0 definitions (with autoloading):

namespace Foo;

function b() {};

class Bar {}

And I have the test for that class, place in the same namespace:

namespace Foo;

class BarTest {}

When I try to access the b() function inside the test class, I get a undefined function error:

namespace Foo;

class BarTest extends PHPUnit_Framework_TestCase
{
    public function testSomething()
    {
        b();
        Foo\b();
        \b();
    }
}

Nothing seems to work. How can I call that function?

Did you include the file that contains `b` and `Bar`? It might be that you've got some autoloading that will not include the file with `Bar` until you use that class. — Halcyon, Mar 09 '13 at 00:26
What do you want to achieve by `testSomething()` `b(); Foo\b(); \b();` — Mehdi Karamosly, Mar 09 '13 at 00:28
@FritsvanCampen I edited the question with autoloading info. — Daniel Ribeiro, Mar 09 '13 at 00:29
@FritsvanCampen it does work if I instantiate the object first. — Daniel Ribeiro, Mar 09 '13 at 00:30

score 1 · Accepted Answer · edited May 23 '17 at 10:32

PHP autoloading does not support functions. However it does work for static class methods:

namespace Foo;

abstract class Util
{
    static function doSomething() {

    }
}

You can then use that class in some other files current namespace and call the static method:

use Foo\Util;

Util::doSomething();

As this is a class method and autoloading is for classes, this does work then.

Take care that the more correct way to group methods inside a namespace / class is probably making it final^Docs as well, however PHP does not support that (see Cannot create a final abstract class^{PHP Sadness #41}).

You find this as well outlined in the following Q&A Material here on the site:

Autoloader for functions - Jan 19 '11
autoload functions in php - Nov 16 '10
Does the PHP autoloader function also work with static method calls? - Jan 11 '10

score 0 · Answer 2 · answered Mar 09 '13 at 00:28

0

Your function b(); must have body, change it to

function b(){};

answered Mar 09 '13 at 00:28

Vahe Shadunts

1,956
14
18

Actually it does have a body. It was a typo. – Daniel Ribeiro Mar 09 '13 at 00:29
Please look at this @drgomesp http://codepad.viper-7.com/e5Momf – Vahe Shadunts Mar 09 '13 at 00:35
The thing is, I wanna call the `b()` function from outside, and not have a wrapper method inside the object of that class. – Daniel Ribeiro Mar 09 '13 at 00:36
hmm interesting question, guess I have understand the problem such it is.. http://codepad.viper-7.com/3WMaFY – Vahe Shadunts Mar 09 '13 at 00:41
Except I don't want to use the `b()` function inside the class itself, but always outside. I just want to declare the class inside that namespace and that particular file. – Daniel Ribeiro Mar 09 '13 at 00:43

Function and class on the same file: undefined function

2 Answers2