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phpnamespacespsr-0

Function and class on the same file: undefined function

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?

Solution

  • 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 finalDocs as well, however PHP does not support that (see Cannot create a final abstract class­PHP Sadness #41).

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