Question

Is it possible to create a function out of a class method?

ie.

class Test {

    public function __construct()
    {
        if ( ! function_exists('foo') ) {
            function foo ()
            {
                 return $this->foo();
            }
        }
    }

    private function foo()
    {
        return 'bar';
    }

}

Or would I have to do it the other way around, creating a function and using it within the method?

Answer 1

Just do it like that, php is able to do it

class Test {

    public function __construct()
    {
        if ( ! function_exists('foo') ) {
            function foo ()
            {
                 return $this->foo();
            }
        }
    }

    private function foo()
    {
        outsidefunction();
        return 'bar';
    }

}

private function outsidefunction()
{
   return 0;
}