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PHP workaround for multiple inheritance?

I know PHP doesn't support multiple inheritance. But I need a way to use functions between two or more classes:

Code:

class one

{

  function test1()

  {

    echo "one";

  }

}



$one = new one;



class two

{

  function test2()

  {

    $one->test1(); //This doesn't work



    global $one;

    $one->test1(); //Offcourse this does work



    one::test1(); //This also works



    // Using `class two extends one` also works, but what when i

    // wan't to use functions from a third class? It can't be done.

  }

}

I don't want to use 'global' in each function to make the class global. I prefer not to use one::test1(), because i wan't to keep working with objects. Although when there aren't any solutions, i can use it. Like i said before using `extends` isn't an option.

I also heard some people about using interfaces. But when you use interfaces, you still need to define the functions in each class.

So how should i do a workaround for multiple inheritance in PHP?

No direct answer

It really depends on what exactly you are doing as to what will make sense. Can you make any of the functions static?
http://us.php.net/manual/en/language.oop5.static.php
Can something be made into a singleton? Check out some design patterns with php.
http://www.ibm.com/developerworks/li...p-designptrns/

And to a certain extent, "a language is what a language is..."

You can tackle this through association. Have an instance of class one in class two and then you will be able to do $this->one->test1();