Crapola

gistfile1.txt

interface ChainedInterface
{
    public function init();

    public function prerequisites();
}

class SetupVHost implements ChainedInterface
{
    public function init()
    {
        $this->prerequisites();
    }

    public function prerequisites()
    {
        
    }
}

class SetupMySQL implements ChainedInterface
{
    public function init()
    {
        $this->prerequisites();
    }

    public function prerequisites()
    {
        $this->SetupVHost->init();
    }
}