array not added to PHP class' property

I'm new to OOP PHP and have been following Laracasts OOP Bootcamp. I have reached a certain part of the tutorial where I'm having trouble. I have the following file (ignore that conventions were not followed, as it is the learning phase):

public function members() { return $this->members; } }

class Business { protected $staff;

public function __construct(Staff $staff)
{
    $this->staff = $staff;
}

public function hire(Person $person)
{
    $this->staff->add($person);
}

public function getStaffMembers()
{
    return $this->staff->members();
}

}

$jeffrey = new Person('Jeffrey Way');

$staff = new Staff([$jeffrey]);

$laracasts = new Business($staff); $laracasts->hire(new Person('Jane Doe'));

var_dump($laracasts->getStaffMembers());

Unfortunately, the var_dump is only giving me one staff member:

array(1) { [0]=> object(Person)#4 (1) { ["name":protected]=> string(8) "Jane Doe" } }

I have tried adding [] to the line $this->members = $members; under Staff class but it's still giving me the same output. I've also double checked the files, I should be expecting two members instead of one.

Can someone tell me where I went wrong?