Type hinting - specify an array of objects

Question

How can I specify the argument type as an array? Say I have a class named \'Foo\':

class Foo {}

and then I have a function that accepts tha

Answer 1

function getFoo()

Generally, you would then have an add method that would typehint to Foo

function addFoo( Foo $f )

So, the getter would return an array of Foo's and the add method can ensure you only had Foo's to the array.

EDIT Removed the argument from the getter. I don't know what I was thinking, you don't need an argument in a getter.

EDIT just to display the a full class example:

class FooBar
{
    /**
     * @return array
     */
    private $foo;

    public function getFoo()
    {
        return $foo;
    }

    public function setFoo( array $f )
    {
        $this->foo = $f;

        return $this;
    }

    public function addFoo( Foo $f )
    {
        $this->foo[] = $f;

        return $this;
    }
}

You generally, and probably shouldn't, have the setter method since you have the add method to help ensure $foo is an array of Foo's but it helps illustrate what is going on in the class.