Horde_HashTable_Base::exists PHP Method

Do the keys exists?

public exists ( mixed $keys ) : mixed
$keys	mixed	The key or an array of keys.
return	mixed	A boolean/array of booleans indicating existence (return type is the type of $keys).

    public function exists($keys)
    {
        return $this->_getExists($keys, array($this, '_exists'));
    }

Horde_HashTable_Base