Arrays and Array-style COM properties

Many COM objects expose their properties as arrays,
or using array-style access.

You can:

• Access multi-dimensional arrays, or COM properties
  that require multiple parameters using PHP array syntax. You can
  also write or set properties using this technique.

• Iterate SafeArrays (“true” arrays) using the
  foreach
  control structure. This works because SafeArrays include
  information about their size. If an array-style property implements
  IEnumVariant then you can also use foreach for that property too;
  take a look at For
  Each for more information on this topic.