If you are trying to create another object, and use it in another class/object then this is possible. As long as all classes are included on the page.
EXAMPLE:
class Something{
function Something{
/*CONSTRUCTOR*/
$somethingObj = new SomethingElse();
}
}
class SomethingElse{
//Some methods
}
This would create an object of SomethingElse on construction of Something. It would be accesses in the Something class using;
$somethingObj->.
