getattr(getattr(object_identifier,variable_containing_the_name_of_method_one), variable_containing_the_name_of_method_two)

##</code><code>##

$object_identifier->$variable_containing_the_name_of_method_one->$object_containing_the_name_of_method_two

##</code><code>##

$obj->$var1->$var2

##</code><code>##

gettattr( getattr(obj,var1) , var2)