Você procurou por: constructors (Coreano - Inglês)

참고: in php 4, only constant initializers for var variables are allowed. use constructors for non-constant initializers.
you cannot have functions with these names in any of your classes unless you want the magic functionality associated with them.

aggregates methods and properties defined in a class to an existing object. methods and properties with names starting with an underscore character (_) are considered private to the aggregated class and are not used, constructors are also excluded from the aggregation procedure.
methods and properties with names starting with an underscore character (_) are considered private to the aggregated class and are not used, constructors are also excluded from the aggregation procedure.

to copy this complex kind of data, use the copy constructor. copy constructors are typically defined in languages that support operator overloading, with the express purpose of copying complex types. if you define an object in such a language, you have the possibility of overloading the "=" operator, which is usually responsible for assigning the contents of the lvalue (result of the evaluation of the left side of the operator) to the rvalue (same for the right side).
by assigning one zval to another, you avoid duplicating the hash table entries, using only a reference to them (at most).