Object serialization: Difference between revisions

Create a set of data types based upon inheritance. Each data type or class should have a print command that displays the contents of an instance of that class to standard output. Create instances of each class in your inheritance hierarchy and display them to standard output. Write each of the objects to a file named ''objects.dat'' in binary form using serialization or marshalling. Read the file ''objects.dat'' and print the contents of each serialized object.

Serialization in PHP is straightforward. The built-in function [http://www.php.net/manual/en/function.serialize.php serialize()] handles it in a single statement.

In order to unserializeun-serialize the object, use the [http://www.php.net/manual/en/function.unserialize.php unserialize()] function. Note that the class of object must be defined in the script where unserializationun-serialization takes place, or the class' methods will be lost.

def initialize(specialityspecialty=nil)

@specialityspecialty=specialityspecialty

"(object_id = #{object_id})\n"+"(#{self.class}):".ljust(12)+to_s4Being+(@specialityspecialty ? "\n"+" "*12+@specialityspecialty : "")

class MamalMammal < Earthling

"I am champion in taking care of my offspring and eating eveythingeverything I can find, except mamalsmammals of type #{@type}."

diverseCollection << (me=MamalMammal.new(:human))