Objects in PHP

Objects in PHP - module H108

As your PHP application grows, you'll want to use the same logic on many pages without having to duplicate it, and you'll want to group together all the code that refers to a particular type of data (also known as a class of object). PHP has good support for objects as from release 4, and that support is greatly enhanced from release 5.

This topic is presented on public course Object Oriented Programming in PHP

Examples from our training material

accos.php	Complete example with polymorphism and inheritance
animal1.php	An Abstract class - cannot construct directly
animal2.php	Abstract class, extended to a subclass, instantised via the subclass
animal3.php	Abstract class and interface example
bewarethedog.php	Object copying - beware - differs in PHP4 and PHP5
demo.php	PHP Version tester
dog.inc	Simple class in PHP
dogdisc.php	Serialization of an object for save and restore
dogs.inc	Simple class in PHP
elligant.php	Gant chart in PHP
equip.inc	equip.inc - define pieces of equipment (base class)
equtest.php	PHP example - objects, foreach, array_push ....
equtest.php4	Explicits PHP4 - objects, foreach, array_push ....
hound.inc	Simple class in PHP
kennel.php	Application to use class hound
ns.php	Namespaces in PHP5 - a short syntaax demo
pdemo.php	PHP application using places.inc - create array of place objects from file
pets.php	Test page for the dog.inc class
places.inc	A PHP abstract class (places) with postcode, county and other subclasses
pps	Data for Gant Chart Demo
serversys.inc	Server system - a derived class
staffsys.inc	Staff system - a derived class
studentsys.inc	Student system - a derived class
systems.php	Objects and inheritance - main worked example program
systems.php4	Objects and inheritance - main worked example program
systems.txt	Data file for systems example
valentines.php	Inheritance, Overloading, Polymorphism in PHP objects

Specialist books

Opentalk forum discussions related to this topic

Objects in PHP5

Background information

Some modules are available for download as a sample of our material or under an Open Training Notes License for free download from http://www.training-notes.co.uk.

Topics covered in this module

Design and structure.
The limitations of structured programming and the need for objects.
Object Orientation.
An Introduction to objects in PHP.
Defining simple objects in PHP.
Using an object.
Defining inheritance.
Polymorphism.
A practical example.
A table of trainee workstations.
A table of all our workstations.
Where do classes load from?.
A comment on objects in PHP.
Objects in PHP5.
Private, protected and public members and the final keyword.
Constructor and destructor methods.
Extensions to Object Inheritance.
PHPÕs inheritance model, and Interfaces.
Object model differences PHP4 to PHP5.
Advanced objects in PHP5.
Cloning and equality.
Serialization.
autoload.
namespaces.

Complete learning

If you are looking for a complete course and not just a information on a single subject, visit our Listing and schedule page.

Well House Consultants specialise in training courses in Python, Perl, PHP, and MySQL. We run Private Courses throughout the UK (and beyond for longer courses), and Public Courses at our training centre in Melksham, Wiltshire, England. It's surprisingly cost effective to come on our public courses - even if you live in a different country or continent to us.

We have a technical library of over 600 books on the subjects on which we teach. These books are available for reference at our training centre. Also available is the Opentalk Forum for discussion of technical questions.