The Evolution of the PHP Object Type

This first incarnation of object-oriented programming (OOP) support covered only the barest implementation of object-related characteristics. In the words of one core developer, "A PHP4 object is just an Array with some functions bolted onto the side." It is this generation of PHP objects that you'll explore now.

With the second major release of the Zend Engine (ZE2) found in PHP5, several new features found their way into PHP's OOP implementation. For example, properties and methods may now be marked with access modifiers to make them inaccessible from outside your class definition, an additional suite of overloading functions are available to define custom behavior for internal language constructs, and interfaces can be used to enforce API standards between multiple class chains. When you reach Chapter 11, "PHP5 Objects," you'll build on the knowledge you gain here by implementing these features in PHP5-specific class definitions.


Implementing Classes

The PHP Life Cycle

Variables from the Inside Out

Memory Management

Setting Up a Build Environment

Your First Extension

Returning Values

Accepting Parameters

Working with Arrays and HashTables

The Resource Data Type

PHP4 Objects

PHP5 Objects

Startup, Shutdown, and a Few Points in Between

INI Settings

Accessing Streams

Implementing Streams

Diverting the Stream

Configuration and Linking

Extension Generators

Setting Up a Host Environment

Advanced Embedding

Appendix A. A Zend API Reference

Appendix B. PHPAPI

Appendix C. Extending and Embedding Cookbook

Appendix D. Additional Resources



Extending and Embedding PHP
Extending and Embedding PHP
ISBN: 067232704X
EAN: 2147483647
Year: 2007
Pages: 175
Authors: Sara Golemon

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