Streams Overview

Often a direct file descriptor will be less CPU- and memory-intensive than calling through the streams layer; however, it places all the work of implementing a particular protocol on you as the extension writer. By hooking into the streams layer, your extension code can transparently use any of the built-in stream wrappers such as HTTP, FTP, and their SSL-enabled counterparts, as well as the gzip and bzip2 compression wrappers. By including certain PEAR or PECL modules, your code also has access to other protocols such as SSH2, WebDav, and even Gopher!

This chapter will introduce the basic API for working with streams from the internals. Later on, in Chapter 16, "Diverting the Stream," you'll take a look at more advanced concepts like applying filters and using context options and parameters.


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

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