Summary

This tutorial wrapped up the three-part series on "Learning PHP" while you built a simple workflow application. Earlier parts focused on the basics, such as syntax, form handling, database access, file uploading, and XML. In this part, you took all that a step further and put it together by creating a form through which an administrator could approve various files. We discussed the following topics:

• Using HTTP authentication
• Streaming files
• Creating classes and objects
• Object properties and methods
• Using object constructors
• Using exceptions
• Creating custom exceptions
• Using XML ID attributes
• Performing additional security checks for downloads

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Table of contents

• Before you start
• The story so far
• Using HTTP authentication
• Using streams
• Using objects
• Handling exceptions
• Putting it together
• Summary
• Resources
• About the authors

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