The PHP Workshop

8. Error Handling

Overview

By the end of this chapter, you will be able to describe the different error levels in PHP; use a custom error handler; trigger and log error messages; catch fatal errors at shutdown; explain how exceptions work in PHP; define, use, and catch multiple exception classes; and register a top-level exception handler.

Also, in this chapter, you will trigger so-called user-level error messages and how they can be helpful. In the last part, you will learn about exceptions and how they can be used to control script flow.

Introduction

In the previous chapter, you were presented with the ways in which PHP can be used to interact with a filesystem in order to process uploaded files, write in text files, and create files ...