No matter how good a programmer you are, you will at some point find that there are at least one or two errors in your codesometimes because you hit the wrong key while typing, other times because you misunderstood how a function worked, and sometimes even because you were coding at 5 a.m. It is important to understand the arsenal that PHP puts at your disposal.

Chapter10.1: Basic Debugging Technique

Chapter10.2: Making Assertions

Chapter10.3: Triggering Your Own Errors

Chapter10.4: Testing with php_check_syntax( )

Chapter10.5: Source Highlighting

Chapter10.6: Handling MySQL Errors

Chapter10.7: Exception Handling

Chapter10.8: Backtracing Your Code

Chapter10.9: Custom Error Handlers

Chapter10.10: Custom Exception Handlers

Chapter10.11: Using @ to Disable Errors

Chapter10.12: phpinfo( )

Chapter10.13: Output Style