Appendix B. Troubleshooting with PHP

Errors are inevitable in any large program. However, the trick is to understand the messages that you are given so that you can locate the bug and fix it. That is what this appendix is all about. First, I discuss the common errors given by either the Zend engine or by the different PHP modules, and then I discuss some of the classic ways to cut down on errors in your code. Please keep in mind that although the information in this appendix will help you gain valuable time when debugging your program, there is no substitute for proper planning.