Versions of Software Covered in This Book

As of this writing, the current general release of MySQL is the 4.0 version series, and active development is taking place in the 4.1 series. This book covers them both, as well as earlier 3.22 and 3.23 features.

For the other major packages discussed here, any recent versions should be sufficient for the examples in this book. Current versions are:

Package	Version
Perl DBI	1.32
Perl MySQL DBI driver	2.1020
PHP	4.2.3
Apache	1.3.27/2.0.43
CGI.pm	2.87

All the software discussed in this book is available on the Internet. Appendix A, "Obtaining and Installing Software," provides instructions for getting MySQL, Perl DBI support, PHP, Apache, and CGI.pm onto your system. This appendix also contains instructions for obtaining the sample database that is used in examples throughout this book, as well as the example programs that are developed in the programming chapters.