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Installing and Configuring PHP

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This chapter is from the book

Chapter 3: Installing and Configuring PHP

In the last of the three installation-related chapters, you will acquire, install, and configure PHP and make some basic changes to your Apache installation. In this chapter, you will learn

  • How to install PHP with Apache on Linux/Unix

  • How to install PHP with Apache server on Windows

  • How to test your PHP installation

  • How to find help when things go wrong

  • The basics of the PHP language

Current and Future Versions of PHP

The installation instructions in this chapter refer to PHP version 4.3.3, which is the current version of the software. The PHP Group uses minor release numbers for updates containing security enhancements or bug fixes. Minor releases do not follow a set release schedule; when enhancements or fixes are added to the code and thoroughly tested, the PHP Group will releases a new version, with a new minor version number.

It is possible that by the time you purchase this book, the minor version number will have changed, to 4.3.4 or beyond. If that is the case, you should read the list of changes at http://www.php.net/ChangeLog-4.php for any changes regarding the installation or configuration process, which makes up the bulk of this chapter.

Although it is unlikely that any installation instructions will change between minor version updates, you should get in the habit of always checking the changelog of software that you install and maintain. If a minor version change does occur during the time you are reading this book, but no installation changes are noted in the changelog, simply make a mental note and substitute the new version number wherever it appears in the installation instructions and accompanying figures.


For instructions on installing PHP from the CD, please refer to Appendix A, "Installing MySQL, Apache, and PHP from the CD-ROM."

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