About the manual

Appendix R. About the manual


The PHP manual is provided in several formats. These formats can be divided into two groups: online readable formats, and downloadable packages.

Note: Some publishers have made available printed versions of this manual. We cannot recommend any of those, as they tend to become out-of-date very quickly.

The manual can be read online at the PHP.net website, and on the numerous mirror sites. For best performance, choose the closest mirror. The HTML version of the PHP manual is in either plain (print-friendly) HTML format or an HTML format that integrates the manual into the look and feel of the PHP website itself.

Two notable advantages of the online manual over most of the offline formats is the integration of user-contributed notes and the URL shortcuts that may be used to get to the desired manual parts quickly. An obvious disadvantage is the requirement to be online to view this edition of the manual.

There are several offline formats of the manual, and the most appropriate format for depends on the operating system, and personal reading style. For information on how the manual is generated in so many formats, read the 'How we generate the formats' section of this appendix.

The most cross-platform format of the manual is the HTML version. This is provided both as a single HTML file and as a package of individual files for each section (which results in a collection of several thousand files). We provide these versions compressed, so a decompression utility is required to retrieve the files contained within the archives.

For Windows platforms, the Windows HTML Help version of the manual enhances the HTML format for use with the Windows HTML Help application. This version provides full-text search, a full index, and bookmarking. Many popular Windows PHP development environments also integrate with this version of the documentation to provide easy access. CHM viewers for Linux desktops are also available. Check out xCHM or GnoCHM.

There is also an extended CHM version available, which is updated less frequently, but provides many additional features. It will only work on Microsoft Windows though, because of the technologies used to build the help pages.

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