The following programming and typesetting conventions are used in this book.
The <?php and
?> opening and closing markers that begin and
end a PHP program are generally omitted from examples in this book,
except in examples where the body of the code includes an opening or
closing marker.
The examples in this book were written to run under PHP 5 on both Unix and Windows, except where noted in the text.
At the time this book went to press, the latest available version of PHP 5 was Release Candidate 3 (RC3). Also, MySQL 4.1 was in beta. It is possible that some changes may occur between RC3 and the final release. Please check the online errata at http://www.oreilly.com/catalog/upgradephp5/errata/ for any last-minute updates.
The following typographical conventions are used in this book:
- Italic
Indicates new terms, URLs, email addresses, filenames, file extensions, pathnames, and directories.
-
Constant width Indicates commands, options, switches, variables, attributes, keys, functions, types, classes, namespaces, methods, modules, properties, parameters, values, objects, events, event handlers, XML tags, HTML tags, macros, the contents of files, or the output from commands.
-
Constant Width Bold Indicates the output from code examples.
-
Constant width italic Shows text that should be replaced with user-supplied values.
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