PHP versions documented in this manual

- This documentation contains information about bot PHP 4 and PHP 5, with

some added migration and compatibility notes regarding PHP 3. Behaviour,

parameter, return value and other changes between different PHP

versions are documented in notes and inline text in the manual.

- You may find documentation pieces for the CVS version of PHP, which

always means the very latest development version available through

the CVS version handling system. If you are not a developer of PHP

itself, and you are not keen on using the very latest development

version of PHP, features marked with the "available in CVS" wording

are not accessible to you. These features, though, will probably be

available in the next stable version of PHP. If you would like to

download the CVS version, see the anonymous

- You may also encounter documentation for a PHP version which is

not released (something like PHP 5.0.0 while the latest stable version

is 4.3.x). Most of the time, this is not an error in the documentation.

Explanation is often added for features not available in the current

PHP release, but which will be available in a known future PHP version.

How to read a function definition (prototype)

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PHP. Учебник. 2005