PHP Programming Language - OpenLibra

TYPO3 330
Design
The system uses a special language called TypoScript. TypoScript can be used to fetch data from the database,
process this data and generate web content. Usually TypoScript includes one of available template engines (such as
automaketemplate or TemplaVoila). These template engines create output based on one or more HTML templates.
TYPO3 defines various types of data. Standard types include: text, image, text with image, html, table, video, lists,
etc. These types can be extended by a user through plugins. The most fundamental type is "page". Every element that
can appear to the user, belongs to a certain page. Pages are hierarchical with no limit to nesting level. There are
special page types such as shortcuts (viewing this page directs the user to another page), mount points (allows to
mount a part of the page tree at the mount point), external URL, etc.
Logically TYPO3 consists from two parts: the Frontend and the Backend. The Frontend is a part responsible for
generation and display of web content. The Backend is responsible for administration.
Almost everything is TYPO3 is made to be pluggable and extendable. For example, TYPO3 includes many user
authentication methods (such as RSA shared keys or OpenID). They are implemented as extension to the main
system.
TYPO3 is a complex framework with almost unlimited possibilities. Developers may find information at various
places, such as:
• the official developer's resource (typo3.org [3] )
• TYPO3 wiki (wiki.typo3.org [4] )
• TYPO3 mailing lists (lists.typo3.org [5] ). Lists also have a usenet interface and are readable with a newsreader.
TypoScript
The basic syntax is:
[objectpath].[attribute] [operator] [value]
Operators include:
• = assignment of a value
• < copy a whole object
• =< insert a reference
• > remove object
Examples:
page.10 = TEXT
page.10.value = Hello, world!
It must be noted that TypoScript is not a programming language. The following code will trigger no action in
TYPO3 while it will trigger item creation and removal in programming languages:
page.10 = TEXT
page.10.value = Hello, world!
page.10 >
In this example a TypoScript object "page.10" was created and immediately removed. When TYPO3 parses
TypoScript, it will remove object declaration of "page.10" before actually processing created objects.