Attention

TYPO3 v10 has reached end-of-life as of April 30th 2023 and is no longer being maintained. Use the version switcher on the top left of this page to select documentation for a supported version of TYPO3.

Need more time before upgrading? You can purchase Extended Long Term Support (ELTS) for TYPO3 v10 here: TYPO3 ELTS.

T3DataStructure

TYPO3 offers an XML format, T3DataStructure, which defines a hierarchical data structure. In itself the data structure definition doesn't do much - it is only a back bone for higher level applications which can add their own configuration inside.

Such applications can be:

  • FlexForms - a TCEform type which will allow users to build information hierarchies (in XML) according to the Data Structure. In this sense the Data Structure is like a DTD (Document Type Definition) for the backend which can render a dynamic form based on the Data Structure;

  • TemplaVoila! - an extension which uses the Data Structure as backbone for mapping template HTML to data.

This documentation of a data structure will document the general aspects of the XML format and leave the details about FlexForms and TemplaVoila to be documented elsewhere.

Some other facts about Data Structures (DS):

  • A Data Structure is defined in XML with the document tag named "<T3DataStructure>"

  • The XML format generally complies with what can be converted into a PHP array by GeneralUtility::xml2array() - thus it directly reflects how a multidimensional PHP array is constructed.

  • A Data Structure can be arranged in a set of "sheets". The purpose of sheets will depend on the application. Basically sheets are like a one-dimensional internal categorization of Data Structures.

  • Parsing a Data Structure into a PHP array is incredibly easy - just pass it to GeneralUtility::xml2array() (see the Parsing a Data Structure section).

  • "DS" is sometimes used as short for Data Structure

Next chapters