Attention

TYPO3 v6 has reached its end-of-life April 18th, 2017 and is not maintained by the community anymore. Looking for a stable version? Use the version switch on the top left.

There is no further ELTS support. It is strongly recommended updating your project.

TYPO3 API overview

The source is the documentation! (General wisdom)

The TYPO3 APIs are first and foremost documented inside of the source scripts. It would be impossible to maintain documentation at more than one location given the fact that things change and sometimes fast. This chapter describes the most important elements of the API. Some other elements have their own chapter further on.

In general the TYPO3 Active Contributors Team and all contributors aim to produce well-documented source code. As such the best way to look up a particular class or method is to use the online API browser at http://api.typo3.org/documentation/.

• Namespaces
• Autoloading
• Bootstrapping
• Main classes and methods
  • High priority functions
  • Functions typically used and nice to know
• Variables and Constants
  • Constants
  • Global variables
• Backend User Object
• TYPO3 Core Engine (TCE)
  • Database: TCEmain basics
  • Using TCEmain in scripts
  • The "tce_db.php" API
  • File functions basics
  • The "tce_file.php" API
• Programming with workspaces in mind
• Using the system log
• Logging with TYPO3
  • Logger
  • Configuration of the Logging system
  • The LogRecord model
  • Log Writers
  • Log Processors
• Using the system registry
• Mail API
• Form protection tool
• Flash messages
• TypoScript Syntax
  • What Is TypoScript?
  • Syntax
    • Introduction
    • Contexts
    • TypoScript syntax
    • Conditions
    • Includes
  • Sorting out Details
    • Parsing, Storing and Executing TypoScript
    • Myths, FAQ and Acknowledgements
  • The TypoScript Parser API
    • Introduction
    • Parsing Custom TypoScript
• System categories
• System collections
• HTTP request library
• Hooks
  • The concept of "hooks"
  • Hook configuration
  • Creating hooks
• Extending classes (XCLASSes)
• Various examples
  • Rendering page trees
  • Accessing the clipboard
  • Context-Sensitive Menus
  • Parsing HTML
  • Links to edit records
  • Support for custom tables in the Page module
  • Adding elements to the Content Element Wizard
  • Using custom permission options