ExpressionEngine® 3 User Guide

Legacy Documentation

You are using the documentation for version 3.5.17. Go here for the latest version or check here for your available upgrades to the latest version.

Add-On Development

Guidelines, reference material, and tutorials for developing add-ons for ExpressionEngine.

Legacy Documentation

Many of the libraries and helpers available in ExpressionEngine 2 continue to function as expected. They are earmarked for replacement in the future, but are not yet deprecated. Use these freely until replacement libraries or services are created.