This documentation refers to an older version of CiviCRM (3.4 / 4.0). View latest version.

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This page refers to CiviCRM 3.4 and 4.0, current STABLE version.

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CiviCRM 3.4 and 4.0 Documentation

Support and Participation

Developer Resources

CiviCRM books!

Make sure to check out the FLOSS Manual Understanding CiviCRM as well! You can also support this project by ordering a hard copy.

Or support us by buying an eBook or hard copy of Using CiviCRM from Packt Publishing.

Develop CiviCRM

Can't find something? Try the Search function in the upper right-hand corner or the Contents list to your left.

Just Getting Started?

Start by reading the Extending CiviCRM section in the online book - Understanding CiviCRM and reading the online book Developer Guide

This section and book covers information for developers who want to customize CiviCRM, integrate CiviCRM with other modules using our APIs and Hooks, and learn more about CiviCRM architecture so that they can contribute to the codebase.

CiviCRM Architecture

Customizing CiviCRM Screens


Database Schema Diagram (ERD)- 3.1 version


CiviCRM Hooks

Useful CiviCRM URL Name-Value Pairs

Automated Installers

Installing CiviCRM from subversion (SVN) repository

Testing Framework

Code Contribution Guidelines

Internationalization and localization

Useful SQL queries

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