Welcome to the module developer's guide for Drupal 7!
This section includes tutorials and other information that you need to create modules for Drupal version 7.x.
Other general resources
- API reference: https://api.drupal.org/api/drupal/7
- Upgrading modules: Converting 6.x modules to 7.x and Change records for Drupal core
For a collection of useful materials for module developers, see Module Development with Drupal.
Also use Coder Module to verify your code against drupal coding standards and best practices, It can also fix coding standard violations for you with the phpcbf command from PHP_CodeSniffer, Click here to download the coder module