API reference

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• Drupal 10.3
• Drupal 4.6
• Drupal 4.7
• Drupal 5(active tab)
• Drupal 6
• Drupal 7
• Drupal 8.9
• Drupal 9.5

Welcome to the Drupal developer's documentation. Newcomers to Drupal development should read the conceptual information provided in the "Components of Drupal" section.

• Components of Drupal
  • Module system (Drupal hooks)
  • Database abstraction layer
  • Menu system
  • Form generation
  • File upload system
  • Search system
  • Node access system
  • Theme system
• In-depth discussions
  • Forms API Quickstart Guide
  • Forms API Reference
  • Drupal Programming from an Object-Oriented Perspective