Encourage more usage of PHP Interfaces in DrupalBetter Core. Better Modules. Better Drupal.

Chris Charlton - XTND.US - http://xtnd.us

PHP Interfaces implements

Maps out required functions a Class file implements.

Multiple Interfaces allowed per Class file.

Can be extended using the extends operator.

Prevents errors and misspellings of functions/hooks.

Smart IDE software use Interface files as blueprints.

PHP Interfaces usage example

<?php

/** * Query builder for SELECT statements. */class SelectQuery extends Query implements SelectQueryInterface { // ...}

Interfaces used in over 20 instances of Drupal 7 core

Queries & DB Engine

Queues

File transfers

class Drupal implements IDrupal

Attract OOP-based followers (PHP, Java, etc.).

Represents a level of code maturity (and complexity).

Next-gen Module / Theme Engine development?

Might be too soon for Drupal. D9? D10?