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See Release Notes
Long Term Support Release

  • Bug fixes for general core bugs in 3.9.x will end* 10 May 2021 (12 months).
  • Bug fixes for security issues in 3.9.x will end* 8 May 2023 (36 months).
  • PHP version: minimum PHP 7.2.0 Note: minimum PHP version has increased since Moodle 3.8. PHP 7.3.x and 7.4.x are supported too.

Differences Between: [Versions 39 and 400] [Versions 39 and 401] [Versions 39 and 402] [Versions 39 and 403]

   1  <?php
   2  
   3  declare(strict_types=1);
   4  
   5  namespace Phpml;
   6  
   7  interface Transformer
   8  {
   9      /**
  10       * most transformers don't require targets to train so null allow to use fit method without setting targets
  11       */
  12      public function fit(array $samples, ?array $targets = null): void;
  13  
  14      public function transform(array &$samples): void;
  15  }