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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.
/question/engine/upgrade/
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Foldertests/
 
Filebehaviourconverters.php [source] [561 lines]   This file contains classes for handling the different question behaviours during upgrade.
Filelogger.php              [source] [95 lines]    Code that deals with logging stuff during the question engine upgrade.
Fileupgradelib.php          [source] [479 lines]   This file contains the code required to upgrade all the attempt data from old versions of Moodle into the tables used by the new question engine.