user_guide_src/source/installation/upgrade_473.rst
############################# Upgrading from 4.7.2 to 4.7.3 #############################
Please refer to the upgrade instructions corresponding to your installation method.
Composer Installation App Starter Upgrading <app-starter-upgrading>Composer Installation Adding CodeIgniter4 to an Existing Project Upgrading <adding-codeigniter4-upgrading>Manual Installation Upgrading <installing-manual-upgrading>.. contents:: :local: :depth: 2
Mandatory File Changes
If you are using Worker Mode, you must update public/frankenphp-worker.php after upgrading. The easiest way is to re-run the install command:
.. code-block:: console
php spark worker:install --force
Breaking Changes
The ext_in file upload validation rule now checks the client filename
extension and verifies that the detected MIME type is associated with that
extension. Previously, ext_in only checked the MIME-derived guessed
extension.
This means files with no client filename extension, or files whose client
filename extension does not match the detected MIME type, now fail ext_in
validation. If your application intentionally accepts such files, remove
ext_in from those validation rules and use a custom validation rule that
matches your application's requirements.
Project Files
Some files in the project space (root, app, public, writable) received updates. Due to these files being outside of the system scope they will not be changed without your intervention.
.. note:: There are some third-party CodeIgniter modules available to assist
with merging changes to the project space:
Explore on Packagist <https://packagist.org/explore/?query=codeigniter4%20updates>_.
The following files received significant changes (including deprecations or visual adjustments) and it is recommended that you merge the updated versions with your application:
This is a list of all files in the project space that received changes; many will be simple comments or formatting that have no effect on the runtime: