If you don't make sure your source code is formatted correctly, the automatic tests on the Gerrit review server will fail, after you upload your patch.
If that happens to you, you can fix this by running the following script. It will apply a fix to all php files in your last commit.
After that you will need to do the following:
git commit -a --amend
Linux and MacOS¶
This will show necessary modifications. To apply the modifications, run it without the dryrun parameter: