This snippet is used to enter a desired number of votes into the Helpful database. The votes count as correct(!) votes and can only be recognized in the database by the "_cheating".
ATTENTION: This process is reversible and consumes a lot of power depending on how many posts exist and how many votes are to be created!
Helpful is not designed to create votes just like that. This is more of a "cheating" process and is actually not rated by Helpful.
The votes added in this way are also counted in the statistics. With such a high number of votes (300 in this case), this can break the statistics because the votes are all created for the current time!
Translated with www.DeepL.com/Translator (free version)
Here you can find out how to run PHP in WordPress: https://helpful-plugin.info/documentation/execute-php-code/