【Foreword】
Just prepared to test---turn---wall---operation, need to delete the session data, the official check the document, record it here. However, there are many keywords inexplicably, so I sent a reference link: How to find the save location of the session in php
【Expand】Talk about sensitive words
Now basically all websites need to set up sensitive word filtering, which seems to have become a standard for a website. If your website does not have it, or you have not done the corresponding treatment, then be careful that the relevant department invites you to drink tea.
Regarding the implementation of sensitive word filtering on web sites, make a record here and do research when you have time.