Writing a wordpress plugin to filter comments

I’m completely new to wordpress plugin development. I want to write a plugin to delete comments I don’t want based on a keyword list. Update: WordPress already comes with this feature under Comment Moderation The code The code isn’t complex. It first use the preprocess_comment hook to check the comment content. If it contains hyperlinks, a 404 error will be returned and the comment will not be inserted into database.…

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