How do I make it so a post can only be reported once? If another user tries to report the same post, it will give them an error like "Error: Post has already been reported" or something.
I think you need a plugin to do this.
Are you sure? I don't think so.
No by core, you need a plugin to do this.
You can request a plugin in the
Plugins Requests forum, or ask for help in the
Plugins Development forum if you choose to write your own plugin.
I've made this for you. I'll release it tomorrow as it's getting quite late & I need to write the documentation.
I also need this, I've been looking for this for a while. Good job Vernier, your an awesome coder.