J N Quinlan

There are plenty of ways to upvote/downvote and the plenty of ways to sort the table. But doing them both at the same time isn't something a plugin can do.
 
Take a look here: https://wordpress.org/support/topic/sorting-by-upvotes/
 
But if you want dynamic sorting (where it changes while you are looking at the site) then you need a script to do the ordering.

Might be worth looking at Jekyll if you didn't want to use WordPress, this way you can create a static site with a fairly easy to maintain blog as well.
 
 
I think what is meant here is when developing you can pass the $_POST data to var_dump() which will show you on screen what data is being posted back.
 
var_dump() is an amazing function and has helped me no end when debugging.

I think he needs you to bring developer skills to the table and write PHP code etc..