I have a problem here, I know it can be simple, but I have not solved it yet.
I have a slide running in a loop of PHP, in this slide there are "entities" that when the expiration day arrives they should be removed from slides , only the slides , ie they would not be displayed anymore.
I have tried unset() but it removes all the products, since everyone has to come from the same query .
As you do not give much detail in your question I will try to guess.
On a slide you have products that can only be on this slide until dd / mm / yyyy, right?
Make this selection soon in mysql:
SELECT * FROM produtos WHERE data_ativa > CURDATE();
So you only select products that are active until TODAY - curdate () - Tomorrow will no longer be on the slide.
If my answer does not help with anything, please detail your question further.