How to limit how often a user can update a mysql value to a database

Question

I have a field on my website, which updates a value in my mysql database. I want to make it so the user can only update the value every 3 days. How would I go about doing this?<

Answer 1

According to Pinx0, if you add a new column to your users table which contains the date of the last update, then you can create a condition. For example:

ALTER TABLE `users` 
ADD `lastUpdated` DATE NOT NULL;

Now you can add a condition to your existing query something like this:

UPDATE `users` 
SET `HWID` = '{$UpdateHWID}',
    `lastUpdated` = NOW()
WHERE `UserID` = $User AND 2 < DATEDIFF(CURDATE(),`lastUpdated`);