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

You can easily do that, using the DATEDIFF method.

It will be my first comment. so, Let me know if I have written something incorrectly here.

$currentDate = date('Y-m-d');

$query = "SELECT DATEDIFF($currentDate,*Last_update_date_row_name*) as diff FROM *TABLE_NAME* WHERE user_id=Current_User_Id";

$result = mysqli_query($conn,$query);

if($result!=false){
  //compare the diff with your desire number
  // then you can hide or disable the button or show error
}