I have been working on a web application using PHP and MySQL, and I've come across a little challenge that I need your help with. In my database, I have a table with multiple columns, and I want to restrict the modification of one specific column to only be allowed once.
Let me explain in more detail. I have a "status" column in my table that represents the status of a certain item. Initially, when an item is created, the status is set to "pending". However, once it is updated to any other value, let's say "approved", I want to make sure that it cannot be changed anymore.
So, my question is: How can I implement this restriction using PHP and MySQL? Is there a way to set up a column variable to be changed only once and then locked? I want to prevent any further modifications to that column once it has been updated to a specific value.
I appreciate any help or suggestions you can provide. Thank you in advance!