Data storage-php and database storage problems

Data storage mysqlphp

Now I am encountering a PHP and database problem. I would like to ask for advice.
I use the name of the form to pass the value.

What is presented is this page

Now I click Apply and I need to change that line The data is stored in the database.
The problem is that no matter which application I click, the last row of data is saved in the database.
It may be a logical problem with the array. Is there any way to solve it?