How to prohibit changing once sent data to the database?

Question

PHP

In the user's control panel, there is one field, he must fill it out once without the possibility to change the value of this field later.
Can you tell me how this can be implemented in sqlite and php?

Answer 1

For example, add the is_editable field to the database and change its value to 0 after the first filling.
On the client side, do not allow the field to be edited if is_editable=0