How to buy someone else's PHP code?

Question

PHP

Hey! I am planning to purchase a telecommunications service. Code in PHP + JS. Tell me what to look for when buying. The owner said that there are comments in the code that he wrote for orientation. Does it make sense to hire a PHP programmer to evaluate the code?

Answer 1

Buy not code, buy solution support.

Answer 2

It makes sense to hire a programmer to evaluate the code because you need to know how difficult it will be to maintain the code in the future if the seller goes missing.
It may happen that when you want to add new functionality, they will tell you that it is easier to write everything in a new way or they will break the price. This is, of course, only in severe cases.