To mitigate any unexpected issues between PHP 5 & 7, it is recommended to avoid using list function https://www.php.net/manual/en/function.list.php

Warning! In PHP 5, list() assigns the values starting with the right-most parameter. In PHP 7, list() starts with the left-most parameter.

If you are using plain variables, you don't have to worry about this. But if you are using arrays with indices you usually expect the order of the indices in the array the same you wrote in the list() from left to right, which is not the case in PHP 5, as it's assigned in the reverse order.

Generally speaking, it is advisable to avoid relying on a specific order of operation, as this may change again in the future.