How can I update to the latest version of PHP?

[zero942]

Hello, I would like to ask a question, I have an application that I made in 2018 in PHP 7.4.3 and I would like to update its version to the most current one. So I would like to know how I can do it? What changes do I have to make in the code?

 

[Moorcam]

Hello, I would like to ask a question, I have an application that I made in 2018 in PHP 7.4.3 and I would like to update its version to the most current one. So I would like to know how I can do it? What changes do I have to make in the code?

Firstly, you will need to check if your current codebase is compatible with PHP 8. You can use tools like PHPCompatibility to check it.
Other than that, it depends really on what your code is and how much a difference there is between the requirements of 7.4 and 8.1, for example. Without seeing the code it's hard to say.