should I switch to php 7.2?

I am using php 5.6 but I am having trouble building a specific Docker image with it. If I switch of the php 7.2, can I expect everything else in my app to break?

CI 3.1.11 works with PHP 7.3. You code could not work, because of deprecated feature. Check the docs and test it

- https://www.php.net/manual/en/migration70.php
- https://www.php.net/manual/en/migration71.php
- https://www.php.net/manual/en/migration72.php
- https://www.php.net/manual/en/migration73.php
- https://www.php.net/manual/en/migration74.php