I have an application that is based on SugarCRM CE. The official advise is to use only php5.3 versions. Now that both the community edition of SugarCRM and the support for php5.3 ended I wonder what I can do to verify that everything still works as expected.
On a testing system with php 5.5.10 I have a running installation of the last sugar version 6.5.17. There are some notices in the webservers (nginx) error.log but as it seems nothing serious just notices.
What else should I do to ensure no hidden problems?