Is completing two years of your PhD sufficient to satisfy journal reviewing requirement of having a PhD? For reviewing papers, some journals ask you to have a PhD degree.
I want to know, if the PhD degree is the obtained certificate at the end of your PhD, or it could be also be, for example, your third inscription in the PhD (you have previously two succefull years in preparing the degree).
"Having a PhD" means that you completed the entire degree program—including writing, defending, and depositing a dissertation—and were formally awarded a degree by the host university.  Current PhD students would not qualify as reviewers for the journal you describe.