Is there exists workspaces like in NuSphere phped (saved opened files) inside one project in PhpStorm?
Maybe any plugin exists? I need opened files profiles within one project (tabs groups)...
Such functionality is called "Contexts" in PhpStorm and you can switch between them using Tools | Tasks & Contexts | Load Context.
More on this in official Help pages: https://www.jetbrains.com/phpstorm/help/switching-between-contexts.html?search=context
P.S. If you are using VCS in your project and you are using integration with an Issue Tracking System in PhpStorm then IDE will load your tabs that you had open when last time worked on that particular ticket/task.