Which PHP projects can be used for the following purposes?

Question

PHP

Good day!
It is required to raise a full-fledged working environment for developers, consisting of the following elements:

• Git wb server, for example, GitLab
  
• CI server, for example, Jenkins
  
• Issue tracker, e.g. Redmine
  
• Wiki base, for example, Atlassian
  

The difficulties are as follows:
1. The language of the services should (well, or very, very desirable) be one (everything in PHP is ideal)
2. You need to set up integration between services, for example: There is a Git repository, an Issue Tracker is connected to it, the deployment goes CI server (something like Jenkins notifyOnCommit), and the main information about the project is in the Wiki.
3. Everything needs to be done inside the corporate network and .... for free :)
Thank you in advance for the options!

Answer 1

I studied GitLab in more detail, it turns out:
1. Yes
2. Yes
3. Yes
4. Yes
As a result, I choose GitLab :)

Answer 2

Are all items required?
If you remove "free", then the Atlassian product line can do it all.
It's cheap for a tiny company.
As solution:
GitLab
PHPCI
GitLab
GitLab