Windows:

Download the portable Zip of the current version (at the time of this writing: 7.1.7)

https://sourceforge.net/projects/xampp/files/XAMPP%20Windows/

Extract the 'xampp' folder suggesting to use C:/ as the target folder.

Remove the Semicolon infront of the line

;extension=php_sockets.dll

inside of xampp/php/php.ini

Linux:

Download the installer of the current version (at the time of this writing: 7.1.7)

https://sourceforge.net/projects/xampp/files/XAMPP%20Linux/

And run it.

Folder link setup

Add an entry to xampp/apache/conf/extra/httpd-xampp.conf

(On Linux this should be /opt/lampp/apache/conf/extra/httpd-xampp.conf)

...
<IfModule alias_module>    
    ...

    Alias /bahn "<PATH TO YOUR GIT>/code/website"
    <Directory "<PATH TO YOUR GIT>/code/website">
        AllowOverride AuthConfig
        Require local
        ErrorDocument 403 /error/XAMPP_FORBIDDEN.html.var
    </Directory>
</IfModule>

Accessing the Website

After the setup you can run xampp-control inside the xampp folder and start apache or directly run 'apache_start' inside this folder.

Now you can open http://localhost/bahn/