I need install zip extenxion in php7

I need install zip extenxion in php7. I have a ex4100. ¿Can you help me?

Google how to install zip extension for PHP. There are a lot of useful guides from what I see. I won’t steer you towards any particular one as I think you might need to do your research to really understand how to use SSH and how to add extensions to PHP. Some install options might do it automatically while others will require you edit the php.ini manually.

I know how to ssh into the NAS and I also know that dpkg can be used to install packages but it doesn’t work. If I extract the content of the DEB file, I cannot copy the extension in the corresponding folder since it does not allow the module to be extracted. I think the only way would be to compile the firmware source and put the module in the appropriate folder.