I need to edit the existing GA code on our WordPress website with a different code and i intend to do the same by using add header/footer script plugin but i don’t know if that will replace the present code. I tried to find the same on the server to change via FTP (as with our magento site) but was unsuccessful, can anybody update me on the same please?
Google Analytics code in wordpress
You should be able to edit this via the admin itself. If you use as plugin like this https://wordpress.org/plugins/google-analytics-for-wordpress/
Otherwise, to edit GA, is not in the files itself, but within the admin. I would look within your admin, there is a lot of resource out there with wordpress integrations. You should almost never need to look in the code to find this. (that’s the purpose of wordpress). I couldn’t exactly say where yours is, but take a look at all your wordpress plugins/integrations and configurations.