Seems like an odd request but I'm wondering if it's possible to alter values in nginx just by specifying several of its values. I've proxied my business website through nginx so I can have different web addresses for each region I'm based in.
For example my website has multiple different mobile numbers all starting with 075. My main website shows the mobile numbers available for that region. However when accessed through my nginx proxy I want to alter them all to a different single mobile number.
Is it possible to use the sub_filter command just by specifying the first 3 digits and telling it to include 8 digits after it?