GTM event stored in PHP variable

I like to store Event value into PHP value. How to do this in the correct way?
“event”: “ipEvent”,
“ipCountry”: “IE”,
“gtm.uniqueEventId”: 6
},

I’m not quite sure what you are asking, but that looks like json data.
You can convert json data to a PHP array or object with json_decode() if that helps.

I know very little about marketing, but if “GTM” is “Google Tag Manager” the Developer Guide page has quite a bit about the data layer eg.
https://developers.google.com/tag-manager/devguide

I think what you want is the Enhanced Ecommerce (UA) page
https://developers.google.com/tag-manager/enhanced-ecommerce

Even if one of the functions is close but not exactly what you’re interested in doing, can you get it to work?