Modify a php file which generate a JSON feed

If anyone knows what is doing, this is a simple task and it should not take long to complete. We need to modify a php script (the one attached) that generate JSON feed (from a Joomla component) The component generates at the moment JSON from ZOO articles and RS Events Pro, and we just need to add in the feed a few more fields. This is an example of what blog feed look like: [login to view URL]:blog-feed&format=json This is an example of what events feed look like: [login to view URL]:events&format=json In the events feed we just need to add event ID to the feed In the blog feed we need to add: Item ID, Comments Content , Author, Created Date (we will point to the exact database tables and fields ) So the feed should look like: { “Item_id” : “150”, "title":"Halloween Zombie 2K jog at Ealing Broadway Centre!", "link":"[login to view URL]", "pubDate":"Thu, 23 Oct 2014 16:56:43 +0000", "image":"[login to view URL]", "description": "Halloween Zombie 2K jog at Ealing Broadway Centre!<p>Come and raise money for the Log Cabin on Thursday 30th November at Ealing Broadway Shopping Centre. They have joined forces with Ealing HalfMarathon 2015 to organise a 2K jog through the Centre. Joggers will be chased by scary zombies and scared out of their wits” Comments [ {“comment” : “nice article”, “Author” : “Username”, “Posted” : “25.04.2015”}, , {“comment” : “another comment”, “Author” : “Username-2”, “Posted” : “22.04.2015”}]} I hope the Json structure is correct. :) The files that need to be modified are attached.