How to load json file in codeigniter... newbie

[eluser]danny_ci[/eluser]
Hi, everyone...
I want to ask something about how to load json file in codeigniter
But before load the json file, i want to pass some data to json file
Any idea for this??

Thanks before

Here is some code to load json file in jquery event calendar

Code:

$("#calendar").eventCalendar({
  eventsjson: 'file.json' //here to load json file
});