Help using json_encode to produce specific format

[sasc]

i want to use php's json_encode function to take data and produce the following format, but am struggling with it.Can anyone advise if this can be done via json_encode()? Thanks for any help!\[code\] data: [{ x: 3, y: 0 }, { x: 10, y: 0 }] }, { data: [{ x: 11, y: 0 }, { x: 13, y: 0 }] }, { data: [{ x: 12, y: 1}, { x: 17, y: 1}]}\[/code\]