array(
	id: 1,
	name: a,
	parent: NULL,
	childrens: array(
		array(
			id: 2,
			name: b,
			parent: 1,
			childrens: array(
				array(
					id: 4,
					name: d,
					parent: 2,
					childrens: NULL
				),
				array(
					id: 5,
					name: e,
					parent: 2,
					childrens: NULL
				)
			)
		)
		array(
			id: 3,
			name: c,
			parent: 1,
			childrens: array(
				array(
					id: 5,
					name: f,
					parent: 3,
					childrens: NULL
				),
				array(
					id: 7,
					name: h,
					parent: 3,
					childrens: NULL
				)
			)
		)
	)
)