In a wok, heat the oil over medium heat & stir-fry the onion & garlic until golden brown. Add the carrots & green beans & stir-fry for 2 minutes longer Add the pineapple, rice, ketchup & salt. Mix well & stir-fry for another 3 minutes. Arrange the cucumber around the serving platter. Pour the rice into the centre. Garnish with green onion & fresh cilantro leaves.