From the looks of it you may need a tranny rebuild. No movement at all when you step on the gas in any gear? Before this happened did you notice any slipping from the tranny, you step on the gas it revs but it's slow to react in actual acceleration. It's a 1994 so your tranny is 12 years already and with the traffic and heat in the Philippines it may have just died. But usually wear and tear doesn't cause you to lose all the gears, reverse is usually the first to go. Did you disconnect the batteries already and reconnect after 5-10 minutes to see if it will reset the electronics? What's the mileage on the truck?

If it's really dead you can buy tranny rebuild kits and just have a tranny shop fix it for you. Don't know the cost to do that for a Toyota, the one I killed was a BMW and it was less than 10 years old when the tranny died, but it cost me about $700 in 1996/7 probably alot cheaper in the Philippines though.