How do I detect if any player says something?

I have looked at the roblox code wiki and it does not work and I tried google but I only detects me, does anyone have any scripting that can help?

Basically, to do this you have to check for the player chatted event which happens when a player chats which means you have to have a player variable for this to work.

game.Players.PlayerAdded:Connect(function(player)
	player.Chatted:Connect(function(msg)
		if msg == "Foo" then
			--do something
		end
	end)
end)