on placeholderapi request for prefix "skript":
if identifier is "onlinesurvival":
loop all players where [input's world is "survival" or "lobby_nether"]:
set result to (size of all players where [{vanish::%input%} is not true])
if identifier is "onlinefull":
set {_1} to (placeholder "skript_onlinesurvival" from player parsed as number) ? 0
set {_2} to (placeholder "server_online_survival" from player parsed as number) ? 0
set {_3} to (placeholder "server_online_lobby_nether" from player parsed as number) ? 0
set result to {_2} + {_3} - {_1}