[Jelly23]

PHP код:

//RPCs
#define RPC_ServerJoin (137)
#define RPC_ServerQuit (138)
ShowPlayerOnScoreBoard(playerid, toplayerid, bool:show)
{
    if(!IsPlayerConnected(playerid) || !IsPlayerConnected(toplayerid)) return 0;
    
    new BitStream:bs = BS_New(), name[MAX_PLAYER_NAME];
    
    BS_WriteValue(
        bs,
        PR_UINT16, playerid,
        PR_UINT8, 1
    );
    BS_RPC(bs, toplayerid, RPC_ServerQuit);
    BS_Reset(bs);
    
    GetPlayerName(playerid, name, sizeof(name));
    
    BS_WriteValue(
        bs,
        PR_UINT16, playerid,
        PR_INT32, 0,
        PR_UINT8, !show,
        PR_UINT8, strlen(name),
        PR_STRING, name
    );
    
    BS_RPC(bs, toplayerid, RPC_ServerJoin);
    BS_Delete(bs);
    return 1;
} 


Function snippet. This will show/hide a player from score-board (In-Game) by adding them back as a NPC for 'toplayerid'.

Take into account that hidden players will have their name tags removed for 'toplayerid', that is because they are added back as NPCs. Other than that, everything works fine.