[maramizo]

pawn Код:

CMD:hidepickups(playerid, params[])
{
    if(!IsPlayerAdmin(playerid)) return SendClientMessage(playerid, 0xFF3300, "You're not a server administrator.");
    for(new p = 0; p < MAX_PICKUPS; p++)
    DestroyPickup(p);
    return 1;
}

Careful though, that will destroy all pickups.

You can also use Foreach to create and hide/un-hide the pickups.