[Dayrion]

Alright, foreach doesn't work anymore. Woa.
The code doesn't perform. He is like ignored.
EDIT:
Alriiiight! I changed the foreach include and the function!
Final version:

PHP код:

CMD:respawncall(playerid, params[])
{
    if(pAccount[playerid][pAdmin] < ADMIN) return ErrorMsg(playerid, _, false);
    new time;
    if(sscanf(params, "I(20)", time)) return SCM(playerid, LBLUE, "/respawncall [temps avant respawn]");
    if(RespawnAllVehicle != -1)
    {
        ServeurAnnonce(_, "Le respawn des vйhicules a йtй annulй par un administrateur.");
        SendMessageToAdmins(ARED, "%s a annulй le respawn des vйhicules", GetName(playerid));
        KillTimer(RespawnAllVehicle);
        RespawnAllVehicle = -1;
        return 1;
    }
    RespawnAllVehicle = SetTimerEx("AllVehicleRespawn", 5000, false, "i", time);
    AdminMessage(playerid, "Vous avez dйmarrй le respawn de tous les vйhicules.");
    SendMessageToAdmins(ARED, "%s a dйmarrй le respawn de tous les vйhicules.", GetName(playerid));
    ServeurAnnonce(_, "%i secondes avant le respawn de tous les vйhicules.", time);
    return 1;
}
PUBLIC:AllVehicleRespawn(interval)
{
    if((interval -= 5) > 0)
    {
        ServeurAnnonce(_, "%i secondes avant le respawn de tous les vйhicules.", interval);
        RespawnAllVehicle = SetTimerEx("AllVehicleRespawn", 5000, false, "i", interval);
        return 1;
    }
    KillTimer(RespawnAllVehicle);
    RespawnAllVehicle = -1;
    ServeurAnnonce(_, "Tous les vйhicules ont йtй respawn par un administrateur.");
    RespawnVehicles();
    return 1;
}
RespawnVehicles()
{
    new bool: occupied_vehicle[MAX_VEHICLES char], vehicleid;
    foreach(new i : Player)
    {
        if ((vehicleid = GetPlayerVehicleID(i)) != 0)
        {
            occupied_vehicle{vehicleid} = true;
            occupied_vehicle{GetVehicleTrailer(vehicleid)} = true;
        }
    }
    foreach(new v : Vehicle)
    {
        if (!occupied_vehicle{v}) SetVehicleToRespawn(v);
    }
} 


Thanks a lot Konstantinos for your help and precious code!
I was wondering if I can use char for every array which can be divided by 4 ? Why nobody use this instead of normal array? This is optimization but it's interesting!