[Denying]

Try this.

pawn Код:

public OnPlayerEnterVehicle(playerid, vehicleid, ispassenger)
{
    //get vehicle id
    new vid;
    vid = GetVehicleModel(vehicleid);
    //check for factions
    for(new i = 0; i <= 7; i++)
    {
        if(vehicleid == LSPDvehicles[i])
        {
            SendClientMessage(playerid, -1, "police car");
        }
    }
    return 1;
}

You are telling it to check LSPDvehicles at the cell number "vid".