[Dayrion]

Let's take an example :
There is an admin command making you in GODMODE.

PHP код:

CMD:god(playerid,params[])
{
     if(PlayerInfo[playerid][pAdminlvl] >= 4 && PlayerGodMode[playerid] == 1) // If the player has AT LEAST a admin lvl > 4 AND he is NOT in godmode
    {
        PlayerGodMode[playerid] = 2;
        SendClientMessage(playerid, -1, "Godmode on");
        GOD = SetTimerEx("GodMode", 100, true, "i", playerid);
        return 1;
    }
     else if(PlayerInfo[playerid][pAdminlvl] >= 4 && PlayerGodMode[playerid] == 2) // ELSE IF the player has AT LEAST a admin lvl > 4 AND he IS in godmode.
    {
        SendClientMessage(playerid, -1, "Godmode off");
        KillTimer(GOD);
        PlayerGodMode[playerid] = 1;
        SetPlayerHealth(playerid, 100.0);
        SetPlayerArmour(playerid, 100.0);
        return 1;
    }
      else return SendClientMessage(playerid, red, "You are not allowed to use this command."); // ELSE : the player isn't admin
} 


I hope you understand the difference. By the way check THIS.