[amirab]

you can use this one:

PHP код:

public OnPlayerUpdate(playerid)
{
    new iCurWeap = GetPlayerWeapon(playerid);    
    if(iCurWeap != GetPVarInt(playerid, "iCurrentWeapon")) 
    {
        OnPlayerChangeWeapon(playerid, GetPVarInt(playerid, "iCurrentWeapon"), iCurWeap);
        SetPVarInt(playerid, "iCurrentWeapon", iCurWeap);
    }
    return 1; 
}
 
stock OnPlayerChangeWeapon(playerid, oldweapon, newweapon)
{
        SetPlayerAmmo(playerid, newweapon, -1);
        SendClientMessage(playerid, 0xFFFFFFFF, "You Can't Chagne Your Weapon!");
}