[Logic_]

Use it like this, this code is faster, better and optimized.

PHP код:

if(issuerid != INVALID_PLAYER_ID)
{
    switch(bodypart)
    {
        case 0:
        {
            switch(weaponid)
            {
                case WEAPON_KNIFE: GivePlayerHealth(playerid, WEAPON_KNIFE_DAMAGE);
            }
        }
        case 7 .. 8:
    }
} 


PHP код:

GivePlayerHealth(playerid, damage)
{
    new Float:H = GetPlayerHealth(playerid);
    SetPlayerHealth(playerid, H - damage);
    return 1;
}