[AmirRFCNR]

PHP код:

public OnPlayerCommandText(playerid, cmdtext[])
{
CMD:kill(playerid, params[])// the cmd is /kill
   {
    SetPlayerHealth(playerid, 0);    // set player health to 0/die
    SendClientMessage(playerid, RED, "You just killed yourself");    // send player message
    return 1;
   }
} 


try this