[ThePhenix]

That's not the correct order, it should be:

PHP код:

CMD:kick(playerid,params[])
{
    new id, aname[MAX_PLAYER_NAME], name[MAX_PLAYER_NAME], Reason[128], string[128];
    if(pData[playerid][Admin] < 2) return SendClientMessage(playerid, COLOR_WHITE, "[Error]: You are not authorized to use this command.");
//First sscanf
    if(sscanf(params,"us[128]",id, Reason)) return SendClientMessage(playerid,-1,"[Admin]: /kick [ID | Name] [Reason]");
    if(pData[playerid][Admin] < pData[id][Admin]) return SendClientMessage(playerid, COLOR_WHITE, "[Error]: You are not authorized to use this command on a higher level administrator.");
    if(id == playerid) return SendClientMessage(playerid, COLOR_WHITE,"[Error]: You can not perform this command on yourself.");
    else if(id == INVALID_PLAYER_ID) return SendClientMessage(playerid,-1,"[Error]: This player is not connected.");
    {
            GetPlayerName(playerid, aname, sizeof(aname));
            GetPlayerName(id, name, sizeof(name));
            format(string,sizeof (string),"[Admin]: %s(%d) Has kicked player: %s(%d) Reason : %s", aname, playerid, name, id, Reason);
            SendClientMessageToAll(COLOR_WHITE, string);
            Kick(id);
        }
    return 1;
} 


You are declaring a variable called "id" however you were always doing the check for the ID 0 as the variable "id" was not yet set during that check.