[CrazY.]

Spoiler

#include <amxmodx>

public plugin_init()
{
    register_plugin("Test", "1.0", "Unknown");

    register_clcmd("say /menu", "cmdMenu");
}

public cmdMenu(this)
{
    showMenu1(this);
}

showMenu1(this, iPage = 0)
{
    new rgPlayers[32], szPlayerName[32], szPlayerId[3], iPlayersCount, pevPlayer;

    new hMenu = menu_create("Menu 1", "menu1");

    get_players(rgPlayers, iPlayersCount, "ch");

    for (new i = 0; i < iPlayersCount; i++)
    {
        pevPlayer = rgPlayers[i];

        if (pevPlayer == this)
            continue;

        get_user_name(pevPlayer, szPlayerName, charsmax(szPlayerName));
        num_to_str(pevPlayer, szPlayerId, charsmax(szPlayerId));

        menu_additem(hMenu, szPlayerName, szPlayerId);
    }

    if (!menu_items(hMenu))
    {
        client_print(this, print_chat, "No players is in server");
        return;
    }

    menu_display(this, hMenu, iPage);
}

public menu1(this, hMenu, iItem)
{
    if (iItem == MENU_EXIT)
    {
        menu_destroy(hMenu);
        return PLUGIN_HANDLED;
    }

    new bitsAccess, iCallback, szPlayerId[3];

    menu_item_getinfo(hMenu, iItem, bitsAccess, szPlayerId, charsmax(szPlayerId), _, _, iCallback);
    menu_destroy(hMenu);

    new pevPlayer = str_to_num(szPlayerId);

    if (!is_user_connected(pevPlayer))
    {
        showMenu1(this, iItem / 7);
        return PLUGIN_HANDLED;
    }

    showMenu2(this, pevPlayer);
    return PLUGIN_HANDLED;
}

showMenu2(this, pevPlayer)
{
    new szBuffer[64], szPlayerName[32], szPlayerSteamid[32];

    get_user_name(pevPlayer, szPlayerName, charsmax(szPlayerName));
    get_user_authid(pevPlayer, szPlayerSteamid, charsmax(szPlayerSteamid));
    formatex(szBuffer, charsmax(szBuffer), "%s SteamID", szPlayerName);

    new hMenu = menu_create(szBuffer, "menu2");

    menu_addtext(hMenu, szPlayerSteamid);

    menu_display(this, hMenu, 0);

}

public menu2(this, hMenu, iItem)
{
    menu_destroy(hMenu);
    return PLUGIN_HANDLED;
}