[Bacardi]

PHP Code:

public OnPluginStart()
{
    HookUserMessage(GetUserMessageId("VGUIMenu"), VGUIMenu, true);
}

public Action:VGUIMenu(UserMsg:msg_id, Handle:bf, const players[], playersNum, bool:reliable, bool:init)
{
    if(!reliable)
    {
        return Plugin_Continue;
    }

    new String:buffer[10];
    BfReadString(bf, buffer, sizeof(buffer));

    if(StrContains(buffer, "class_") == 0 && !IsFakeClient(players[0]))
    {
        FakeClientCommandEx(players[0], "joinclass 0");
        return Plugin_Handled;
    }
    return Plugin_Continue;
}