php – 在程序中使用会话

电报信使允许程序员建立自己的Bot.
我的机器人有键盘.用户可以选择每个键和机器人显示正确的响应.
在我的例子中,当用户按“移动”或“/移动”时,机器人回复是新的键盘：“索尼”,“诺基亚”,“Lg”.通过按诺基亚,机器人显示正确的反应
用户也可以直接输入“诺基亚”,机器人可以回复它

我的问题是：
是什么迫使用户选择诺基亚,“只有”按移动后？
换句话说,当用户直接输入诺基亚时,机器人会告诉他：“你需要先选择手机”
????

$data       = json_decode(file_get_contents('php://input'),true);

$client     = new ZeleninTelegramBotApi($token);

$chatid     = $data['message']['chat']['id'];
$text       = $data['message']['text'];
$messageid  = $data['message']['message_id'];


if($text == "/mobile" || "mobile"){ 
        $params     = array('chat_id' => $chatid,'action' => 'typing');
        $response   = $client -> sendChatAction($params);
                //keyboard
        $keyboard = array("sony xF0x9Fx93x9E","nokia xF0x9Fx8ExA5","LG xF0x9Fx92xB0");
        $start_keys = array('keyboard'=>array($keyboard));
        $encodedMarkup = json_encode($start_keys);
        $message = " xF0x9Fx93x8C please press correct key ...";
        $content = array('chat_id' => $chatid,'reply_markup' => $encodedMarkup,'text' => $message);
        $response   = $client -> sendMessage($content);
        $response   = $client -> forwardMessage(array('chat_id' => $agroup,'message_id' => $messageid,'from_chat_id' => $chatid));
} else {
        $params     = array('chat_id' => $chatid,'action' => 'typing');
        $response   = $client -> sendChatAction($params);
        $message = " xF0x9Fx93x8C please press ...";    
        $response   = $client -> sendMessage($content);
}
?>