Как написать правильно функцию editMessageText в Telegram на PHP?

Как написать правильно функцию editMessageText в Telegram на PHP? Не работает код, подскажите пожалуйста, что не правильно? Задача - при нажатии на кнопку info, изменить текст без отправки нового сообщения.

 <?php
include("config/parameters.php");
include("functions/base.php");
include("config/products.php");
include("functions/mysql.php");

if (($json = valid()) == false) {  echo get($url.'setWebhook?url='.$webhook); exit(); }

$file_get = $_SERVER["DOCUMENT_ROOT"] . "/modules/log/get.log";
$file_post = $_SERVER["DOCUMENT_ROOT"] . "/modules/log/post.log";

if (!empty($_GET)) {
    $fw = fopen($file_get, "a");
    fwrite($fw, "GET " . var_export($_GET, true));
    fclose($fw);
}

if (!empty($_POST)) {
    $fw = fopen($file_post, "a");
    fwrite($fw, "POST " . var_export($_POST, true));
    fclose($fw);
}

$uid = $json['message']['from']['id'];
$first_name =  $json['message']['from']['first_name'];
$username = $json['message']['from']['username'];
$text = $json['message']['text'];
$msgid = $json['message']['message_id'];
$date = $json['message']["date"];

 $ANSWER1 = "Инфо";
// Сохраняем пользователя.
if ($uid!=null) {
    addUser($uid,$username,$first_name);

    }



if ($json['callback_query']){
    $callback_data = $json['callback_query']['data'];
    $uid = $json['callback_query']['message']['chat']['id'];
    $msgid = $json['callback_query']['message']['message_id'];
    $uid1 = $json['callback_query']['message']['chat']['id'];
    $imsgid = $json['callback_query']['message']['inline_message_id'];
    }

if ($uid!=null) {
    addUser($uid,$username,$first_name);

    }



// Ответ по умолчанию
$ANSWER = "Неизвестная команда"; $keyboard = null;

// Обработка команд
switch($text){
  case "/start":
      $ANSWER = "g \n\nСклад";
      $keyboard = inline_main();
  break;

  case "/id":
      $ANSWER = $uid;
  break;
}
switch($callback_data){
case '/start':
    $ANSWER = " Gang \nСклад";
    $keyboard = inline_main();
    break;
case '/sklad':
  $ANSWER = "Складчины";
  $keyboard = inline_sklad();
    break;
case '/shop':
    $ANSWER = "Магазин";
    $keyboard = inline_shop();
    break;
case '/kabinet':
    $ANSWER = "Кабинет";
    $keyboard = inline_kabinet();
    break;
    'case '/info':
       editMessageText($uid,$imsgid,"yes you can");
        break;
}'
if ($callback_data != '/info'){sendMessage($uid,$ANSWER,$keyboard);}
function valid() {
    $request_from_telegram = false;
    if(isset($_POST)) {
        $data = file_get_contents("php://input");
        if (json_decode($data) != null)
            $request_from_telegram = json_decode($data,1);
    }
    return $request_from_telegram;
}
function sendMessage($chat_id,$text,$markup=null)
{
    return get($GLOBALS['url'].'sendMessage?chat_id='.$chat_id.'&text='.urlencode($text).'&reply_markup='.$markup.'&parse_mode=Markdown');
}
'function editMessageText($chat_id,$text,$imsgid)
{
    return get($GLOBALS['url'].'editMessageText?chat_id='.$chat_id.'inline_message_id='.$imsgid.'&text='.urlencode($text).'&parse_mode=Markdown');'

}
function get($url)
{
    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    $data = curl_exec($ch);
    curl_close($ch);
    return $data;
}
'function inline_main() {
    $inline_button1 = array("text"=>"Складчины","callback_data"=>'/sklad');
    $inline_button2 = array("text"=>"Магазин","callback_data"=>'/shop');
    $inline_button3 = array("text"=>"Кабинет","callback_data"=>'/kabinet');
    $inline_button4 = array("text"=>"Инфо","callback_data"=>'/info');
    $inline_keyboard = [
    [$inline_button1],
    [$inline_button2],
    [$inline_button3],
    [$inline_button4]
    ];
    $keyboard=json_encode(array("inline_keyboard"=>$inline_keyboard));
    return $keyboard;'
}
function inline_sklad() {
    $inline_button1 = array("text"=>"Товар1","callback_data"=>'/sklad');
    $inline_button2 = array("text"=>"Товар 2","callback_data"=>'/shop');
    $inline_button3 = array("text"=>"Товар 3","callback_data"=>'/kabinet');
    $inline_button4 = array("text"=>"Назад","callback_data"=>'/start');
    $inline_keyboard = [
    [$inline_button1],
    [$inline_button2],
    [$inline_button3],
    [$inline_button4]
    ];
    $keyboard=json_encode(array("inline_keyboard"=>$inline_keyboard));
    return $keyboard;
}
function inline_kabinet() {
    $inline_button1 = array("text"=>"Мои покупки","callback_data"=>'/sklad');
    $inline_button2 = array("text"=>"Назад","callback_data"=>'/start');
    $inline_keyboard = [
    [$inline_button1],
    [$inline_button2]
    ]; 
    $keyboard=json_encode(array("inline_keyboard"=>$inline_keyboard));
    return $keyboard;
}
'function inline_info() {
    $inline_button1 = array("text"=>"Еще инфа","callback_data"=>'/sklad');
    $inline_button2 = array("text"=>"Назад","callback_data"=>'/start');
    $inline_keyboard = [
    [$inline_button1],
    [$inline_button2]
    ];    
    $keyboard=json_encode(array("inline_keyboard"=>$inline_keyboard));
    return $keyboard;
}'
?>