Check scrutinizer findings and take more care of casting and typing.

src/DB.php

@@ -1186,13 +1186,13 @@ class DB
      * @param integer $chat_id
      * @param string  $inline_message_id
      *
-     * @return array|bool Array containing TOTAL and CURRENT fields or false on invalid arguments
+     * @return array Array containing TOTAL and CURRENT fields or false on invalid arguments
      * @throws TelegramException
      */
     public static function getTelegramRequestCount($chat_id = null, $inline_message_id = null)
     {
         if (!self::isDbConnected()) {
-            return false;
+            return [];
         }
 
         try {

src/Entities/InputMedia/InputMedia.php

@@ -4,5 +4,20 @@ namespace Longman\TelegramBot\Entities\InputMedia;
 
 interface InputMedia
 {
+    /**
+     * @return string Type of the result.
+     */
+    public function getType();
 
+    /**
+     * @return string File to send.
+     */
+    public function getMedia();
+
+    /**
+     * @param string $media File to send.
+     *
+     * @return string
+     */
+    public function setMedia($media);
 }

src/Entities/Keyboard.php

@@ -54,7 +54,7 @@ class Keyboard extends Entity
     /**
      * Get the proper keyboard button class for this keyboard.
      *
-     * @return KeyboardButton|InlineKeyboardButton
+     * @return string
      */
     public function getKeyboardButtonClass()
     {
@@ -166,7 +166,7 @@ class Keyboard extends Entity
             return $button;
         }
 
-        if (!$this->isInlineKeyboard() || $button_class::couldBe($button)) {
+        if (!$this->isInlineKeyboard() || call_user_func([$button_class, 'couldBe'], $button)) {
             return new $button_class($button);
         }
 

src/Entities/UserProfilePhotos.php

@@ -34,7 +34,7 @@ class UserProfilePhotos extends Entity
      *
      * This method overrides the default getPhotos method and returns a nice array
      *
-     * @return PhotoSize[]
+     * @return PhotoSize[][]
      */
     public function getPhotos()
     {
@@ -42,11 +42,9 @@ class UserProfilePhotos extends Entity
 
         if ($these_photos = $this->getProperty('photos')) {
             foreach ($these_photos as $photos) {
-                $new_photos = [];
-                foreach ($photos as $photo) {
-                    $new_photos[] = new PhotoSize($photo);
-                }
-                $all_photos[] = $new_photos;
+                $all_photos[] = array_map(function ($photo) {
+                    return new PhotoSize($photo);
+                }, $photos);
             }
         }
 

src/Request.php

@@ -377,7 +377,7 @@ class Request
             }
 
             // Reformat data array in multipart way if it contains a resource
-            $has_resource |= (is_resource($item) || $item instanceof Stream);
+            $has_resource = $has_resource || is_resource($item) || $item instanceof Stream;
             $multipart[]  = ['name' => $key, 'contents' => $item];
         }
 
@@ -541,7 +541,7 @@ class Request
 
             return filesize($file_path) > 0;
         } catch (RequestException $e) {
-            return ($e->getResponse()) ? (string) $e->getResponse()->getBody() : '';
+            return false;
         } finally {
             //Logging verbose debug output
             TelegramLog::endDebugLogTempStream('Verbose HTTP File Download Request output:' . PHP_EOL . '%s' . PHP_EOL);
@@ -829,7 +829,7 @@ class Request
             $chat_id           = isset($data['chat_id']) ? $data['chat_id'] : null;
             $inline_message_id = isset($data['inline_message_id']) ? $data['inline_message_id'] : null;
 
-            if (($chat_id || $inline_message_id) && in_array($action, $limited_methods)) {
+            if (($chat_id || $inline_message_id) && in_array($action, $limited_methods, true)) {
                 $timeout = 60;
 
                 while (true) {
@@ -837,18 +837,23 @@ class Request
                         throw new TelegramException('Timed out while waiting for a request spot!');
                     }
 
-                    $requests = DB::getTelegramRequestCount($chat_id, $inline_message_id);
+                    if (!($requests = DB::getTelegramRequestCount($chat_id, $inline_message_id))) {
+                        break;
+                    }
+
+                    // Make sure we're handling integers here.
+                    $requests = array_map('intval', $requests);
 
-                    $chat_per_second   = ($requests['LIMIT_PER_SEC'] == 0); // No more than one message per second inside a particular chat
+                    $chat_per_second   = ($requests['LIMIT_PER_SEC'] === 0);    // No more than one message per second inside a particular chat
                     $global_per_second = ($requests['LIMIT_PER_SEC_ALL'] < 30); // No more than 30 messages per second to different chats
-                    $groups_per_minute = (((is_numeric($chat_id) && $chat_id > 0) || !is_null($inline_message_id)) || ((!is_numeric($chat_id) || $chat_id < 0) && $requests['LIMIT_PER_MINUTE'] < 20));    // No more than 20 messages per minute in groups and channels
+                    $groups_per_minute = (((is_numeric($chat_id) && $chat_id > 0) || $inline_message_id !== null) || ((!is_numeric($chat_id) || $chat_id < 0) && $requests['LIMIT_PER_MINUTE'] < 20));    // No more than 20 messages per minute in groups and channels
 
                     if ($chat_per_second && $global_per_second && $groups_per_minute) {
                         break;
                     }
 
                     $timeout--;
-                    usleep(self::$limiter_interval * 1000000);
+                    usleep((int) (self::$limiter_interval * 1000000));
                 }
 
                 DB::insertTelegramRequest($action, $data);

src/Telegram.php

@@ -344,9 +344,8 @@ class Telegram
         if ($custom_input = $this->getCustomInput()) {
             $response = new ServerResponse(json_decode($custom_input, true), $this->bot_username);
         } else {
-            if (DB::isDbConnected()) {
+            if (DB::isDbConnected() && $last_update = DB::selectTelegramUpdate(1)) {
                 //Get last update id from the database
-                $last_update = DB::selectTelegramUpdate(1);
                 $last_update = reset($last_update);
 
                 $this->last_update_id = isset($last_update['id']) ? $last_update['id'] : null;

src/TelegramLog.php

@@ -147,7 +147,9 @@ class TelegramLog
             if (!self::isDebugLogActive()) {
                 return false;
             }
-            self::$debug_log_temp_stream_handle = fopen('php://temp', 'w+b');
+            if ($temp_stream_handle = fopen('php://temp', 'wb+')) {
+                self::$debug_log_temp_stream_handle = $temp_stream_handle;
+            }
         }
 
         return self::$debug_log_temp_stream_handle;