fix the breaking issue in php8 and some of the warnings (#1150)

src/Classes/MyRadio/MyRadioSession.php

@@ -27,12 +27,12 @@ public function __construct()
         $this->db = Database::getInstance();
     }
 
-    public function open($save_path, $sesion_name)
+    public function open($save_path, $sesion_name): bool
     {
         return true;
     }
 
-    public function close()
+    public function close(): bool
     {
         return true;
     }
@@ -41,7 +41,7 @@ public function close()
      * Clear up old session entries in the database
      * This should be called automatically by PHP every one in a while.
      */
-    public function gc($lifetime)
+    public function gc($lifetime): int|false
     {
         $this->db->query(
             'DELETE FROM sso_session WHERE timestamp<$1',
@@ -55,7 +55,7 @@ public function gc($lifetime)
      * Reads the session data from the database. If no data exists, creates an
      * empty row.
      */
-    public function read($id)
+    public function read($id): string|false
     {
         if (empty($id)) {
             return false;
@@ -87,7 +87,7 @@ public function read($id)
     /**
      * Writes changes to the session data to the database.
      */
-    public function write($id, $data)
+    public function write($id, $data): bool
     {
         if (empty($id)) {
             return false;
@@ -107,7 +107,7 @@ public function write($id, $data)
     /**
      * Deletes the session entry from the database.
      */
-    public function destroy($id)
+    public function destroy($id): bool
     {
         if (empty($id)) {
             return false;

src/Classes/ServiceAPI/MyRadio_Banner.php

@@ -276,7 +276,7 @@ public function setPhoto(MyRadio_Photo $photo)
      *
      * @throws MyRadioException
      */
-    public static function create(MyRadio_Photo $photo, $alt = 'Unnamed Banner', $target = null, $type = 2)
+    public static function create($photo, $alt = 'Unnamed Banner', $target = null, $type = 2)
     {
         $result = self::$db->fetchColumn(
             'INSERT INTO website.banner (alt, image, target, banner_type_id, photoid)

src/Classes/ServiceAPI/MyRadio_UserTrainingStatus.php

@@ -85,7 +85,7 @@ protected function __construct($statusid)
         $this->user = (int) $result['memberid'];
         $this->awarded_time = strtotime($result['completeddate']);
         $this->awarded_by = (int) $result['confirmedby'];
-        $this->revoked_time = strtotime($result['revokedtime']);
+        $this->revoked_time = $result['revokedtime'] ? strtotime($result['revokedtime']) : null;
         $this->revoked_by = (int) $result['revokedby'];
 
         parent::__construct($result['presenterstatusid']);