Added support for PHP 8.2 (#5)

* fix `Call to a member function call() on null`

* fix `Implicit conversion from floatto int loses precision`

* fix `Creation of dynamic property is deprecated`

* Cambio tipo de atributo

Author: AleMercadal

src/AirbrakeTarget.php

@@ -50,7 +50,7 @@ public function export()
             // add additional information available from logger
             $airbrakeNotice['context']['severity'] = Logger::getLevelName($level);
             $airbrakeNotice['context']['category'] = $category;
-            $airbrakeNotice['context']['timestamp'] = date('Y-m-d H:i:s', $timestamp);
+            $airbrakeNotice['context']['timestamp'] = date('Y-m-d H:i:s', intval($timestamp));
 
             if ($airbrakeNotice !== null) {
                 $this->airbrakeService->sendNotice($airbrakeNotice);

src/Notifier.php

@@ -9,6 +9,11 @@ class Notifier extends AirbrakeNotifier
 {
     private $user;
 
+    /**
+     * @var array
+     */
+    protected $errorConfig;
+
     public function __construct($opt)
     {
         parent::__construct($opt);
@@ -25,7 +30,7 @@ public function buildNotice($exc)
             if (isset($user->id)) {
                 $notice['context']['user']['id'] = $user->id;
             }
-            if (isset($user->identity)) {
+            if (isset($user->identity) && isset($this->user)) {
                 $notice['context']['user'] = $this->user->call($this, $user->identity);
             }
         }