made some refactoring

resources/view/patterns/observer.php

@@ -0,0 +1,34 @@
+<?php
+
+/**
+ * @package: patterns
+ * @author: Yevhen Odynets
+ * @date: 2025-07-06
+ * @time: 15:35
+ */
+
+declare(strict_types = 1);
+
+use Pattern\Behavioral\Observer\User;
+use Pattern\Behavioral\Observer\UserObserver;
+
+$user = new User();
+
+/** These names will be skipped and not be added to the log of names */
+$user->setName("Just a name");
+$user->setName("Some new name");
+
+$userObserver = new UserObserver();
+$user->attach($userObserver);
+
+$user->setName("Another new name");
+$user->setName("Once again new name");
+$user->setName("Possibly other new name");
+
+/** @noinspection ForgottenDebugOutputInspection */
+dump(
+    getenv('APP_ENV'),
+    ["Another new name", "Once again new name", "Possibly other new name"],
+    $userObserver->getNamesLog(),
+    ["Another new name", "Once again new name", "Possibly other new name"] === $userObserver->getNamesLog()
+);