made some refactoring

resources/view/principles/liskov-substitution.php

@@ -0,0 +1,14 @@
+<?php
+
+/**
+ * @package: patterns
+ * @author: Yevhen Odynets
+ * @date: 2025-07-07
+ * @time: 08:36
+ */
+
+declare(strict_types = 1);
+
+use Pattern\SOLID\LiskovSubstitution\Bird;
+
+$bird = new Bird;

resources/view/principles/open-closed.php

@@ -0,0 +1,23 @@
+<?php
+
+/**
+ * @package: patterns
+ * @author: Yevhen Odynets
+ * @date: 2025-07-07
+ * @time: 05:52
+ */
+
+declare(strict_types = 1);
+
+// Separate extensible behaviour behind an interface, and flip the dependencies
+
+use Pattern\SOLID\OpenClosed\Figures\AreaCalculator;
+use Pattern\SOLID\OpenClosed\Figures\Circle;
+use Pattern\SOLID\OpenClosed\Figures\Square;
+
+$circle = new Circle(3);
+$square = new Square(2, 5);
+$areaCalculator = new AreaCalculator;
+
+/** @noinspection ForgottenDebugOutputInspection */
+dump('Circle(3)', $areaCalculator->calculate([$circle, $square]));

resources/view/principles/solid-single-responsibility.php

@@ -0,0 +1,22 @@
+<?php
+
+/**
+ * @package: patterns
+ * @author: Yevhen Odynets
+ * @date: 2025-07-07
+ * @time: 00:04
+ */
+
+declare(strict_types = 1);
+
+use Carbon\Carbon;
+use Pattern\SOLID\SingleResponsibility\HtmlOutput;
+use Pattern\SOLID\SingleResponsibility\SalesReporter;
+use Pattern\SOLID\SingleResponsibility\SalesRepository;
+
+$now = Carbon::now();
+$report = new SalesReporter(new SalesRepository);
+
+$output = $report->between($now->clone()->subDays(10)->format('Y-m-d'), $now->format('Y-m-d'), new HtmlOutput);
+
+echo($output);