Examples for presentation.

sources/Example/VeryGood/Product.php

@@ -0,0 +1,62 @@
+<?php
+
+namespace Example\VeryGood;
+
+class Product
+{
+    public string $sku = '';
+    public int $quantity = 0;
+    public float $price = 0;
+
+    public function setSku(string $sku): Product
+    {
+        $this->sku = $sku;
+        return $this;
+    }
+
+    public function setQuantity(int $quantity): Product
+    {
+        $this->quantity = $quantity;
+        return $this;
+    }
+
+    public function setPrice(float $price): Product
+    {
+        $this->price = $price;
+        return $this;
+    }
+
+    /**
+     * Instead of this better to use some DAO lib like JMSSerializer, or cuyz/valinor.
+     */
+    public function setData(array $data): Product
+    {
+        $this->sku = $data['sku'] ?? '';
+        $this->quantity = $data['amount'] ?? 0;
+        $this->price = $data['price'] ?? 0;
+
+        return $this;
+    }
+
+    public function applyVat(float $vat): Product
+    {
+        $this->price = $this->price * (1 + $vat / 100);
+
+        return $this;
+    }
+
+    public function getSku(): string
+    {
+        return $this->sku;
+    }
+
+    public function getQuantity(): int
+    {
+        return $this->quantity;
+    }
+
+    public function getPrice(): float
+    {
+        return $this->price;
+    }
+}