Introduce an alternative to the serializer

bootstrap.php

@@ -1,21 +1,9 @@
 <?php
 
-use Doctrine\Common\Annotations\AnnotationRegistry;
-use JMS\Serializer\Annotation\Type;
-use JMS\Serializer\SerializerBuilder;
-
-$loader = require_once __DIR__ . '/vendor/autoload.php';
-AnnotationRegistry::registerLoader(array($loader, "loadClass"));
-
-$serializer = SerializerBuilder::create()
-  ->build();
-
 final class Car
 {
-  /** @Type("string") */
   private $model;
 
-  /** @Type("string") */
   private $brand;
 
   public function __construct($brand, $model)
@@ -28,4 +16,29 @@ public function __toString()
   {
     return $this->brand . ' ' . $this->model;
   }
+
+  public function toJson()
+  {
+    return json_encode(get_object_vars($this));
+  }
+
+  public function toXml()
+  {
+    return <<<XML
+  <result>
+    <model><![CDATA[$this->model]]></model>
+    <brand><![CDATA[$this->brand]]></brand>
+  </result>
+ XML;
+  }
+
+  public static function fromArray(array $data): self
+  {
+    if (!isset($data['brand']) || !isset($data['model'])) {
+      $message = "Missing data. Could not instantiate a Car object";
+      throw new InvalidArgumentException($message);
+    }
+
+    return new self($data['brand'], $data['model']);
+  }
 }

composer.json

@@ -1,6 +1,7 @@
 {
     "require": {
-        "jms/serializer": "^3.4"
+        "jms/serializer": "^3.4",
+        "ext-json": "*"
     },
     "config": {
         "platform": {

index.php

@@ -3,18 +3,19 @@
 require_once __DIR__ . '/bootstrap.php';
 
 //Serialize
-$opelAstra = new Car('Opel', 'Astra');
-$jsonData = $serializer->serialize($opelAstra, 'json');
-$xmlData = $serializer->serialize($opelAstra, 'xml');
+$car = new Car('Opel', 'Astra');
 
 //Schrijf het resultaat naar een file
-file_put_contents("xmldata.xml", $xmlData);
-file_put_contents("jsondata.json", $jsonData);
+file_put_contents("xmldata.xml", $car->toXml());
+file_put_contents("jsondata.json", $car->toJson());
 
 // Deserialize
-$objectOne = $serializer->deserialize(file_get_contents('jsondata.json'), Car::class,'json');
-$objectTwo = $serializer->deserialize(file_get_contents('xmldata.xml'), Car::class,'xml');
+// Lees de bestande uit en creeer een object
+// Eerst van uit het json bestand
+$jsonData = file_get_contents('jsondata.json');
+echo Car::fromArray((array) json_decode($jsonData));
 
-echo $objectOne;
 echo PHP_EOL;
-echo $objectTwo;
+//Daarna van uit het xml bestand
+$xmlData = file_get_contents('xmldata.xml');
+echo Car::fromArray((array) simplexml_load_string($xmlData));