diff --git a/src/Symfony/Component/Serializer/Serializer.php b/src/Symfony/Component/Serializer/Serializer.php
index 8e92abe29cdcf..470e9ed0010af 100644
--- a/src/Symfony/Component/Serializer/Serializer.php
+++ b/src/Symfony/Component/Serializer/Serializer.php
@@ -20,6 +20,7 @@
use Symfony\Component\Serializer\Exception\LogicException;
use Symfony\Component\Serializer\Exception\NotEncodableValueException;
use Symfony\Component\Serializer\Exception\NotNormalizableValueException;
+use Symfony\Component\Serializer\Normalizer\AbstractObjectNormalizer;
use Symfony\Component\Serializer\Normalizer\CacheableSupportsMethodInterface;
use Symfony\Component\Serializer\Normalizer\ContextAwareDenormalizerInterface;
use Symfony\Component\Serializer\Normalizer\ContextAwareNormalizerInterface;
@@ -157,7 +158,7 @@ public function normalize($data, $format = null, array $context = [])
}
if (\is_array($data) || $data instanceof \Traversable) {
- if ($data instanceof \Countable && 0 === $data->count()) {
+ if (($context[AbstractObjectNormalizer::PRESERVE_EMPTY_OBJECTS] ?? false) === true && $data instanceof \Countable && 0 === $data->count()) {
return $data;
}
diff --git a/src/Symfony/Component/Serializer/Tests/SerializerTest.php b/src/Symfony/Component/Serializer/Tests/SerializerTest.php
index fe8f8de929692..dce864abfcf47 100644
--- a/src/Symfony/Component/Serializer/Tests/SerializerTest.php
+++ b/src/Symfony/Component/Serializer/Tests/SerializerTest.php
@@ -491,6 +491,27 @@ public function testNotNormalizableValueExceptionMessageForAResource()
(new Serializer())->normalize(tmpfile());
}
+ public function testNormalizeTransformEmptyArrayObjectToArray()
+ {
+ $serializer = new Serializer(
+ [
+ new PropertyNormalizer(),
+ new ObjectNormalizer(),
+ new ArrayDenormalizer(),
+ ],
+ [
+ 'json' => new JsonEncoder(),
+ ]
+ );
+
+ $object = [];
+ $object['foo'] = new \ArrayObject();
+ $object['bar'] = new \ArrayObject(['notempty']);
+ $object['baz'] = new \ArrayObject(['nested' => new \ArrayObject()]);
+
+ $this->assertSame('{"foo":[],"bar":["notempty"],"baz":{"nested":[]}}', $serializer->serialize($object, 'json'));
+ }
+
public function testNormalizePreserveEmptyArrayObject()
{
$serializer = new Serializer(
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