diff --git a/modules/openapi-generator/src/main/resources/php-symfony/composer.mustache b/modules/openapi-generator/src/main/resources/php-symfony/composer.mustache
index 026bd4fb3acb..3a061043642a 100644
--- a/modules/openapi-generator/src/main/resources/php-symfony/composer.mustache
+++ b/modules/openapi-generator/src/main/resources/php-symfony/composer.mustache
@@ -28,6 +28,7 @@
         "ext-curl": "*",
         "ext-json": "*",
         "ext-mbstring": "*",
+        "doctrine/annotations": "^2.0",
         "symfony/validator": "^6.4|^7.0",
         "jms/serializer-bundle": "^5.4",
         "symfony/framework-bundle": "^6.4|^7.0"
diff --git a/modules/openapi-generator/src/main/resources/php-symfony/model_generic.mustache b/modules/openapi-generator/src/main/resources/php-symfony/model_generic.mustache
index 620051725deb..9dba64f5345c 100644
--- a/modules/openapi-generator/src/main/resources/php-symfony/model_generic.mustache
+++ b/modules/openapi-generator/src/main/resources/php-symfony/model_generic.mustache
@@ -30,6 +30,20 @@ class {{classname}} {{#parentSchema}}extends {{{parent}}} {{/parentSchema}}
         return $this->{{name}};
     }
 
+    /**
+    * Sets {{name}}.
+    *
+    * @param {{{vendorExtensions.x-comment-type}}} ${{name}}{{#description}}  {{{.}}}{{/description}}
+    *
+    * @return $this
+    */
+    public function {{setter}}({{#vendorExtensions.x-parameter-type}}{{vendorExtensions.x-parameter-type}} {{/vendorExtensions.x-parameter-type}}${{name}}{{^required}} = null{{/required}}): self
+    {
+        $this->{{name}} = ${{name}};
+
+        return $this;
+    }
+
     {{#isEnumRef}}
     /**
     * Gets {{name}} for serialization.
@@ -40,6 +54,24 @@ class {{classname}} {{#parentSchema}}extends {{{parent}}} {{/parentSchema}}
     {
         return $this->{{name}}?->value ? (string) $this->{{name}}->value : null;
     }
+
+    /**
+    * Sets {{name}}.
+    *
+    * @param string|{{{vendorExtensions.x-comment-type}}} ${{name}}{{#description}}  {{{.}}}{{/description}}
+    *
+    * @return $this
+    */
+    public function setDeserialized{{nameInPascalCase}}(string|{{#vendorExtensions.x-comment-type}}{{vendorExtensions.x-comment-type}} {{/vendorExtensions.x-comment-type}}${{name}}{{^required}} = null{{/required}}): self
+    {
+        if (is_string(${{name}})) {
+            ${{name}} = {{baseType}}::tryFrom(${{name}});
+        }
+
+        $this->{{name}} = ${{name}};
+
+        return $this;
+    }
     {{/isEnumRef}}
 
     {{#isContainer}}
@@ -53,26 +85,36 @@ class {{classname}} {{#parentSchema}}extends {{{parent}}} {{/parentSchema}}
     public function getSerialized{{nameInPascalCase}}(): array
     {
         return array_map(
-            static fn ($value) => (string) $value->value,
-            $this->test ?? []
+            static fn ($value) => $value?->value ? (string) $value->value : null,
+            $this->{{name}} ?? []
         );
     }
-    {{/isEnumRef}}
-    {{/items}}
-    {{/isContainer}}
 
     /**
-     * Sets {{name}}.
-     *
-     * @param {{{vendorExtensions.x-comment-type}}} ${{name}}{{#description}}  {{{.}}}{{/description}}
-     *
-     * @return $this
-     */
-    public function {{setter}}({{#vendorExtensions.x-parameter-type}}{{vendorExtensions.x-parameter-type}} {{/vendorExtensions.x-parameter-type}}${{name}}{{^required}} = null{{/required}}): self
+    * Sets {{name}}.
+    *
+    * @param {{^required}}?{{/required}}array ${{name}}{{#description}}  {{{.}}}{{/description}}
+    *
+    * @return $this
+    */
+    public function setDeserialized{{nameInPascalCase}}({{^required}}?{{/required}}array ${{name}}{{^required}} = []{{/required}}): self
     {
-        $this->{{name}} = ${{name}};
+        $this->{{name}} = array_map(
+            static function ($value) {
+                if (is_string($value)) {
+                    $value = {{baseType}}::tryFrom($value);
+                }
+
+                return $value;
+            },
+            ${{name}} ?? []
+        );
 
         return $this;
     }
+    {{/isEnumRef}}
+    {{/items}}
+    {{/isContainer}}
+
     {{/vars}}
 }
diff --git a/modules/openapi-generator/src/main/resources/php-symfony/model_variables.mustache b/modules/openapi-generator/src/main/resources/php-symfony/model_variables.mustache
index 8e403f458914..f52d6b065af2 100644
--- a/modules/openapi-generator/src/main/resources/php-symfony/model_variables.mustache
+++ b/modules/openapi-generator/src/main/resources/php-symfony/model_variables.mustache
@@ -5,30 +5,7 @@
     {{/description}}
      * @var {{{vendorExtensions.x-comment-type}}}
      * @SerializedName("{{baseName}}")
-{{#required}}
-     * @Assert\NotNull()
-     {{^isPrimitiveType}}
-     * @Assert\Valid()
-     {{/isPrimitiveType}}
-{{/required}}
-{{#isEnum}}
-    {{#isContainer}}
-     * @Assert\All({
-    {{#items}}
-     *   @Assert\Choice({ {{#allowableValues}}{{#enumVars}}{{{value}}}{{^-last}}, {{/-last}}{{/enumVars}}{{/allowableValues}} })
-    {{/items}}
-     * })
-    {{/isContainer}}
-    {{^isContainer}}
-     * @Assert\Choice({ {{#allowableValues}}{{#enumVars}}{{{value}}}{{^-last}}, {{/-last}}{{/enumVars}}{{/allowableValues}} })
-    {{/isContainer}}
-{{/isEnum}}
 {{#isContainer}}
-     * @Assert\All({
-    {{#items}}
-     *   @Assert\Type("{{dataType}}")
-    {{/items}}
-     * })
      {{#isMap}}
      {{#items}}
      * @Type("array<string, {{dataType}}>")
@@ -37,7 +14,7 @@
      {{^isMap}}
      {{#items}}
      {{#isEnumRef}}
-     * @Accessor(getter="getSerialized{{nameInPascalCase}}")
+     * @Accessor(getter="getSerialized{{nameInPascalCase}}", setter="setDeserialized{{nameInPascalCase}}")
      * @Type("array<string>")
      {{/isEnumRef}}
      {{^isEnumRef}}
@@ -48,66 +25,95 @@
 {{/isContainer}}
 {{^isContainer}}
     {{#isDate}}
-     * @Assert\Type("\Date")
      * @Type("DateTime<'Y-m-d'>")
     {{/isDate}}
     {{#isDateTime}}
-     * @Assert\Type("\DateTime"))
      * @Type("DateTime")
     {{/isDateTime}}
     {{#isEnumRef}}
-        * @Accessor(getter="getSerialized{{nameInPascalCase}}")
-        * @Type("string")
+    * @Accessor(getter="getSerialized{{nameInPascalCase}}", setter="setDeserialized{{nameInPascalCase}}")
+    * @Type("string")
     {{/isEnumRef}}
     {{^isDate}}
     {{^isDateTime}}
     {{^isEnumRef}}
-     * @Assert\Type("{{dataType}}")
      * @Type("{{dataType}}")
     {{/isEnumRef}}
     {{/isDateTime}}
     {{/isDate}}
+{{/isContainer}}
+    */
+{{#required}}
+    #[Assert\NotNull]
+    {{^isPrimitiveType}}
+    #[Assert\Valid]
+    {{/isPrimitiveType}}
+{{/required}}
+{{#isEnum}}
+    {{#isContainer}}
+    #[Assert\All([
+        {{#items}}
+        new Assert\Choice([{{#allowableValues}}{{#enumVars}}{{{value}}}{{^-last}}, {{/-last}}{{/enumVars}}{{/allowableValues}}]),
+        {{/items}}
+    ])]
+    {{/isContainer}}
+    {{^isContainer}}
+    #[Assert\Choice([{{#allowableValues}}{{#enumVars}}{{{value}}}{{^-last}}, {{/-last}}{{/enumVars}}{{/allowableValues}}])]
+    {{/isContainer}}
+{{/isEnum}}
+{{#isContainer}}
+    #[Assert\All([
+        {{#items}}
+        new Assert\Type("{{dataType}}"),
+        {{/items}}
+    ])]
+{{/isContainer}}
+{{^isContainer}}
+    {{#isDate}}
+    #[Assert\Type("\DateTime")]
+    {{/isDate}}
+    {{#isDateTime}}
+    #[Assert\Type("\DateTime")]
+    {{/isDateTime}}
+    {{^isDate}}
+    {{^isDateTime}}
+    {{^isEnumRef}}
+    #[Assert\Type("{{dataType}}")]
+    {{/isEnumRef}}
+    {{/isDateTime}}
+    {{/isDate}}
 {{/isContainer}}
 {{#hasValidation}}
     {{#maxLength}}
-     * @Assert\Length(
-     *   max = {{.}}
-     * )
+    #[Assert\Length(max: {{.}})]
     {{/maxLength}}
     {{#minLength}}
-     * @Assert\Length(
-     *   min = {{.}}
-     * )
+    #[Assert\Length(min: {{.}})]
     {{/minLength}}
     {{#minimum}}
     {{#exclusiveMinimum}}
-     * @Assert\GreaterThan({{minimum}})
+    #[Assert\GreaterThan({{minimum}})]
     {{/exclusiveMinimum}}
     {{^exclusiveMinimum}}
-     * @Assert\GreaterThanOrEqual({{minimum}})
+    #[Assert\GreaterThanOrEqual({{minimum}})]
     {{/exclusiveMinimum}}
     {{/minimum}}
     {{#maximum}}
     {{#exclusiveMaximum}}
-     * @Assert\LessThan({{maximum}})
+    #[Assert\LessThan({{maximum}})]
     {{/exclusiveMaximum}}
     {{^exclusiveMaximum}}
-     * @Assert\LessThanOrEqual({{maximum}})
+    #[Assert\LessThanOrEqual({{maximum}})]
     {{/exclusiveMaximum}}
     {{/maximum}}
     {{#pattern}}
-     * @Assert\Regex("/{{.}}/")
+    #[Assert\Regex("/{{.}}/")]
     {{/pattern}}
     {{#maxItems}}
-     * @Assert\Count(
-     *   max = {{.}}
-     * )
+    #[Assert\Count(max: {{.}})]
     {{/maxItems}}
     {{#minItems}}
-     * @Assert\Count(
-     *   min = {{.}}
-     * )
+    #[Assert\Count(min: {{.}})]
     {{/minItems}}
 {{/hasValidation}}
-     */
     protected {{{vendorExtensions.x-parameter-type}}} ${{name}} = {{#defaultValue}}{{{defaultValue}}}{{/defaultValue}}{{^defaultValue}}null{{/defaultValue}};
diff --git a/modules/openapi-generator/src/main/resources/php-symfony/serialization/JmsSerializer.mustache b/modules/openapi-generator/src/main/resources/php-symfony/serialization/JmsSerializer.mustache
index e5ff50c3f7fe..9dfabc9733a3 100644
--- a/modules/openapi-generator/src/main/resources/php-symfony/serialization/JmsSerializer.mustache
+++ b/modules/openapi-generator/src/main/resources/php-symfony/serialization/JmsSerializer.mustache
@@ -101,12 +101,16 @@ class JmsSerializer implements SerializerInterface
             case '\DateTime':
                 return is_null($data) ? null :new DateTime($data);
             default:
+                if (is_null($data)) {
+                    return null;
+                }
+
                 if (!class_exists($type)) {
                     throw new RuntimeException(sprintf("Type %s is unsupported", $type));
                 }
 
                 $reflectionClass = new \ReflectionClass($type);
-                if (!$reflectionClass->implementsInterface('\BackedENum')) {
+                if (!$reflectionClass->implementsInterface('\BackedEnum')) {
                     throw new RuntimeException(sprintf("Type %s is unsupported", $type));
                 }
 
diff --git a/samples/server/petstore/php-symfony/SymfonyBundle-php/Model/ApiResponse.php b/samples/server/petstore/php-symfony/SymfonyBundle-php/Model/ApiResponse.php
index 69f4ccd2777a..e7c2de6ce033 100644
--- a/samples/server/petstore/php-symfony/SymfonyBundle-php/Model/ApiResponse.php
+++ b/samples/server/petstore/php-symfony/SymfonyBundle-php/Model/ApiResponse.php
@@ -48,25 +48,25 @@ class ApiResponse
         /**
      * @var int|null
      * @SerializedName("code")
-     * @Assert\Type("int")
      * @Type("int")
-     */
+    */
+    #[Assert\Type("int")]
     protected ?int $code = null;
 
     /**
      * @var string|null
      * @SerializedName("type")
-     * @Assert\Type("string")
      * @Type("string")
-     */
+    */
+    #[Assert\Type("string")]
     protected ?string $type = null;
 
     /**
      * @var string|null
      * @SerializedName("message")
-     * @Assert\Type("string")
      * @Type("string")
-     */
+    */
+    #[Assert\Type("string")]
     protected ?string $message = null;
 
     /**
@@ -92,15 +92,13 @@ public function getCode(): ?int
         return $this->code;
     }
 
-
-
     /**
-     * Sets code.
-     *
-     * @param int|null $code
-     *
-     * @return $this
-     */
+    * Sets code.
+    *
+    * @param int|null $code
+    *
+    * @return $this
+    */
     public function setCode(?int $code = null): self
     {
         $this->code = $code;
@@ -108,6 +106,9 @@ public function setCode(?int $code = null): self
         return $this;
     }
 
+
+
+
     /**
      * Gets type.
      *
@@ -118,15 +119,13 @@ public function getType(): ?string
         return $this->type;
     }
 
-
-
     /**
-     * Sets type.
-     *
-     * @param string|null $type
-     *
-     * @return $this
-     */
+    * Sets type.
+    *
+    * @param string|null $type
+    *
+    * @return $this
+    */
     public function setType(?string $type = null): self
     {
         $this->type = $type;
@@ -134,6 +133,9 @@ public function setType(?string $type = null): self
         return $this;
     }
 
+
+
+
     /**
      * Gets message.
      *
@@ -144,21 +146,22 @@ public function getMessage(): ?string
         return $this->message;
     }
 
-
-
     /**
-     * Sets message.
-     *
-     * @param string|null $message
-     *
-     * @return $this
-     */
+    * Sets message.
+    *
+    * @param string|null $message
+    *
+    * @return $this
+    */
     public function setMessage(?string $message = null): self
     {
         $this->message = $message;
 
         return $this;
     }
+
+
+
 }
 
 
diff --git a/samples/server/petstore/php-symfony/SymfonyBundle-php/Model/Category.php b/samples/server/petstore/php-symfony/SymfonyBundle-php/Model/Category.php
index 8cecd5ca1a65..fc827e4ae735 100644
--- a/samples/server/petstore/php-symfony/SymfonyBundle-php/Model/Category.php
+++ b/samples/server/petstore/php-symfony/SymfonyBundle-php/Model/Category.php
@@ -48,18 +48,18 @@ class Category
         /**
      * @var int|null
      * @SerializedName("id")
-     * @Assert\Type("int")
      * @Type("int")
-     */
+    */
+    #[Assert\Type("int")]
     protected ?int $id = null;
 
     /**
      * @var string|null
      * @SerializedName("name")
-     * @Assert\Type("string")
      * @Type("string")
-     * @Assert\Regex("/^[a-zA-Z0-9]+[a-zA-Z0-9\\.\\-_]*[a-zA-Z0-9]+$/")
-     */
+    */
+    #[Assert\Type("string")]
+    #[Assert\Regex("/^[a-zA-Z0-9]+[a-zA-Z0-9\\.\\-_]*[a-zA-Z0-9]+$/")]
     protected ?string $name = null;
 
     /**
@@ -84,15 +84,13 @@ public function getId(): ?int
         return $this->id;
     }
 
-
-
     /**
-     * Sets id.
-     *
-     * @param int|null $id
-     *
-     * @return $this
-     */
+    * Sets id.
+    *
+    * @param int|null $id
+    *
+    * @return $this
+    */
     public function setId(?int $id = null): self
     {
         $this->id = $id;
@@ -100,6 +98,9 @@ public function setId(?int $id = null): self
         return $this;
     }
 
+
+
+
     /**
      * Gets name.
      *
@@ -110,21 +111,22 @@ public function getName(): ?string
         return $this->name;
     }
 
-
-
     /**
-     * Sets name.
-     *
-     * @param string|null $name
-     *
-     * @return $this
-     */
+    * Sets name.
+    *
+    * @param string|null $name
+    *
+    * @return $this
+    */
     public function setName(?string $name = null): self
     {
         $this->name = $name;
 
         return $this;
     }
+
+
+
 }
 
 
diff --git a/samples/server/petstore/php-symfony/SymfonyBundle-php/Model/Order.php b/samples/server/petstore/php-symfony/SymfonyBundle-php/Model/Order.php
index ae3f8fb0c5d5..6434aa9121f8 100644
--- a/samples/server/petstore/php-symfony/SymfonyBundle-php/Model/Order.php
+++ b/samples/server/petstore/php-symfony/SymfonyBundle-php/Model/Order.php
@@ -48,33 +48,33 @@ class Order
         /**
      * @var int|null
      * @SerializedName("id")
-     * @Assert\Type("int")
      * @Type("int")
-     */
+    */
+    #[Assert\Type("int")]
     protected ?int $id = null;
 
     /**
      * @var int|null
      * @SerializedName("petId")
-     * @Assert\Type("int")
      * @Type("int")
-     */
+    */
+    #[Assert\Type("int")]
     protected ?int $petId = null;
 
     /**
      * @var int|null
      * @SerializedName("quantity")
-     * @Assert\Type("int")
      * @Type("int")
-     */
+    */
+    #[Assert\Type("int")]
     protected ?int $quantity = null;
 
     /**
      * @var \DateTime|null
      * @SerializedName("shipDate")
-     * @Assert\Type("\DateTime"))
      * @Type("DateTime")
-     */
+    */
+    #[Assert\Type("\DateTime")]
     protected ?\DateTime $shipDate = null;
 
     /**
@@ -82,18 +82,18 @@ class Order
      *
      * @var string|null
      * @SerializedName("status")
-     * @Assert\Choice({ "placed", "approved", "delivered" })
-     * @Assert\Type("string")
      * @Type("string")
-     */
+    */
+    #[Assert\Choice(["placed", "approved", "delivered"])]
+    #[Assert\Type("string")]
     protected ?string $status = null;
 
     /**
      * @var bool|null
      * @SerializedName("complete")
-     * @Assert\Type("bool")
      * @Type("bool")
-     */
+    */
+    #[Assert\Type("bool")]
     protected ?bool $complete = false;
 
     /**
@@ -122,15 +122,13 @@ public function getId(): ?int
         return $this->id;
     }
 
-
-
     /**
-     * Sets id.
-     *
-     * @param int|null $id
-     *
-     * @return $this
-     */
+    * Sets id.
+    *
+    * @param int|null $id
+    *
+    * @return $this
+    */
     public function setId(?int $id = null): self
     {
         $this->id = $id;
@@ -138,6 +136,9 @@ public function setId(?int $id = null): self
         return $this;
     }
 
+
+
+
     /**
      * Gets petId.
      *
@@ -148,15 +149,13 @@ public function getPetId(): ?int
         return $this->petId;
     }
 
-
-
     /**
-     * Sets petId.
-     *
-     * @param int|null $petId
-     *
-     * @return $this
-     */
+    * Sets petId.
+    *
+    * @param int|null $petId
+    *
+    * @return $this
+    */
     public function setPetId(?int $petId = null): self
     {
         $this->petId = $petId;
@@ -164,6 +163,9 @@ public function setPetId(?int $petId = null): self
         return $this;
     }
 
+
+
+
     /**
      * Gets quantity.
      *
@@ -174,15 +176,13 @@ public function getQuantity(): ?int
         return $this->quantity;
     }
 
-
-
     /**
-     * Sets quantity.
-     *
-     * @param int|null $quantity
-     *
-     * @return $this
-     */
+    * Sets quantity.
+    *
+    * @param int|null $quantity
+    *
+    * @return $this
+    */
     public function setQuantity(?int $quantity = null): self
     {
         $this->quantity = $quantity;
@@ -190,6 +190,9 @@ public function setQuantity(?int $quantity = null): self
         return $this;
     }
 
+
+
+
     /**
      * Gets shipDate.
      *
@@ -200,15 +203,13 @@ public function getShipDate(): ?\DateTime
         return $this->shipDate;
     }
 
-
-
     /**
-     * Sets shipDate.
-     *
-     * @param \DateTime|null $shipDate
-     *
-     * @return $this
-     */
+    * Sets shipDate.
+    *
+    * @param \DateTime|null $shipDate
+    *
+    * @return $this
+    */
     public function setShipDate(?\DateTime $shipDate = null): self
     {
         $this->shipDate = $shipDate;
@@ -216,6 +217,9 @@ public function setShipDate(?\DateTime $shipDate = null): self
         return $this;
     }
 
+
+
+
     /**
      * Gets status.
      *
@@ -226,15 +230,13 @@ public function getStatus(): ?string
         return $this->status;
     }
 
-
-
     /**
-     * Sets status.
-     *
-     * @param string|null $status  Order Status
-     *
-     * @return $this
-     */
+    * Sets status.
+    *
+    * @param string|null $status  Order Status
+    *
+    * @return $this
+    */
     public function setStatus(?string $status = null): self
     {
         $this->status = $status;
@@ -242,6 +244,9 @@ public function setStatus(?string $status = null): self
         return $this;
     }
 
+
+
+
     /**
      * Gets complete.
      *
@@ -252,21 +257,22 @@ public function isComplete(): ?bool
         return $this->complete;
     }
 
-
-
     /**
-     * Sets complete.
-     *
-     * @param bool|null $complete
-     *
-     * @return $this
-     */
+    * Sets complete.
+    *
+    * @param bool|null $complete
+    *
+    * @return $this
+    */
     public function setComplete(?bool $complete = null): self
     {
         $this->complete = $complete;
 
         return $this;
     }
+
+
+
 }
 
 
diff --git a/samples/server/petstore/php-symfony/SymfonyBundle-php/Model/Pet.php b/samples/server/petstore/php-symfony/SymfonyBundle-php/Model/Pet.php
index 2225627acf2c..deda58c617ee 100644
--- a/samples/server/petstore/php-symfony/SymfonyBundle-php/Model/Pet.php
+++ b/samples/server/petstore/php-symfony/SymfonyBundle-php/Model/Pet.php
@@ -48,47 +48,47 @@ class Pet
         /**
      * @var int|null
      * @SerializedName("id")
-     * @Assert\Type("int")
      * @Type("int")
-     */
+    */
+    #[Assert\Type("int")]
     protected ?int $id = null;
 
     /**
      * @var Category|null
      * @SerializedName("category")
-     * @Assert\Type("OpenAPI\Server\Model\Category")
      * @Type("OpenAPI\Server\Model\Category")
-     */
+    */
+    #[Assert\Type("OpenAPI\Server\Model\Category")]
     protected ?Category $category = null;
 
     /**
      * @var string|null
      * @SerializedName("name")
-     * @Assert\NotNull()
-     * @Assert\Type("string")
      * @Type("string")
-     */
+    */
+    #[Assert\NotNull]
+    #[Assert\Type("string")]
     protected ?string $name = null;
 
     /**
      * @var string[]|null
      * @SerializedName("photoUrls")
-     * @Assert\NotNull()
-     * @Assert\All({
-     *   @Assert\Type("string")
-     * })
      * @Type("array<string>")
-     */
+    */
+    #[Assert\NotNull]
+    #[Assert\All([
+        new Assert\Type("string"),
+    ])]
     protected ?array $photoUrls = null;
 
     /**
      * @var Tag[]|null
      * @SerializedName("tags")
-     * @Assert\All({
-     *   @Assert\Type("OpenAPI\Server\Model\Tag")
-     * })
      * @Type("array<OpenAPI\Server\Model\Tag>")
-     */
+    */
+    #[Assert\All([
+        new Assert\Type("OpenAPI\Server\Model\Tag"),
+    ])]
     protected ?array $tags = null;
 
     /**
@@ -96,10 +96,10 @@ class Pet
      *
      * @var string|null
      * @SerializedName("status")
-     * @Assert\Choice({ "available", "pending", "sold" })
-     * @Assert\Type("string")
      * @Type("string")
-     */
+    */
+    #[Assert\Choice(["available", "pending", "sold"])]
+    #[Assert\Type("string")]
     protected ?string $status = null;
 
     /**
@@ -128,15 +128,13 @@ public function getId(): ?int
         return $this->id;
     }
 
-
-
     /**
-     * Sets id.
-     *
-     * @param int|null $id
-     *
-     * @return $this
-     */
+    * Sets id.
+    *
+    * @param int|null $id
+    *
+    * @return $this
+    */
     public function setId(?int $id = null): self
     {
         $this->id = $id;
@@ -144,6 +142,9 @@ public function setId(?int $id = null): self
         return $this;
     }
 
+
+
+
     /**
      * Gets category.
      *
@@ -154,15 +155,13 @@ public function getCategory(): ?Category
         return $this->category;
     }
 
-
-
     /**
-     * Sets category.
-     *
-     * @param Category|null $category
-     *
-     * @return $this
-     */
+    * Sets category.
+    *
+    * @param Category|null $category
+    *
+    * @return $this
+    */
     public function setCategory(?Category $category = null): self
     {
         $this->category = $category;
@@ -170,6 +169,9 @@ public function setCategory(?Category $category = null): self
         return $this;
     }
 
+
+
+
     /**
      * Gets name.
      *
@@ -180,15 +182,13 @@ public function getName(): ?string
         return $this->name;
     }
 
-
-
     /**
-     * Sets name.
-     *
-     * @param string|null $name
-     *
-     * @return $this
-     */
+    * Sets name.
+    *
+    * @param string|null $name
+    *
+    * @return $this
+    */
     public function setName(?string $name): self
     {
         $this->name = $name;
@@ -196,6 +196,9 @@ public function setName(?string $name): self
         return $this;
     }
 
+
+
+
     /**
      * Gets photoUrls.
      *
@@ -206,15 +209,13 @@ public function getPhotoUrls(): ?array
         return $this->photoUrls;
     }
 
-
-
     /**
-     * Sets photoUrls.
-     *
-     * @param string[]|null $photoUrls
-     *
-     * @return $this
-     */
+    * Sets photoUrls.
+    *
+    * @param string[]|null $photoUrls
+    *
+    * @return $this
+    */
     public function setPhotoUrls(?array $photoUrls): self
     {
         $this->photoUrls = $photoUrls;
@@ -222,6 +223,9 @@ public function setPhotoUrls(?array $photoUrls): self
         return $this;
     }
 
+
+
+
     /**
      * Gets tags.
      *
@@ -232,15 +236,13 @@ public function getTags(): ?array
         return $this->tags;
     }
 
-
-
     /**
-     * Sets tags.
-     *
-     * @param Tag[]|null $tags
-     *
-     * @return $this
-     */
+    * Sets tags.
+    *
+    * @param Tag[]|null $tags
+    *
+    * @return $this
+    */
     public function setTags(?array $tags = null): self
     {
         $this->tags = $tags;
@@ -248,6 +250,9 @@ public function setTags(?array $tags = null): self
         return $this;
     }
 
+
+
+
     /**
      * Gets status.
      *
@@ -258,21 +263,22 @@ public function getStatus(): ?string
         return $this->status;
     }
 
-
-
     /**
-     * Sets status.
-     *
-     * @param string|null $status  pet status in the store
-     *
-     * @return $this
-     */
+    * Sets status.
+    *
+    * @param string|null $status  pet status in the store
+    *
+    * @return $this
+    */
     public function setStatus(?string $status = null): self
     {
         $this->status = $status;
 
         return $this;
     }
+
+
+
 }
 
 
diff --git a/samples/server/petstore/php-symfony/SymfonyBundle-php/Model/Tag.php b/samples/server/petstore/php-symfony/SymfonyBundle-php/Model/Tag.php
index 5c242dff5370..7d669ab9bb07 100644
--- a/samples/server/petstore/php-symfony/SymfonyBundle-php/Model/Tag.php
+++ b/samples/server/petstore/php-symfony/SymfonyBundle-php/Model/Tag.php
@@ -48,17 +48,17 @@ class Tag
         /**
      * @var int|null
      * @SerializedName("id")
-     * @Assert\Type("int")
      * @Type("int")
-     */
+    */
+    #[Assert\Type("int")]
     protected ?int $id = null;
 
     /**
      * @var string|null
      * @SerializedName("name")
-     * @Assert\Type("string")
      * @Type("string")
-     */
+    */
+    #[Assert\Type("string")]
     protected ?string $name = null;
 
     /**
@@ -83,15 +83,13 @@ public function getId(): ?int
         return $this->id;
     }
 
-
-
     /**
-     * Sets id.
-     *
-     * @param int|null $id
-     *
-     * @return $this
-     */
+    * Sets id.
+    *
+    * @param int|null $id
+    *
+    * @return $this
+    */
     public function setId(?int $id = null): self
     {
         $this->id = $id;
@@ -99,6 +97,9 @@ public function setId(?int $id = null): self
         return $this;
     }
 
+
+
+
     /**
      * Gets name.
      *
@@ -109,21 +110,22 @@ public function getName(): ?string
         return $this->name;
     }
 
-
-
     /**
-     * Sets name.
-     *
-     * @param string|null $name
-     *
-     * @return $this
-     */
+    * Sets name.
+    *
+    * @param string|null $name
+    *
+    * @return $this
+    */
     public function setName(?string $name = null): self
     {
         $this->name = $name;
 
         return $this;
     }
+
+
+
 }
 
 
diff --git a/samples/server/petstore/php-symfony/SymfonyBundle-php/Model/User.php b/samples/server/petstore/php-symfony/SymfonyBundle-php/Model/User.php
index db11613de25e..b15d7fef65d8 100644
--- a/samples/server/petstore/php-symfony/SymfonyBundle-php/Model/User.php
+++ b/samples/server/petstore/php-symfony/SymfonyBundle-php/Model/User.php
@@ -48,57 +48,57 @@ class User
         /**
      * @var int|null
      * @SerializedName("id")
-     * @Assert\Type("int")
      * @Type("int")
-     */
+    */
+    #[Assert\Type("int")]
     protected ?int $id = null;
 
     /**
      * @var string|null
      * @SerializedName("username")
-     * @Assert\Type("string")
      * @Type("string")
-     */
+    */
+    #[Assert\Type("string")]
     protected ?string $username = null;
 
     /**
      * @var string|null
      * @SerializedName("firstName")
-     * @Assert\Type("string")
      * @Type("string")
-     */
+    */
+    #[Assert\Type("string")]
     protected ?string $firstName = null;
 
     /**
      * @var string|null
      * @SerializedName("lastName")
-     * @Assert\Type("string")
      * @Type("string")
-     */
+    */
+    #[Assert\Type("string")]
     protected ?string $lastName = null;
 
     /**
      * @var string|null
      * @SerializedName("email")
-     * @Assert\Type("string")
      * @Type("string")
-     */
+    */
+    #[Assert\Type("string")]
     protected ?string $email = null;
 
     /**
      * @var string|null
      * @SerializedName("password")
-     * @Assert\Type("string")
      * @Type("string")
-     */
+    */
+    #[Assert\Type("string")]
     protected ?string $password = null;
 
     /**
      * @var string|null
      * @SerializedName("phone")
-     * @Assert\Type("string")
      * @Type("string")
-     */
+    */
+    #[Assert\Type("string")]
     protected ?string $phone = null;
 
     /**
@@ -106,9 +106,9 @@ class User
      *
      * @var int|null
      * @SerializedName("userStatus")
-     * @Assert\Type("int")
      * @Type("int")
-     */
+    */
+    #[Assert\Type("int")]
     protected ?int $userStatus = null;
 
     /**
@@ -139,15 +139,13 @@ public function getId(): ?int
         return $this->id;
     }
 
-
-
     /**
-     * Sets id.
-     *
-     * @param int|null $id
-     *
-     * @return $this
-     */
+    * Sets id.
+    *
+    * @param int|null $id
+    *
+    * @return $this
+    */
     public function setId(?int $id = null): self
     {
         $this->id = $id;
@@ -155,6 +153,9 @@ public function setId(?int $id = null): self
         return $this;
     }
 
+
+
+
     /**
      * Gets username.
      *
@@ -165,15 +166,13 @@ public function getUsername(): ?string
         return $this->username;
     }
 
-
-
     /**
-     * Sets username.
-     *
-     * @param string|null $username
-     *
-     * @return $this
-     */
+    * Sets username.
+    *
+    * @param string|null $username
+    *
+    * @return $this
+    */
     public function setUsername(?string $username = null): self
     {
         $this->username = $username;
@@ -181,6 +180,9 @@ public function setUsername(?string $username = null): self
         return $this;
     }
 
+
+
+
     /**
      * Gets firstName.
      *
@@ -191,15 +193,13 @@ public function getFirstName(): ?string
         return $this->firstName;
     }
 
-
-
     /**
-     * Sets firstName.
-     *
-     * @param string|null $firstName
-     *
-     * @return $this
-     */
+    * Sets firstName.
+    *
+    * @param string|null $firstName
+    *
+    * @return $this
+    */
     public function setFirstName(?string $firstName = null): self
     {
         $this->firstName = $firstName;
@@ -207,6 +207,9 @@ public function setFirstName(?string $firstName = null): self
         return $this;
     }
 
+
+
+
     /**
      * Gets lastName.
      *
@@ -217,15 +220,13 @@ public function getLastName(): ?string
         return $this->lastName;
     }
 
-
-
     /**
-     * Sets lastName.
-     *
-     * @param string|null $lastName
-     *
-     * @return $this
-     */
+    * Sets lastName.
+    *
+    * @param string|null $lastName
+    *
+    * @return $this
+    */
     public function setLastName(?string $lastName = null): self
     {
         $this->lastName = $lastName;
@@ -233,6 +234,9 @@ public function setLastName(?string $lastName = null): self
         return $this;
     }
 
+
+
+
     /**
      * Gets email.
      *
@@ -243,15 +247,13 @@ public function getEmail(): ?string
         return $this->email;
     }
 
-
-
     /**
-     * Sets email.
-     *
-     * @param string|null $email
-     *
-     * @return $this
-     */
+    * Sets email.
+    *
+    * @param string|null $email
+    *
+    * @return $this
+    */
     public function setEmail(?string $email = null): self
     {
         $this->email = $email;
@@ -259,6 +261,9 @@ public function setEmail(?string $email = null): self
         return $this;
     }
 
+
+
+
     /**
      * Gets password.
      *
@@ -269,15 +274,13 @@ public function getPassword(): ?string
         return $this->password;
     }
 
-
-
     /**
-     * Sets password.
-     *
-     * @param string|null $password
-     *
-     * @return $this
-     */
+    * Sets password.
+    *
+    * @param string|null $password
+    *
+    * @return $this
+    */
     public function setPassword(?string $password = null): self
     {
         $this->password = $password;
@@ -285,6 +288,9 @@ public function setPassword(?string $password = null): self
         return $this;
     }
 
+
+
+
     /**
      * Gets phone.
      *
@@ -295,15 +301,13 @@ public function getPhone(): ?string
         return $this->phone;
     }
 
-
-
     /**
-     * Sets phone.
-     *
-     * @param string|null $phone
-     *
-     * @return $this
-     */
+    * Sets phone.
+    *
+    * @param string|null $phone
+    *
+    * @return $this
+    */
     public function setPhone(?string $phone = null): self
     {
         $this->phone = $phone;
@@ -311,6 +315,9 @@ public function setPhone(?string $phone = null): self
         return $this;
     }
 
+
+
+
     /**
      * Gets userStatus.
      *
@@ -321,21 +328,22 @@ public function getUserStatus(): ?int
         return $this->userStatus;
     }
 
-
-
     /**
-     * Sets userStatus.
-     *
-     * @param int|null $userStatus  User Status
-     *
-     * @return $this
-     */
+    * Sets userStatus.
+    *
+    * @param int|null $userStatus  User Status
+    *
+    * @return $this
+    */
     public function setUserStatus(?int $userStatus = null): self
     {
         $this->userStatus = $userStatus;
 
         return $this;
     }
+
+
+
 }
 
 
diff --git a/samples/server/petstore/php-symfony/SymfonyBundle-php/Service/JmsSerializer.php b/samples/server/petstore/php-symfony/SymfonyBundle-php/Service/JmsSerializer.php
index 12c69bab088b..5abbc6de3fb9 100644
--- a/samples/server/petstore/php-symfony/SymfonyBundle-php/Service/JmsSerializer.php
+++ b/samples/server/petstore/php-symfony/SymfonyBundle-php/Service/JmsSerializer.php
@@ -101,12 +101,16 @@ private function deserializeString($data, string $type)
             case '\DateTime':
                 return is_null($data) ? null :new DateTime($data);
             default:
+                if (is_null($data)) {
+                    return null;
+                }
+
                 if (!class_exists($type)) {
                     throw new RuntimeException(sprintf("Type %s is unsupported", $type));
                 }
 
                 $reflectionClass = new \ReflectionClass($type);
-                if (!$reflectionClass->implementsInterface('\BackedENum')) {
+                if (!$reflectionClass->implementsInterface('\BackedEnum')) {
                     throw new RuntimeException(sprintf("Type %s is unsupported", $type));
                 }
 
diff --git a/samples/server/petstore/php-symfony/SymfonyBundle-php/composer.json b/samples/server/petstore/php-symfony/SymfonyBundle-php/composer.json
index 258c66371039..fdce9d5c69c3 100644
--- a/samples/server/petstore/php-symfony/SymfonyBundle-php/composer.json
+++ b/samples/server/petstore/php-symfony/SymfonyBundle-php/composer.json
@@ -20,6 +20,7 @@
         "ext-curl": "*",
         "ext-json": "*",
         "ext-mbstring": "*",
+        "doctrine/annotations": "^2.0",
         "symfony/validator": "^6.4|^7.0",
         "jms/serializer-bundle": "^5.4",
         "symfony/framework-bundle": "^6.4|^7.0"