diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 27d9a2e..03fb02d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -92,3 +92,25 @@ jobs:
 
       - name: Run JavaScript unit and browser tests
         run: npm test
+
+  phpstan:
+    name: PHPStan
+    runs-on: ubuntu-22.04
+    timeout-minutes: 10
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: '8.3'
+          coverage: none
+          tools: composer:v2
+
+      - name: Install Composer dependencies
+        run: composer update --no-interaction --prefer-dist --no-progress
+
+      - name: Run PHPStan
+        run: composer phpstan
diff --git a/AGENTS.md b/AGENTS.md
index 4310404..95fdc4e 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -8,7 +8,8 @@ Local path: `/Volumes/SRC/JsFormValidatorBundle`
 - PR #173 revived the project and was merged into `formapro/master`.
 - PR #174 restored GitHub Actions CI and was merged into `formapro/master`.
 - PR #175 restored selected old PR fixes and was merged into `formapro/master`.
-- Replacement PRs #176, #177, and #178 are open, ready for review, and were last checked as `MERGEABLE / CLEAN` with green CI.
+- Replacement PRs #176, #177, and #178 were merged into `formapro/master`.
+- `1.7.0-beta1` was published from `formapro/master`.
 
 ## CI
 
@@ -18,16 +19,17 @@ Local path: `/Volumes/SRC/JsFormValidatorBundle`
 - The PHP job runs `composer update`, `composer validate --strict`, and `composer test`.
 - The JavaScript job runs on Node `22` with PHP `8.3`.
 - The JavaScript job installs Cypress system dependencies, then runs `composer update`, `npm install`, and `npm test`.
+- The PHPStan job runs on PHP `8.3`, installs dependencies with `composer update`, warms the Symfony test cache, and runs `composer phpstan`.
 - The old `.travis.yml` file was removed.
 - `README.md` was updated to use a GitHub Actions badge and test instructions instead of Travis CI references.
 - `package.json` no longer advertises the old Travis CI badge in the package description.
 
 ## Local Validation
 
-- `php /tmp/jsfv-composer.phar test` passes: `3 tests, 14 assertions`.
-- `npm test` passes: Jest `184 tests`; Cypress e2e `16 tests`.
+- `php /tmp/jsfv-composer.phar test` passes: `5 tests, 18 assertions`.
+- `php /tmp/jsfv-composer.phar phpstan` runs PHPStan with `phpstan.neon`.
+- `npm test` passes: Jest `197 tests`; Cypress e2e `16 tests`.
 - The local `composer` shim is broken with `Could not open input file: /Users/ton/bin/composer`, so use `/tmp/jsfv-composer.phar` locally if needed.
-- The working tree was clean after the latest validation.
 
 ## GitHub Checks Note
 
diff --git a/README.md b/README.md
index ee4bb29..efc30a4 100644
--- a/README.md
+++ b/README.md
@@ -192,6 +192,12 @@ Run the PHP test suite:
 composer test
 ```
 
+Run PHPStan static analysis:
+
+```bash
+composer phpstan
+```
+
 Run the JavaScript unit tests and Cypress browser smoke test:
 
 ```bash
@@ -205,5 +211,5 @@ composer validate --strict
 git diff --check
 ```
 
-The same maintained test contour is also run by GitHub Actions on pushes and
-pull requests.
+The same maintained test and static-analysis checks are also run by GitHub
+Actions on pushes and pull requests.
diff --git a/Tests/Controller/AjaxControllerTest.php b/Tests/Controller/AjaxControllerTest.php
index 296ef0f..f9d526f 100644
--- a/Tests/Controller/AjaxControllerTest.php
+++ b/Tests/Controller/AjaxControllerTest.php
@@ -104,6 +104,10 @@ private function createRegistry(ObjectRepository $repository)
     }
 }
 
+class InMemoryEntity
+{
+}
+
 class InMemoryRepository implements ObjectRepository
 {
     public function find(mixed $id): ?object
@@ -134,8 +138,11 @@ public function findOneBy(array $criteria): ?object
         return null;
     }
 
+    /**
+     * @return class-string<object>
+     */
     public function getClassName(): string
     {
-        return 'InMemoryEntity';
+        return InMemoryEntity::class;
     }
 }
diff --git a/composer.json b/composer.json
index 3141bf3..f9fa8c5 100644
--- a/composer.json
+++ b/composer.json
@@ -33,6 +33,8 @@
     },
 
     "require-dev": {
+        "phpstan/phpstan": "^2.1",
+        "phpstan/phpstan-symfony": "^2.0",
         "phpunit/phpunit": "^10.5 || ^11.5",
         "symfony/asset": "^5.4 || ^6.4 || ^7.0",
         "symfony/console": "^5.4 || ^6.4 || ^7.0",
@@ -76,6 +78,10 @@
     },
 
     "scripts": {
+        "phpstan": [
+            "APP_ENV=test APP_DEBUG=1 php Tests/app/bin/console cache:warmup --env=test",
+            "phpstan analyse --memory-limit=1G"
+        ],
         "test": "phpunit"
     }
 }
diff --git a/phpstan.neon b/phpstan.neon
new file mode 100644
index 0000000..58aaf2f
--- /dev/null
+++ b/phpstan.neon
@@ -0,0 +1,13 @@
+includes:
+    - vendor/phpstan/phpstan-symfony/extension.neon
+    - vendor/phpstan/phpstan-symfony/rules.neon
+
+parameters:
+    level: 5
+    paths:
+        - src
+        - Tests/Controller
+        - Tests/Unit
+        - Tests/app/src
+    symfony:
+        containerXmlPath: Tests/app/var/cache/test/App_KernelTestDebugContainer.xml
diff --git a/src/Factory/JsFormValidatorFactory.php b/src/Factory/JsFormValidatorFactory.php
index 344ffd7..48d345e 100755
--- a/src/Factory/JsFormValidatorFactory.php
+++ b/src/Factory/JsFormValidatorFactory.php
@@ -12,9 +12,9 @@
 use Symfony\Component\Form\FormInterface;
 use Symfony\Contracts\Translation\TranslatorInterface;
 use Symfony\Component\Validator\Constraint;
-use Symfony\Component\Validator\Mapping\ClassMetadata;
+use Symfony\Component\Validator\Mapping\ClassMetadataInterface;
 use Symfony\Component\Validator\Mapping\GetterMetadata;
-use Symfony\Component\Validator\Mapping\PropertyMetadata;
+use Symfony\Component\Validator\Mapping\MetadataInterface;
 use Symfony\Component\Validator\Validator\ValidatorInterface;
 
 /**
@@ -87,7 +87,7 @@ public function __construct(
      *
      * @param string $className
      *
-     * @return ClassMetadata
+     * @return MetadataInterface
      * @codeCoverageIgnore
      */
     protected function getMetadataFor($className)
@@ -170,7 +170,7 @@ public function getQueue()
      *
      * @param FormInterface $form
      *
-     * @return array
+     * @return void
      */
     public function addToQueue(FormInterface $form)
     {
@@ -316,15 +316,16 @@ protected function getValidationData(FormInterface $form)
         // If parent has metadata
         $parent = $form->getParent();
         if ($parent && null !== $parent->getConfig()->getDataClass()) {
-            $classMetadata = $metadata = $this->getMetadataFor($parent->getConfig()->getDataClass());
-            if ($classMetadata->hasPropertyMetadata($form->getName())) {
+            $classMetadata = $this->getMetadataFor($parent->getConfig()->getDataClass());
+            if ($classMetadata instanceof ClassMetadataInterface && $classMetadata->hasPropertyMetadata($form->getName())) {
                 $metadata = $classMetadata->getPropertyMetadata($form->getName());
-                /** @var PropertyMetadata $item */
                 foreach ($metadata as $item) {
+                    $constraints = $item instanceof GetterMetadata ? array() : $item->getConstraints();
+                    $getters = $item instanceof GetterMetadata ? array($item) : array();
                     $this->composeValidationData(
                         $parentData,
-                        $item->getConstraints(),
-                        $getters = !empty($item->getters) ? (array)$item->getters : array()
+                        $constraints,
+                        $getters
                     );
                 }
             }
@@ -335,7 +336,7 @@ protected function getValidationData(FormInterface $form)
             $this->composeValidationData(
                 $ownData,
                 $metadata->getConstraints(),
-                $getters = !empty($metadata->getters) ? (array)$metadata->getters : array()
+                $this->getGetterMetadata($metadata)
             );
         }
         // If has constraints in a form element
@@ -364,6 +365,27 @@ protected function getValidationData(FormInterface $form)
         return $result;
     }
 
+    /**
+     * @return GetterMetadata[]
+     */
+    protected function getGetterMetadata(MetadataInterface $metadata)
+    {
+        if (!$metadata instanceof ClassMetadataInterface) {
+            return array();
+        }
+
+        $getters = array();
+        foreach ($metadata->getConstrainedProperties() as $property) {
+            foreach ($metadata->getPropertyMetadata($property) as $item) {
+                if ($item instanceof GetterMetadata) {
+                    $getters[] = $item;
+                }
+            }
+        }
+
+        return $getters;
+    }
+
     protected function mergeDataRecursive(array $array1, array $array2)
     {
         foreach ($array2 as $key => $value) {
@@ -515,7 +537,7 @@ protected function getTransformerParam(DataTransformerInterface $transformer, $p
         $reflection = new \ReflectionProperty($transformer, $paramName);
         $reflection->setAccessible(true);
 
-        if (method_exists($reflection, 'isInitialized') && !$reflection->isInitialized($transformer)) {
+        if (!$reflection->isInitialized($transformer)) {
             return null;
         }
 
diff --git a/src/Form/Constraint/UniqueEntity.php b/src/Form/Constraint/UniqueEntity.php
index f97b049..46280e1 100755
--- a/src/Form/Constraint/UniqueEntity.php
+++ b/src/Form/Constraint/UniqueEntity.php
@@ -31,6 +31,10 @@ class UniqueEntity extends BaseUniqueEntity
      */
     public function __construct(BaseUniqueEntity $base, $entityName, $entity = null)
     {
+        foreach (get_object_vars($base) as $prop => $value) {
+            $this->{$prop} = $value;
+        }
+
         $this->entityName = $entityName;
         if (is_object($entity)) {
             $this->entity = $entity;
@@ -38,9 +42,5 @@ public function __construct(BaseUniqueEntity $base, $entityName, $entity = null)
                 $this->entityId = $entity->getId();
             }
         }
-
-        foreach ($base as $prop => $value) {
-            $this->{$prop} = $value;
-        }
     }
 }
diff --git a/src/Model/JsModelAbstract.php b/src/Model/JsModelAbstract.php
index cfad45e..462a909 100644
--- a/src/Model/JsModelAbstract.php
+++ b/src/Model/JsModelAbstract.php
@@ -49,7 +49,8 @@ public static function phpValueToJs($value)
         // For an object or associative array
         elseif (is_object($value) || (is_array($value) && array_values($value) !== $value)) {
             $jsObject = array();
-            foreach ($value as $paramName => $paramValue) {
+            $properties = is_object($value) ? get_object_vars($value) : $value;
+            foreach ($properties as $paramName => $paramValue) {
                 $paramName = addcslashes($paramName, '\'\\');
                 $jsObject[] = "'$paramName':" . self::phpValueToJs($paramValue);
             }
@@ -77,7 +78,7 @@ public static function phpValueToJs($value)
         }
         // For numbers
         elseif (is_numeric($value)) {
-            return $value;
+            return (string) $value;
         }
         // For null
         elseif (is_null($value)) {
@@ -95,7 +96,7 @@ public static function phpValueToJs($value)
     public function toArray()
     {
         $result = array();
-        foreach ($this as $key => $value) {
+        foreach (get_object_vars($this) as $key => $value) {
             $result[$key] = $value;
         }