diff --git a/.github/workflows/static-analysis.yml b/.github/workflows/static-analysis.yml
new file mode 100644
index 0000000..8d63d82
--- /dev/null
+++ b/.github/workflows/static-analysis.yml
@@ -0,0 +1,27 @@
+name: static-analysis
+
+on:
+    push:
+        branches: [master]
+    pull_request:
+        branches: [master]
+
+jobs:
+    phpstan:
+        runs-on: ubuntu-latest
+        steps:
+            - name: Checkout code
+              uses: actions/checkout@v4
+
+            - name: Setup PHP
+              uses: shivammathur/setup-php@v2
+              with:
+                  php-version: 8.4
+                  extensions: intl
+                  coverage: none
+
+      - name: Install dependencies
+        uses: ramsey/composer-install@v3
+
+      - name: Run PHPStan
+        run: vendor/bin/phpstan --error-format=github
diff --git a/composer.json b/composer.json
index aa54c99..ff8018b 100644
--- a/composer.json
+++ b/composer.json
@@ -21,7 +21,8 @@
     },
     "require-dev": {
         "orchestra/testbench-browser-kit": "^8.5|^9.0",
-        "phpunit/phpunit": "^10.1"
+        "phpunit/phpunit": "^10.1",
+        "phpstan/phpstan": "^2.0"
     },
     "suggest": {
         "ext-intl": "*"
diff --git a/phpstan.neon b/phpstan.neon
new file mode 100644
index 0000000..ff776e8
--- /dev/null
+++ b/phpstan.neon
@@ -0,0 +1,9 @@
+parameters:
+    level: 5
+    paths:
+        - src
+        - tests
+    ignoreErrors:
+        - '#Call to an undefined method Illuminate\\Contracts\\Translation\\Translator::has#'
+        - '#Call to an undefined static method Illuminate\\Support\\Facades\\Route::localized#'
+        - '#Argument of an invalid type Illuminate\\Routing\\RouteCollectionInterface supplied for foreach, only iterables are supported#'
\ No newline at end of file
diff --git a/src/Mcamara/LaravelLocalization/LanguageNegotiator.php b/src/Mcamara/LaravelLocalization/LanguageNegotiator.php
index 1601753..4c513d3 100644
--- a/src/Mcamara/LaravelLocalization/LanguageNegotiator.php
+++ b/src/Mcamara/LaravelLocalization/LanguageNegotiator.php
@@ -20,7 +20,7 @@ class LanguageNegotiator
     /**
      * Illuminate request class.
      *
-     * @var Illuminate\Foundation\Application
+     * @var \Illuminate\Foundation\Application
      */
     protected $app;
 
diff --git a/src/Mcamara/LaravelLocalization/LaravelLocalization.php b/src/Mcamara/LaravelLocalization/LaravelLocalization.php
index 8cd2215..66b185c 100644
--- a/src/Mcamara/LaravelLocalization/LaravelLocalization.php
+++ b/src/Mcamara/LaravelLocalization/LaravelLocalization.php
@@ -47,7 +47,7 @@ class LaravelLocalization
     /**
      * Current locale.
      *
-     * @var string
+     * @var string|false
      */
     protected $currentLocale = false;
 
@@ -267,7 +267,7 @@ public function getURLFromRouteNameTranslated($locale, $transKeyName, $attribute
         if ($forceDefaultLocation || !($locale === $this->defaultLocale && $this->hideDefaultLocaleInURL())) {
             $route = '/'.$locale;
         }
-        if (\is_string($locale) && $this->translator->has($transKeyName, $locale)) {
+        if ($this->translator->has($transKeyName, $locale)) {
             $translation = $this->translator->get($transKeyName, [], $locale);
             $route .= '/'.$translation;
 
@@ -480,7 +480,7 @@ public function getCurrentLocale()
     /**
      * Returns current regional.
      *
-     * @return string current regional
+     * @return string|null current regional
      */
     public function getCurrentLocaleRegional(): string|null
     {
diff --git a/src/Mcamara/LaravelLocalization/Middleware/LaravelLocalizationMiddlewareBase.php b/src/Mcamara/LaravelLocalization/Middleware/LaravelLocalizationMiddlewareBase.php
index e12f908..79165d8 100644
--- a/src/Mcamara/LaravelLocalization/Middleware/LaravelLocalizationMiddlewareBase.php
+++ b/src/Mcamara/LaravelLocalization/Middleware/LaravelLocalizationMiddlewareBase.php
@@ -8,9 +8,9 @@ class LaravelLocalizationMiddlewareBase
     /**
      * The URIs that should not be localized.
      *
-     * @var array
+     * @var array|null
      */
-    protected $except;
+    protected $except = null;
 
     /**
      * Determine if the request has a URI that should not be localized.
diff --git a/src/Mcamara/LaravelLocalization/Middleware/LocaleCookieRedirect.php b/src/Mcamara/LaravelLocalization/Middleware/LocaleCookieRedirect.php
index 9eb396b..214fb79 100644
--- a/src/Mcamara/LaravelLocalization/Middleware/LocaleCookieRedirect.php
+++ b/src/Mcamara/LaravelLocalization/Middleware/LocaleCookieRedirect.php
@@ -24,9 +24,9 @@ public function handle($request, Closure $next)
         }
 
         $params = explode('/', $request->path());
-        $locale = $request->cookie('locale', false);
+        $locale = $request->cookie('locale') ?? false;
 
-        if (\count($params) > 0 && app('laravellocalization')->checkLocaleInSupportedLocales($params[0])) {
+        if (app('laravellocalization')->checkLocaleInSupportedLocales($params[0])) {
             return $next($request)->withCookie(cookie()->forever('locale', $params[0]));
         }
 
diff --git a/src/Mcamara/LaravelLocalization/Middleware/LocaleSessionRedirect.php b/src/Mcamara/LaravelLocalization/Middleware/LocaleSessionRedirect.php
index 93f9bf7..e8bbf8b 100644
--- a/src/Mcamara/LaravelLocalization/Middleware/LocaleSessionRedirect.php
+++ b/src/Mcamara/LaravelLocalization/Middleware/LocaleSessionRedirect.php
@@ -26,7 +26,7 @@ public function handle($request, Closure $next)
         $params = explode('/', $request->path());
         $locale = session('locale', false);
 
-        if (\count($params) > 0 && app('laravellocalization')->checkLocaleInSupportedLocales($params[0])) {
+        if (app('laravellocalization')->checkLocaleInSupportedLocales($params[0])) {
             session(['locale' => $params[0]]);
 
             return $next($request);
diff --git a/tests/LaravelLocalizationTest.php b/tests/LaravelLocalizationTest.php
index 93bc8e7..b9b814a 100644
--- a/tests/LaravelLocalizationTest.php
+++ b/tests/LaravelLocalizationTest.php
@@ -65,14 +65,14 @@ protected function setUpRoutes(): void
 
     /**
      * Create fake request
-     * @param  [type] $method     [description]
-     * @param  [type] $content    [description]
+     * @param  string $method     [description]
+     * @param  mixed $content    [description]
      * @param  string $uri        [description]
      * @param  array  $server     [description]
      * @param  array  $parameters [description]
      * @param  array  $cookies    [description]
      * @param  array  $files      [description]
-     * @return [type]             [description]
+     * @return \Illuminate\Http\Request             [description]
      */
     protected function createRequest(
         $uri = '/test',
@@ -101,7 +101,7 @@ protected function createRequest(
     /**
      * Define environment setup.
      *
-     * @param Illuminate\Foundation\Application $app
+     * @param \Illuminate\Foundation\Application $app
      *
      * @return void
      */