diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PhpSymfonyServerCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PhpSymfonyServerCodegen.java
index 2a3c2ffef01..fede4f2a34a 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PhpSymfonyServerCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PhpSymfonyServerCodegen.java
@@ -417,7 +417,17 @@ public class PhpSymfonyServerCodegen extends AbstractPhpCodegen implements Codeg
                 op.vendorExtensions.put("x-comment-type", "void");
             }
             // Create a variable to add typing for return value of interface
-            if (op.returnType != null) {
+            if ("bool".equals(op.returnType)) {
+                op.vendorExtensions.put("x-return-type", "bool");
+            } else if ("UploadedFile".equals(op.returnType)) {
+                op.vendorExtensions.put("x-return-type", "string");
+            } else if ("int".equals(op.returnType)) {
+                op.vendorExtensions.put("x-return-type", "int");
+            } else if ("float".equals(op.returnType)) {
+                op.vendorExtensions.put("x-return-type", "float");
+            } else if ("string".equals(op.returnType)) {
+                op.vendorExtensions.put("x-return-type", "string");
+            } else if (op.returnType != null) {
                 op.vendorExtensions.put("x-return-type", "array|object|null");
             } else {
                 op.vendorExtensions.put("x-return-type", "void");
diff --git a/samples/server/petstore/php-symfony/SymfonyBundle-php/Api/StoreApiInterface.php b/samples/server/petstore/php-symfony/SymfonyBundle-php/Api/StoreApiInterface.php
index 097275dc0a4..4ed7e707986 100644
--- a/samples/server/petstore/php-symfony/SymfonyBundle-php/Api/StoreApiInterface.php
+++ b/samples/server/petstore/php-symfony/SymfonyBundle-php/Api/StoreApiInterface.php
@@ -77,12 +77,12 @@ interface StoreApiInterface
      * @param  int     &$responseCode    The HTTP Response Code
      * @param  array   $responseHeaders  Additional HTTP headers to return with the response ()
      *
-     * @return array|object|null
+     * @return int
      */
     public function getInventory(
         int &$responseCode,
         array &$responseHeaders
-    ): array|object|null;
+    ): int;
 
     /**
      * Operation getOrderById
diff --git a/samples/server/petstore/php-symfony/SymfonyBundle-php/Api/UserApiInterface.php b/samples/server/petstore/php-symfony/SymfonyBundle-php/Api/UserApiInterface.php
index f98deb9fd07..0689aa1f710 100644
--- a/samples/server/petstore/php-symfony/SymfonyBundle-php/Api/UserApiInterface.php
+++ b/samples/server/petstore/php-symfony/SymfonyBundle-php/Api/UserApiInterface.php
@@ -147,14 +147,14 @@ interface UserApiInterface
      * @param  int     &$responseCode    The HTTP Response Code
      * @param  array   $responseHeaders  Additional HTTP headers to return with the response ()
      *
-     * @return array|object|null
+     * @return string
      */
     public function loginUser(
         string $username,
         string $password,
         int &$responseCode,
         array &$responseHeaders
-    ): array|object|null;
+    ): string;
 
     /**
      * Operation logoutUser
diff --git a/samples/server/petstore/php-symfony/SymfonyBundle-php/docs/Api/StoreApiInterface.md b/samples/server/petstore/php-symfony/SymfonyBundle-php/docs/Api/StoreApiInterface.md
index b6ed0824d5c..111a791612e 100644
--- a/samples/server/petstore/php-symfony/SymfonyBundle-php/docs/Api/StoreApiInterface.md
+++ b/samples/server/petstore/php-symfony/SymfonyBundle-php/docs/Api/StoreApiInterface.md
@@ -107,7 +107,7 @@ class StoreApi implements StoreApiInterface
     /**
      * Implementation of StoreApiInterface#getInventory
      */
-    public function getInventory(int &$responseCode, array &$responseHeaders): array|object|null
+    public function getInventory(int &$responseCode, array &$responseHeaders): int
     {
         // Implement the operation ...
     }
diff --git a/samples/server/petstore/php-symfony/SymfonyBundle-php/docs/Api/UserApiInterface.md b/samples/server/petstore/php-symfony/SymfonyBundle-php/docs/Api/UserApiInterface.md
index 2c7e3ba2626..827393e38c5 100644
--- a/samples/server/petstore/php-symfony/SymfonyBundle-php/docs/Api/UserApiInterface.md
+++ b/samples/server/petstore/php-symfony/SymfonyBundle-php/docs/Api/UserApiInterface.md
@@ -351,7 +351,7 @@ class UserApi implements UserApiInterface
     /**
      * Implementation of UserApiInterface#loginUser
      */
-    public function loginUser(string $username, string $password, int &$responseCode, array &$responseHeaders): array|object|null
+    public function loginUser(string $username, string $password, int &$responseCode, array &$responseHeaders): string
     {
         // Implement the operation ...
     }