[php Symfony] fix return type for non json/xml api

This fixes the generated returned type of controller methods for
endpoint with a response declared like

    content:
      text/plain:
        schema:
          type: <boolean|string|integer|number>

or for

    content:
      image/png:
        schema:
          type: string
          format: binary

Without this commit the generated method *had to* return a value that
matched "array|object|null", which does not work in this case.
This commit makes it possible to return the proper type.

Author: gturri

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PhpSymfonyServerCodegen.java

@@ -417,7 +417,17 @@ public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<Mo
                 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");

samples/server/petstore/php-symfony/SymfonyBundle-php/Api/StoreApiInterface.php

@@ -77,12 +77,12 @@ public function deleteOrder(
      * @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

samples/server/petstore/php-symfony/SymfonyBundle-php/Api/UserApiInterface.php

@@ -147,14 +147,14 @@ public function getUserByName(
      * @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

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 ...
     }

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 ...
     }