fix type, update tests in php nextgen (#16758)

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

@@ -142,11 +142,18 @@ public class PhpNextgenClientCodegen extends AbstractPhpCodegen {
             CodegenModel model = m.getModel();
 
             for (CodegenProperty prop : model.vars) {
+                String propType;
                 if (prop.isArray || prop.isMap) {
-                    prop.vendorExtensions.putIfAbsent("x-php-prop-type", "array");
+                    propType = "array";
                 } else {
-                    prop.vendorExtensions.putIfAbsent("x-php-prop-type", prop.dataType);
+                    propType = prop.dataType;
                 }
+
+                if ((!prop.required || prop.isNullable)) { // optional or nullable
+                    propType = "?" + propType;
+                }
+
+                prop.vendorExtensions.putIfAbsent("x-php-prop-type", propType);
             }
 
             if (model.isEnum) {

modules/openapi-generator/src/main/resources/php-nextgen/ObjectSerializer.mustache

@@ -381,9 +381,9 @@ class ObjectSerializer
      * @param string[]|null $httpHeaders   HTTP headers
      * @param string|null   $discriminator discriminator if polymorphism is used
      *
-     * @return object|array|null a single or an array of $class instances
+     * @return mixed a single or an array of $class instances
      */
-    public static function deserialize(mixed $data, string $class, string $httpHeaders = null): object|array|null
+    public static function deserialize(mixed $data, string $class, array $httpHeaders = null): mixed
     {
         if (null === $data) {
             return null;

modules/openapi-generator/src/main/resources/php-nextgen/model_generic.mustache

@@ -367,7 +367,7 @@ class {{classname}} {{#parentSchema}}extends {{{parent}}}{{/parentSchema}}{{^par
      * @deprecated
     {{/deprecated}}
      */
-    public function {{getter}}(): {{^required}}?{{/required}}{{vendorExtensions.x-php-prop-type}}
+    public function {{getter}}(): {{vendorExtensions.x-php-prop-type}}
     {
         return $this->container['{{name}}'];
     }
@@ -382,7 +382,7 @@ class {{classname}} {{#parentSchema}}extends {{{parent}}}{{/parentSchema}}{{^par
      * @deprecated
     {{/deprecated}}
      */
-    public function {{setter}}({{^required}}?{{/required}}{{vendorExtensions.x-php-prop-type}} ${{name}}): static
+    public function {{setter}}({{vendorExtensions.x-php-prop-type}} ${{name}}): static
     {
         {{#isNullable}}
         if (is_null(${{name}})) {

samples/client/echo_api/php-nextgen/src/ObjectSerializer.php

@@ -391,9 +391,9 @@ class ObjectSerializer
      * @param string[]|null $httpHeaders   HTTP headers
      * @param string|null   $discriminator discriminator if polymorphism is used
      *
-     * @return object|array|null a single or an array of $class instances
+     * @return mixed a single or an array of $class instances
      */
-    public static function deserialize(mixed $data, string $class, string $httpHeaders = null): object|array|null
+    public static function deserialize(mixed $data, string $class, array $httpHeaders = null): mixed
     {
         if (null === $data) {
             return null;

samples/client/petstore/php-nextgen/OpenAPIClient-php/src/ObjectSerializer.php

@@ -390,9 +390,9 @@ class ObjectSerializer
      * @param string[]|null $httpHeaders   HTTP headers
      * @param string|null   $discriminator discriminator if polymorphism is used
      *
-     * @return object|array|null a single or an array of $class instances
+     * @return mixed a single or an array of $class instances
      */
-    public static function deserialize(mixed $data, string $class, string $httpHeaders = null): object|array|null
+    public static function deserialize(mixed $data, string $class, array $httpHeaders = null): mixed
     {
         if (null === $data) {
             return null;

samples/client/petstore/php-nextgen/OpenAPIClient-php/test/AuthTest.php

@@ -33,7 +33,7 @@ class AuthTest extends TestCase
 
         $fakeHttpClient = new FakeHttpClient();
         $api = new PetApi($fakeHttpClient, $authConfig);
-        $api->addPet(new Pet());
+        $api->addPet(new Pet(array('name' => 'testing', 'photo_urls' => array('http://a.com'))));
 
         $headers = $fakeHttpClient->getLastRequest()->getHeaders();
 

samples/client/petstore/php-nextgen/OpenAPIClient-php/test/NullableTest.php

@@ -20,10 +20,16 @@ class NullableTest extends TestCase
         $name->setName(1);
         $this->assertEquals(1, $name->getName(), 'Non-nullable property can be set and retains its value');
 
-        $this->expectException(InvalidArgumentException::class);
+        // comment out below as strict type is now enabled
-        $this->expectExceptionMessage('non-nullable name cannot be null');
+        //$this->expectException(InvalidArgumentException::class);
+        //$this->expectExceptionMessage('non-nullable name cannot be null');
 
+        $this->expectException(TypeError::class);
+        $this->expectExceptionMessage('must be of type int, null given');
+
+        //Failed asserting that exception of type "TypeError" matches expected exception "InvalidArgumentException". Message was: "OpenAPI\Client\Model\Name::setName(): Argument #1 ($name) must be of type int, null given, called in /Users/williamcheng/Code/openapi-generator7/samples/client/petstore/php-nextgen/OpenAPIClient-php/test/NullableTest.php on line 26" at
         $name->setName(null);
+
     }
 
     public function testNullableobject(): void

samples/client/petstore/php-nextgen/OpenAPIClient-php/test/PetApiTest.php

@@ -136,6 +136,7 @@ class PetApiTest extends TestCase
         $updatedPet->setId($petId);
         $updatedPet->setName('updatePet');
         $updatedPet->setStatus('pending');
+        $updatedPet->setPhotoUrls(array('http://a.com'));
         $result = $this->api->updatePet($updatedPet);
         $this->assertNull($result);
 
@@ -186,6 +187,7 @@ class PetApiTest extends TestCase
         $newPet = new Model\Pet;
         $newPet->setId($new_pet_id);
         $newPet->setName("PHP Unit Test 2");
+        $newPet->setPhotoUrls(array("http://a.com"));
 
         // add a new pet (model)
         $add_response = $this->api->addPet($newPet);
@@ -196,6 +198,7 @@ class PetApiTest extends TestCase
         $response = $this->api->getPetById($new_pet_id);
         $this->assertSame($new_pet_id, $response->getId());
         $this->assertSame('PHP Unit Test 2', $response->getName());
+        $this->assertSame(array("http://a.com"), $response->getPhotoUrls());
     }
 
     /*

samples/client/petstore/php-nextgen/OpenAPIClient-php/test/ServerVariablesInOperationTest.php

@@ -22,6 +22,8 @@ class ServerVariablesInOperationTest extends TestCase
         $this->fakeHttpClient = new FakeHttpClient();
         $this->api = new Api\PetApi($this->fakeHttpClient);
         $this->pet = new Model\Pet();
+        $this->pet->setName("something");
+        $this->pet->setPhotoUrls(array("https://a.com"));
     }
 
     public function testServerVariablesInOperation(): void

samples/client/petstore/php-nextgen/OpenAPIClient-php/test/StoreApiTest.php

@@ -30,6 +30,7 @@ class StoreApiTest extends TestCase
         $pet = new Pet();
         $pet->setId($id);
         $pet->setName('PHP Unit Test');
+        $pet->setPhotoUrls(array('http://a.com'));
         $pet->setStatus('available');
         // new tag
         $tag = new Tag();