[PHP] error when deserializing enums #4032 (#4886)

* fixed enum template; added enum handling to ObjectSerializer

* regenerated templates

* improved InvalidArgumentException message

* regenerated sample client

* added value check of OuterEnum during sanitization

* regenerated samples

samples/client/petstore/php/SwaggerClient-php/lib/Model/EnumClass.php

@@ -29,8 +29,6 @@
 
 namespace Swagger\Client\Model;
 
-use \ArrayAccess;
-
 /**
  * EnumClass Class Doc Comment
  *
@@ -40,11 +38,25 @@ use \ArrayAccess;
  * @link        https://github.com/swagger-api/swagger-codegen
  */
 class EnumClass {
+    /**
+     * Possible values of this enum
+     */
     const ABC = '_abc';
     const EFG = '-efg';
     const XYZ = '(xyz)';
     
-
-    
+    /**
+     * Gets allowable values of the enum
+     * @return string[]
+     */
+    public static function getAllowableEnumValues()
+    {
+        return [
+            self::ABC,
+            self::EFG,
+            self::XYZ,
+        ];
+    }
 }
 
+

samples/client/petstore/php/SwaggerClient-php/lib/Model/OuterEnum.php

@@ -29,8 +29,6 @@
 
 namespace Swagger\Client\Model;
 
-use \ArrayAccess;
-
 /**
  * OuterEnum Class Doc Comment
  *
@@ -40,11 +38,25 @@ use \ArrayAccess;
  * @link        https://github.com/swagger-api/swagger-codegen
  */
 class OuterEnum {
+    /**
+     * Possible values of this enum
+     */
     const PLACED = 'placed';
     const APPROVED = 'approved';
     const DELIVERED = 'delivered';
     
-
-    
+    /**
+     * Gets allowable values of the enum
+     * @return string[]
+     */
+    public static function getAllowableEnumValues()
+    {
+        return [
+            self::PLACED,
+            self::APPROVED,
+            self::DELIVERED,
+        ];
+    }
 }
 
+