From 73a2d09b57a2828a8d978645901fbe282093322e Mon Sep 17 00:00:00 2001
From: Hannes Lau <SomeBdyElse@users.noreply.github.com>
Date: Wed, 1 May 2024 14:54:14 +0200
Subject: [PATCH] feat(php-nextgen): allow to serialize collections of enums

When serializing collections, make sure to serialize the members of the collection first, before applying http_build_query or implode.
---
 .../src/main/resources/php-nextgen/ObjectSerializer.mustache    | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/modules/openapi-generator/src/main/resources/php-nextgen/ObjectSerializer.mustache b/modules/openapi-generator/src/main/resources/php-nextgen/ObjectSerializer.mustache
index 5970d93dc958..b2d1cf65835b 100644
--- a/modules/openapi-generator/src/main/resources/php-nextgen/ObjectSerializer.mustache
+++ b/modules/openapi-generator/src/main/resources/php-nextgen/ObjectSerializer.mustache
@@ -358,6 +358,8 @@ class ObjectSerializer
      */
     public static function serializeCollection(array $collection, string $style, bool $allowCollectionFormatMulti = false): string
     {
+        $collection = array_map([self::class, 'sanitizeForSerialization'], $collection);
+
         if ($allowCollectionFormatMulti && ('multi' === $style)) {
             // http_build_query() almost does the job for us. We just
             // need to fix the result of multidimensional arrays.