Releasing v4.15.1.

.github/workflows/phpunit.yml

@@ -0,0 +1,40 @@
+name: PHPUnit
+
+on:
+  pull_request:
+    branches: ["**"]
+  push:
+    branches: ["master"]
+
+permissions:
+  contents: read
+
+jobs:
+  phpunit:
+    name: Run PHPUnit
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        php: ["8.4"]
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php }}
+          tools: composer
+          coverage: none
+
+      - name: Validate composer.json
+        run: composer validate --no-interaction
+
+      - name: Install dependencies
+        run: composer install --no-interaction --no-progress --prefer-dist
+
+      - name: Run tests
+        run: vendor/bin/phpunit

CHANGELOG.md

@@ -1,3 +1,10 @@
+### v4.15.1 (2026-01-19)
+* * * 
+
+### Regression Bug Fixes:
+* Fix list fields to accept JSON objects with explicit numeric keys. [Reference](https://github.com/chargebee/chargebee-php/pull/116#issuecomment-3715071348).
+* Add `PHPUnit` test case coverage workflow on pull request.
+
 ### v4.15.0 (2026-01-16)
 * * * 
 

src/ValueObjects/Encoders/URLFormEncoder.php

@@ -32,7 +32,7 @@ private static function serialize($value, $prefix = null, $idx = null, $jsonKeys
                 $key = (!is_null($prefix) ? $prefix : '') .
                     (!is_null($prefix) ? '[' . $usK . ']' : $usK) .
                     (!is_null($idx) ? '[' . $idx . ']' : '');
-                $serialized[$key] = is_string($v)?$v:json_encode($v, JSON_FORCE_OBJECT);
+                $serialized[$key] = is_string($v) ? $v : json_encode((is_array($v) && $v === []) ? (object)[] : $v);
             } else if (is_array($v) && !is_int($k)) {
                 $tempPrefix = (!is_null($prefix)) ? $prefix . '[' . Util::toUnderscoreFromCamelCase($k) . ']' : Util::toUnderscoreFromCamelCase($k);
                 $serialized = array_merge($serialized, self::serialize($v, $tempPrefix, null, $jsonKeys, $level + 1));

src/Version.php

@@ -4,7 +4,7 @@
 
 final class Version
 {
-	const VERSION = '4.15.0';
+	const VERSION = '4.15.1';
 }
 
 ?>

tests/ValueObjects/Encoder/URLFormEncoderTest.php

@@ -189,4 +189,32 @@ public function testEncodeParamsWithAEmptyJsonAttribute(): void {
         $this->assertIsString($encoded);
         $this->assertSame("first_name=John&last_name=Doe&meta_data=%7B%7D", $encoded);
     }
+
+    /** Convert params to URL-form encoding. Do not transform json arrays to array based indexing. it should not ItemPriceId { "0" => "some_price_id"}  */
+    /** id=foo&name=foo&discount_percentage=10&apply_on=each_specified_item&item_constraints[constraint][0]=specific&item_constraints[item_type][0]=plan&item_constraints[item_price_ids][0]=["some_price_id"] */
+    public function testEncodeParamsShouldNotUseArrayBasedIndexingForJsonArray(): void
+    {
+        $params = [
+            'id' => 'foo',
+            'name' => 'foo',
+            'discount_percentage' => 10.0,
+            'apply_on' => 'each_specified_item',
+            'item_constraints' => [
+                [
+                    'constraint' => 'specific',
+                    'item_type' => 'plan',
+                    'item_price_ids' => [
+                        'some_price_id',
+                    ],
+                ],
+            ],
+        ];
+
+        $json_keys = [
+            "itemPriceIds" => 1
+        ];
+        $encoded = URLFormEncoder::encode($params, $json_keys);
+        $this->assertIsString($encoded);
+        $this->assertSame("id=foo&name=foo&discount_percentage=10&apply_on=each_specified_item&item_constraints%5Bconstraint%5D%5B0%5D=specific&item_constraints%5Bitem_type%5D%5B0%5D=plan&item_constraints%5Bitem_price_ids%5D%5B0%5D=%5B%22some_price_id%22%5D", $encoded);
+    }
 }