PHP复杂嵌套数组过滤：基于深层子属性值移除父级元素

[
   {
      "id": 6834,
      "contract_id": 13,
      "schedule_column_values": [ // 目标过滤的“祖父级”元素所在数组
         {
            "id": 34001,
            "field_value": {
               "id": 324241,
               "value": 10,
               "field": { // 包含目标过滤条件“signature”的子对象
                  "id": 1,
                  "signature": "ios"
               }
            }
         },
         {
            "id": 34001,
            "field_value": {
               "id": 324241,
               "value": 10,
               "field": {
                  "id": 1,
                  "signature": "android" // 匹配此签名则移除其祖父级元素
               }
            }
         }
      ]
   }
]

[
  {
    "id": 6834,
    "contract_id": 13,
    "schedule_column_values": [
      {
        "id": 34001,
        "field_value": {
          "id": 324241,
          "value": 10,
          "field": {
            "id": 1,
            "signature": "ios"
          }
        }
      }      
    ]
  }
]

<?php

// 示例数据，模拟从 JSON 解析后的 PHP 对象结构
$data = [
   (object)[
      "id" => 6834,
      "contract_id" => 13,
      "schedule_column_values" => [
         (object)[
            "id" => 34001,
            "field_value" => (object)[
               "id" => 324241,
               "value" => 10,
               "field" => (object)[
                  "id" => 1,
                  "signature" => "ios"
               ]
            ]
         ],
         (object)[
            "id" => 34001,
            "field_value" => (object)[
               "id" => 324241,
               "value" => 10,
               "field" => (object)[
                  "id" => 1,
                  "signature" => "android"
               ]
            ]
         ]
      ]
   ]
];

$filtered_data = [];
$target_signature = 'android'; // 定义要过滤的目标签名

foreach ($data as $grandparent_object) {
    // 使用 array_filter 过滤 schedule_column_values 数组
    $filtered_schedules = array_filter(
        $grandparent_object->schedule_column_values, 
        function ($item) use ($target_signature) {
            // 过滤条件：如果 signature 不等于目标签名，则保留该元素
            // 注意：这里假设 field_value 和 field 始终存在
            return $item->field_value->field->signature !== $target_signature;
        }
    );

    // 克隆祖父级对象，以避免修改原始数据
    $altered_grandparent_object = clone $grandparent_object;

    // 将过滤后的 schedule_column_values 赋值给克隆对象
    // array_values() 用于重新索引数组，确保键是连续的数字索引
    $altered_grandparent_object->schedule_column_values = array_values($filtered_schedules); 

    // 将处理后的祖父级对象添加到结果数组
    $filtered_data[] = $altered_grandparent_object;
}

// 打印过滤后的数据，以便验证
// echo json_encode($filtered_data, JSON_PRETTY_PRINT);

/* 预期输出:
[
  {
    "id": 6834,
    "contract_id": 13,
    "schedule_column_values": [
      {
        "id": 34001,
        "field_value": {
          "id": 324241,
          "value": 10,
          "field": {
            "id": 1,
            "signature": "ios"
          }
        }
      }      
    ]
  }
]
*/