正在分析未知深度的嵌套数组

我从第三方获得json文件，具有类似于以下的可变深度的键：值对：***编辑了JSON以澄清将在mysqldb中使用的表名。KEY是表中的列，Value是数据。从json到json，列名都是静态的。

   {                         
   "Key1": "Value1",  //non-nested key:value go to default table                     
   "Key2": "Value2",                      
   "Key3": "Value3",                                 
   "Table1": [],                      
   "Table2": [{                      
        "Key1": "Value1",                  
        "Key2": "Value2",                  
        "Key3": "Value3"},
        {"Key1": "Value1",                  
         "Key2": "Value2",                  
         "Key3": "Value3"}],
    "Table3": [
          {"Key1": "Value1",                  
            "Key2": "Value2",                  
            "Key3": "Value3"},
             {"Table4": [
                   {"Key1": "Value1",              
                    "Key2": "Value2",              
                    "Key3": "Value3"},
                {"Table5": [
                           {"Key1": "Value1",          
                            "Key2": "Value2",          
                            "Key3": "Value3"}]
                 }]
           }]    
     }

**此示例通过JSON验证

对于初始键：值对（不在嵌套数组中），我需要设置一个表名，将所有非嵌套值插入到表中。对于嵌套的Key:Value对，需要将表名设置为Array键，即Array1、Array2、Array3等。其中嵌套的Key是列名，Value是数据。

我一直在尝试使用RecursiveIteratorIterator重申数组（我知道这比数组的嵌套foreach处理有一些速度优势），但不管怎样。。我在分离嵌套数组和提取底层Key:Value时遇到了问题。

我正在尝试这个：

$iterator = new RecursiveIteratorIterator(
    new RecursiveArrayIterator($data1),
    RecursiveIteratorIterator::SELF_FIRST
);
foreach ($iterator as $key=>$value){
        if (!is_array($value)){
        //echo $key." KEY is not an array <br>";
        }
        if(is_array($value)){
            //echo $key." KEY is an array <br>";
                foreach($value as $key1=>$val1){
                    if (is_array($val1)){
                    //echo $key1."KEY 1 is an array<br>";  
                }
            }    
        }
    }    

更新

用户@olibiaz提出了一个几乎100%正确的解决方案：

function toto(array $input, $tableName = '')
{
    foreach ($input as $key => $element) {
      if (is_array($element)) {
         toto($element, $key);
      } else {
          if ($tableName === '') {
             // here is the non nested elelement,
             // you can choose the tableName you want
             $tableName = 'NonNestedTableName';
          }
          // place your insert here or whatever you want
          // here, the tablename is the index of the nested array
          echo "TableName: $tableName, Key: $key, Data: $element 'n";
      }
    }
}

以下是我在JSON数据上运行上述代码时得到的输出：

TableName: project, Key: Key1, Data: Value1 // "project" used for non-nested
TableName: project, Key: Key2, Data: Value2 
TableName: project, Key: Key3, Data: Value3
TableName: 0, Key: Key1, Data: Value1  // Tablename needs to be "Array2"
TableName: 0, Key: Key2, Data: Value2  // for these 3 data sets
TableName: 0, Key: Key3, Data: Value3 
TableName: 1, Key: Key1, Data: Value1  // Tablename needs to be "Array2"
TableName: 1, Key: Key2, Data: Value2 
TableName: 1, Key: Key3, Data: Value3 
TableName: 0, Key: Key1, Data: Value1  // Tablename needs to be "Array3"
TableName: 0, Key: Key2, Data: Value2 
TableName: 0, Key: Key3, Data: Value3  
TableName: 0, Key: Key1, Data: Value1  // Tablename needs to be "Array4"
TableName: 0, Key: Key2, Data: Value2 
TableName: 0, Key: Key3, Data: Value3 
TableName: 0, Key: Key1, Data: Value1  // Tablename needs to be "Array5"
TableName: 0, Key: Key2, Data: Value2 
TableName: 0, Key: Key3, Data: Value3

但是，我需要使用数组的Key名称，而不是使用表名称的数字索引。也许olibiaz或其他用户对如何实现这一点有建议？