PHP JSON解析格式

我正在使用PHP解析JSOn。现在我的json工作正常，我只想格式化我的输出。我已经创建了一个rootobj数组，我在其中插入了一些属性，然后在rootobj中有另一个数组，但我希望内部数组属性位于根元素中，这是我的代码

  $rootObj = array(
     MainEvent' => $event_value['MainEvent'],
    'OutcomeDateTime' => $formatteddate->format('Y-m-d H:i:s'),
    'OutcomeDateTimeUTC' => gmdate('Y-m-d H:i:s', strtotime($event_value['OutcomeDateTime']))
     );
    //inner array
    foreach($event_value['Competitors']['Competitors'] as $compKey => $compVal) {
    $teamName = array_key_exists('Team',$compVal) ? $compVal['Team'] :  $compVal['Name'];
    $win = $compVal['Win'];
    //Creating Competitor Array
     $CompetitorArray[] = array(
     "Team" => $teamName,
     "Win" => $win,
     );
     }
     $rootObj ['Competitors'] = $CompetitorArray;

这是我输出的一个示例

    ...
     "MainEvent": "West Perth v Swan Districts",
      "OutcomeDateTime": "2014-07-05 16:05:00",
       "OutcomeDateTimeUTC": "2014-07-05 06:05:00",
      "Competitors": [
        {
          "Team": "West Perth",
          "Win": "1.57"
        },
        {
          "Team": "Swan Districts",
          "Win": "2.35"
        }
      ]
    },
    {
      "MainEvent": "East Fremantle v Perth",
      "OutcomeDateTime": "2014-07-05 16:05:00",
       "OutcomeDateTimeUTC": "2014-07-05 06:05:00",
      "Competitors": [
        {
          "Team": "East Fremantle",
          "Win": "1.22"
        },
        {
          "Team": "Perth",
          "Win": "4.15"
        }
      ]
    },
    {
      "MainEvent": "East Perth v Peel Thunder",
      "OutcomeDateTime": "2014-07-05 16:05:00",
       "OutcomeDateTimeUTC": "2014-07-05 06:05:00",
      "Competitors": [
        {
          "Team": "East Perth",
          "Win": "1.12"
        },
        {
          "Team": "Peel Thunder",
          "Win": "6.00"
        }
      ]
    }
  ],
  .....

但是我希望我的输出是这样的

 ...
 "MainEvent": "West Perth v Swan Districts",
  "OutcomeDateTime": "2014-07-05 16:05:00",
   "OutcomeDateTimeUTC": "2014-07-05 06:05:00",

      "Team1": "West Perth",
      "Win1": "1.57",

      "Team2": "Swan Districts",
      "Win2": "2.35"


},
{
  "MainEvent": "East Fremantle v Perth",
  "OutcomeDateTime": "2014-07-05 16:05:00",
   "OutcomeDateTimeUTC": "2014-07-05 06:05:00",

      "Team3": "East Fremantle",
      "Win3": "1.22",

      "Team4": "Perth",
      "Win4": "4.15"
},
{
  "MainEvent": "East Perth v Peel Thunder",
  "OutcomeDateTime": "2014-07-05 16:05:00",
   "OutcomeDateTimeUTC": "2014-07-05 06:05:00",

      "Team5": "East Perth",
      "Win5": "1.12",

      "Team6": "Peel Thunder",
      "Win6": "6.00"
}

],，

 // outside of scope
 $countTeam=0;

 ...



 foreach($event_value['Competitors']['Competitors'] as $compKey => $compVal) {
   $countTeam++;
   $teamName = array_key_exists('Team',$compVal) ? $compVal['Team'] :  $compVal['Name'];
   $win = $compVal['Win'];
  //Insert to root object
   $rootObj["Team".$countTeam] = $teamName;
   $rootObj["Win".$countTeam] = $win;

}