php中數組中某個索引值為空白的時分，不加入到數組

php中數組中某個索引值為空白的時候，不加入到數組。

$data = array();
if (!empty($_POST['field_id'])) {
foreach ($_POST['field_id'] as $k => $v) {
$data[] = array(
'field_id' => $v, 
'choice' => isset($_POST['choice'][$k]) ? $_POST['choice'][$k] : '', 
'uid' => $_POST['uid'],
'game_id' => $_POST['game_id'],
'server_id' => $_POST['server_id']
);  
}   
}  

這是我迴圈格式化的地方，下面是輸出的數組資料

Array
(
    [0] => Array
        (
            [field_id] => 1
            [choice] => 0
            [uid] => 110000110
            [game_id] => 2
            [server_id] => 2
        )

    [1] => Array
        (
            [field_id] => 2
            [choice] => 0
            [uid] => 110000110
            [game_id] => 2
            [server_id] => 2
        )

    [2] => Array
        (
            [field_id] => 3
            [choice] => 1
            [uid] => 110000110
            [game_id] => 2
            [server_id] => 2
        )

)

當choiece等於空的時候 [choice] =>沒有值的時候不加入到data數組裡面怎麼實現呢？

------解決思路----------------------

$data = array();
if (!empty($_POST['field_id'])) {
   foreach ($_POST['choice'] as $k => $v) {
      if($v == '') continue;
      $data[] = array(
          'field_id' => $_POST['field_id'][$k], 
          'choice' => $_POST['choice'][$k], 
          'uid' => $_POST['uid'],
          'game_id' => $_POST['game_id'],
          'server_id' => $_POST['server_id']
      );  
  }   
}

