Php 更改foreach中的键名

我想编辑一个数组键名，将其从日期更改为数字顺序id，并将日期放入数组中

  [entries] => Array
        (
            [2015-07-19] => Array
                (
                    [value] => 14.8
                )

            [2015-07-18] => Array
                (
                    [value] => 14.9
                )

进入

您是否尝试过：

$entries = array(
     '2015-07-19' => array(
          'value' => 14.8
     ),
     '2015-07-18' => array(
          'value' => 14.9
     )
);
$result = array();
foreach ($entries as $key => $value) {
     $result['entries'][] = array('date'=> $key, 'value' => $value['value']);
}
print_r($result);

我的建议（不创建新阵列）：

---

你试过什么来达到这个目的吗？

$entries = array(
     '2015-07-19' => array(
          'value' => 14.8
     ),
     '2015-07-18' => array(
          'value' => 14.9
     )
);
$result = array();
foreach ($entries as $key => $value) {
     $result['entries'][] = array('date'=> $key, 'value' => $value['value']);
}
print_r($result);

$entries = array(
    '2015-07-19' => array ('value' => 14.8),
    '2015-07-18' => array ('value' => 14.9),        
);

foreach ($entries as $key => &$entry) 
{
    $entry['date'] = $key;
}
unset($entry);

$entries = array_values($entries);