PHP:在多维数组中找到相同的键并合并结果

Question

我有一个多维数组,如下所示:

$array = (
    [0] => array (
        ['WS'] => array(
             [id] => 2,
             [name] => 'hello'
             )
        )
    ), 
    [1] => array (
        ['SS'] => array(
             [id] => 1,
             [name] => 'hello2'
             )
        )
    ),
    [2] => array (
        ['WS'] => array(
             [id] => 5,
             [name] => 'helloAGAIN'
             )
        )
)

如您所见,$ array [0]和$ array [2]具有相同的密钥[WS].我需要一个函数来找到那些"相同的键".然后我将这两个数组合并为一个.FE

$array =
(
    [0] => array 
        (
            ['WS'] => array
                (
                     [0] => array
                         (
                             [id] => 2,
                             [name] => 'hello'
                         ),
                     [1] => array
                         (
                            [id] => 5,
                            [name] => 'helloAGAIN'
                         )
                )
        ),
    [1] => array 
         (
             ['SS'] => array
                 (
                     [0] => array
                         (
                              [id] => 1,
                              [name] => 'hello2'
                         )
                 )
         )
    )

希望你们明白我的问题.招呼

Answer 1

function group_by_key ($array) {
  $result = array();
  foreach ($array as $sub) {
    foreach ($sub as $k => $v) {
      $result[$k][] = $v;
    }
  }
  return $result;
}

看它工作