通过值对数组进行分组

Question

我有一个像这样的数组

数组 (

[1] => Array
    (
        [name] => 123
        [id] => 105740727
        [email] =>fghfhfh
        [phrases_relevant] => 123
        [searches_id] => 105740727
    )

[2] => Array
    (
        [name] => porshe
        [id] => 105713889
        [email] => fghfghf
        [phrases_relevant] => porshe
        [searches_id] => 105713889
    )

 [3] => Array
    (
        [name] => porshe
        [id] => 105713889
        [email] => fghfghf
        [phrases_relevant] => merce
        [searches_id] => 105713889
    )

我需要通过值对这个组进行分组。输出数组应如下所示。 第二个维度和第三个维度具有相同的 search_id

  [0] => Array
    (
        [email] => fghfghf
        [projects]=>
              [porshe] => [porshe, merce]
  [1] => ...

编辑；

我尝试过；

    foreach ($results as $key => $result) {
         $testArray[]['projects'][$result['name']][] = $result['phrases_relevant'];

但这会插入一个短语；

Answer 1

您需要先按

searches_id

排序，然后应用循环，

function sortByOrder($a, $b)
{
    return $a['searches_id'] - $b['searches_id'];
}
usort($myArray, 'sortByOrder');
foreach ($myArray as $key => $value) {
    $result[$value['searches_id']]['email']      = $value['email'];
    $result[$value['searches_id']]['projects'][] = $value['phrases_relevant'];
}
$result = array_values($result); // reset keys used for array generation

工作演示。

Answer 2

您可以使用

foreach

$res = [];
foreach($arr as $key => $value){

array_key_exists($value['id'], $res) ?
    ($res[$value['id']]['phrases_relevant'] = $res[$value['id']]['phrases_relevant'].','.$value['phrases_relevant'])
:
($res[$value['id']] = ['email' => $value['email'],'phrases_relevant' => $value['phrases_relevant']]);
}
print_r(array_values($res))

现场演示

Answer 3

通过在无体循环中使用对称数组解构语法，您可以仅隔离所需的行值并将数据推送到组中。 循环完成后，调用

array_values()

重新索引结果数组。 演示

foreach (
    $array as [
        'id' => $id,
        'name' => $name,
        'email' => $result[$id]['email'],
        'phrases_relevant' => $result[$id]['projects'][$name][]
    ]
);
var_export(array_values($result));

输出：

array (
  0 => 
  array (
    'email' => 'fghfhfh',
    'projects' => 
    array (
      123 => 
      array (
        0 => 123,
      ),
    ),
  ),
  1 => 
  array (
    'email' => 'fghfghf',
    'projects' => 
    array (
      'porshe' => 
      array (
        0 => 'porshe',
        1 => 'merce',
      ),
    ),
  ),
)