Laravel 6.18按ids合并2列表

Question

我需要根据I合并2个列表，并得到一个结果，这个结果将在结果上添加列，我只是在添加这个文本，stackoverflow告诉我要添加更多的文本

    array1 = [
 {
  id: 1,
  firstName: "paul1",
},
{
  id: 2,
  firstName: "paul2",
},
{
  id: 3,
  firstName: "paul3",
}]

    array2 = [
 {
  id: 1,
  lastName: "jackson1"
},
{
  id: 3,
  lastName: "jackson3"
}]

合并结果将是

result = [
 {
  id: 1,
  firstName: "paul1",
  lastName: "jackson1"
},
{
  id: 2,
  firstName: "paul2",
},
{
  id: 3,
  firstName: "paul3",
  lastName: "jackson3"
}]

Answer 1

正如我在注释“您可以在array_combine中使用array_combine”中所说的，假设您有以下两个数组：

$array1 = array([
            'id'=>1,
            "firstName"=> "paul1",
        ], [
            'id'=>3,
            "firstName"=> "paul `has no last name`3",
        ], [
            'id'=>2,
            "firstName"=> "paul2",
        ],);

$array2 = array([
            'id'=>1,
            "lastName"=> "jackson1",
        ], [
            'id'=>2,
            "lastName"=> "jackson2",
        ], [
            'id'=>5,
            "lastName"=> "jackson `has no first name`5",
        ],);

所以你可以像这样按id合并它们：

$marged = array_replace_recursive(
            array_combine(array_column($array1, "id"), $array1),
            array_combine(array_column($array2, "id"), $array2)
            )

注意:您可以用您想要的键更改"id“

输出应该是这样的：

array:4 [▼
  1 => array:3 [▼
    "id" => 1
    "firstName" => "paul1"
    "lastName" => "jackson1"
  ]
  3 => array:2 [▼
    "id" => 3
    "firstName" => "has no last name3"
  ]
  2 => array:3 [▼
    "id" => 2
    "firstName" => "paul2"
    "lastName" => "jackson2"
  ]
  5 => array:2 [▼
    "id" => 5
    "lastName" => "jackson5"
  ]
]

Answer 2

试试这个：

$result = $array1;
foreach ($array1 as $key => $value) {
    $match = collect($array2)->firstWhere('id', $value['id']);
    $result[$key]['lastName'] = $match ? $match['lastName'] : '';
}