PHP - 将新对象添加到每个对象数组中

Question

考虑一下 PHP 中的这个对象数组： array:2 [      0 => array:4 [        "Row_Id" => 256        "Start_Date" => "2020-05-16"        "account_code" => ""        "caller_number" => "452"        ]          1 => array:4 [        "Row_Id" => 257        "Start_Date" => "2020-05-16"        "account_code" => ""        "caller_number" => "42"        ]      2 => array:4 [        "Row_Id" => 258        "Start_Date" => "2020-05-16"        "account_code" => ""        "caller_number" => "428"        ]    ]我想添加"callee_number:100"每个数组，所以我的输出应该如下所示：     array:2 [          0 => array:5 [            "Row_Id" => 256            "Start_Date" => "2020-05-16"            "account_code" => ""            "caller_number" => "452"            "callee_number" => "100"            ]                  1 => array:5 [            "Row_Id" => 257            "Start_Date" => "2020-05-16"            "account_code" => ""            "caller_number" => "42"            "callee_number" => "100"            ]          2 => array:5 [            "Row_Id" => 258            "Start_Date" => "2020-05-16"            "account_code" => ""            "caller_number" => "428"            "callee_number" => "100"            ]        ]我已将上述输入数组放入 $get 变量中。现在我调用array_push附加callee_number到每个数组：  array_push($get,[   'callee_number':'100'    ]);也尝试使用array_merge但callee_number没有被附加。我怎样才能做到这一点？

Answer 1

给定以下数组：

$array = [

    [

        "Row_Id" => 256,

        "Start_Date" => "2020-05-16",

        "account_code" => "",

        "caller_number" => "452",

    ],

    [

        "Row_Id" => 257,

        "Start_Date" => "2020-05-16",

        "account_code" => "",

        "caller_number" => "42",

    ],

    [

        "Row_Id" => 258,

        "Start_Date" => "2020-05-16",

        "account_code" => "",

        "caller_number" => "428",

    ],

];

原生 PHP

$array = array_map(function ($item) { return $item + ['callee_number' => 100]; }, $array);

使用集合

$array = collect($array)->map(function ($item) { return $item + ['callee_number' => 100]; })->toArray();

使用 PHP 7.4 简写

$array = array_map(fn($item) => $item + ['callee_number' => 100], $array);

// Or

$array = collect($array)->map(fn($item) => $item + ['callee_number' => 100])->toArray();

Answer 2

要添加或修改每个子数组中的元素，您可以这样做：

foreach ($get as &$g) {

  $g["callee_number"] = 100;

}

或这个：

for ($c = 0; $c < count($get); $c++) {

$get[$c]["callee_number"] = 100;

}