Question

我有一个多维数组，我只想转换多维数组中的特定键。

这是示例多维数组：

array (
    0 => 
    array (
        'id' => 0,
        'payment_method' => 2,
        'amount' => 100,
        'check_no' => '',
        'remarks' => '',
        'check_date' => '2020-01-13',
        'bank_account_id' => NULL,
        'surcharge_id' => NULL,
        'card_number' => '',
        'customer_name' => '',
        'merchant_number' => '',
        'batch_number' => '',
        'approval_number' => '',
        'other_reference_1' => '',
        'other_reference_3' => '',
        'other_reference_2' => '',
        'based_amount' => 0,
        'actual_amount' => 0,
        'total_charge' => 0,
        'transaction_id' => 47,
        'transaction_status' => 0,
    ),
    1 => 
    array (
        'id' => 0,
        'payment_method' => 2,
        'amount' => 150,
        'check_no' => '',
        'remarks' => '',
        'check_date' => '2020-01-13',
        'bank_account_id' => NULL,
        'surcharge_id' => NULL,
        'card_number' => '',
        'customer_name' => '',
        'merchant_number' => '',
        'batch_number' => '',
        'approval_number' => '',
        'other_reference_1' => '',
        'other_reference_3' => '',
        'other_reference_2' => '',
        'based_amount' => 0,
        'actual_amount' => 0,
        'total_charge' => 0,
        'transaction_id' => 47,
        'transaction_status' => 0,
    ),
    2 => 
    array (
        'id' => 0,
        'payment_method' => 2,
        'amount' => 100,
        'check_no' => '',
        'remarks' => '',
        'check_date' => '2020-01-13',
        'bank_account_id' => NULL,
        'surcharge_id' => NULL,
        'card_number' => '',
        'customer_name' => '',
        'merchant_number' => '',
        'batch_number' => '',
        'approval_number' => '',
        'other_reference_1' => '',
        'other_reference_3' => '',
        'other_reference_2' => '',
        'based_amount' => 0,
        'actual_amount' => 0,
        'total_charge' => 0,
        'transaction_id' => 47,
        'transaction_status' => 0,
    )
)

我只想要特定的键进行转换，例如，我只想要transaction_id，transaction_status，金额等。

那么预期的输出将是：

array (
    0 =>
    array (
        'transaction_id' => 47,
        'transaction_status' => 0,
        'amount' => 100
    ),
    1 =>
    array (
        'transaction_id' => 47,
        'transaction_status' => 0,
        'amount' => 100
    ),
    2 =>
    array (
        'transaction_id' => 47,
        'transaction_status' => 0,
        'amount' => 100
    )
)

谢谢！

Answer 1

使用forecah这样循环是可能的。

<?php 
$a = array (
    0 => 
    array (
        'id' => 0,
        'payment_method' => 2,
        'amount' => 100,
        'check_no' => '',
        'remarks' => '',
        'check_date' => '2020-01-13',
        'bank_account_id' => NULL,
        'surcharge_id' => NULL,
        'card_number' => '',
        'customer_name' => '',
        'merchant_number' => '',
        'batch_number' => '',
        'approval_number' => '',
        'other_reference_1' => '',
        'other_reference_3' => '',
        'other_reference_2' => '',
        'based_amount' => 0,
        'actual_amount' => 0,
        'total_charge' => 0,
        'transaction_id' => 47,
        'transaction_status' => 0,
    ),
    1 => 
    array (
        'id' => 0,
        'payment_method' => 2,
        'amount' => 150,
        'check_no' => '',
        'remarks' => '',
        'check_date' => '2020-01-13',
        'bank_account_id' => NULL,
        'surcharge_id' => NULL,
        'card_number' => '',
        'customer_name' => '',
        'merchant_number' => '',
        'batch_number' => '',
        'approval_number' => '',
        'other_reference_1' => '',
        'other_reference_3' => '',
        'other_reference_2' => '',
        'based_amount' => 0,
        'actual_amount' => 0,
        'total_charge' => 0,
        'transaction_id' => 47,
        'transaction_status' => 0,
    ),
    2 => 
    array (
        'id' => 0,
        'payment_method' => 2,
        'amount' => 100,
        'check_no' => '',
        'remarks' => '',
        'check_date' => '2020-01-13',
        'bank_account_id' => NULL,
        'surcharge_id' => NULL,
        'card_number' => '',
        'customer_name' => '',
        'merchant_number' => '',
        'batch_number' => '',
        'approval_number' => '',
        'other_reference_1' => '',
        'other_reference_3' => '',
        'other_reference_2' => '',
        'based_amount' => 0,
        'actual_amount' => 0,
        'total_charge' => 0,
        'transaction_id' => 47,
        'transaction_status' => 0,
    )
);
$new_array = array();
foreach($a as $value){
    $new_array[] = array(
            'transaction_id' => $value['transaction_id'],
            'transaction_status' => $value['transaction_status'],
            'amount' => $value['amount']
            );
}
print_r($new_array);

输出：

Array
(
    [0] => Array
        (
            [transaction_id] => 47
            [transaction_status] => 0
            [amount] => 100
        )

    [1] => Array
        (
            [transaction_id] => 47
            [transaction_status] => 0
            [amount] => 150
        )

    [2] => Array
        (
            [transaction_id] => 47
            [transaction_status] => 0
            [amount] => 100
        )

)

希望这对您有所帮助。

Answer 2

您可以将array-map，array-intersect-key和array-fill-keys用作：

$keys = ['transaction_id','transaction_status','amount'];
$keys = array_fill_keys($keys,0);
$arr = array_map(function($e) use ($keys) { return array_intersect_key($e, $keys);}, $arr);

实时示例：3v4l

Answer 3

使用Laravel阵列帮助器

use Illuminate\Support\Arr;

$newArray = [];
$keys = ['transaction_id', 'transaction_status', 'amount'];

foreach($array as $item) {
    $newArray[] = Arr::only($item, $keys);
}

return $newArray;

有没有其他方法可以转换多维数组？

3 个答案: