根据用户定义的偏好在 PHP 数组中排序

Question

我有一个 php 国家/地区数组，我希望根据客户的要求将其按特定顺序排序。

该数组目前是从我们的后端馈入的，我无法控制，如下所示：

        array(10) {

  ["AUD"]=>

  string(17) "Australian Dollar"

  ["GBP"]=>

  string(22) "British Pound Sterling"

  ["CAD"]=>

  string(15) "Canadian Dollar"

  ["DKK"]=>

  string(12) "Danish Krone"

  ["EUR"]=>

  string(4) "Euro"

  ["JPY"]=>

  string(12) "Japanese Yen"

  ["NOK"]=>

  string(15) "Norwegian Krone"

  ["RUB"]=>

  string(13) "Russian Ruble"

  ["SEK"]=>

  string(13) "Swedish Krona"

  ["USD"]=>

  string(9) "US Dollar"

}

我需要根据客户偏好重新排序

        array(10) {

  ["GBP"]=>

  string(22) "British Pound Sterling"

  ["AUD"]=>

  string(17) "Australian Dollar"

  ["NOK"]=>

  string(15) "Norwegian Krone"

  ["RUB"]=>

  string(13) "Russian Ruble"

  ["USD"]=>

  string(9) "US Dollar"

  ["CAD"]=>

  string(15) "Canadian Dollar"

  ["DKK"]=>

  string(12) "Danish Krone"

  ["EUR"]=>

  string(4) "Euro"

  ["JPY"]=>

  string(12) "Japanese Yen"

  ["SEK"]=>

  string(13) "Swedish Krona"

}

我能想到的唯一方法是使用 switch 语句，

            $ordered_currencies = Array();

        ?>

        <?php foreach ($currencies as $_code => $_name): 

                switch ($_code) {

            case 'AUD':

            $ordered_currencies[0] = [$_code => $_name];

                break;

            case 'CAD':

            $ordered_currencies[1] = Array($_code => $_name);

                break;

            case 'GBP':

            $ordered_currencies[2] = Array($_code => $_name);

                break;

            case 'DKK':

            $ordered_currencies[3] = Array($_code => $_name);

                break;

            case 'EUR':

            $ordered_currencies[4] = Array($_code => $_name);

                break;

            case 'JPY':

            $ordered_currencies[5] = Array($_code => $_name);

                break;

            case 'RUB':

            $ordered_currencies[6] = Array($_code => $_name);

                break;

            case 'SEK':

Answer 1

您可以将客户端首选项存储为货币代码数组，并$currencies按照此首选项数组的顺序获取值：$preferences = ['AUD', 'CAD', 'GBP'];$sortedCurrencies = [];foreach ($preferences as $preference) {&nbsp; &nbsp; $sortedCurrencies[$preference] = $currencies[$preference];}