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) {

    $sortedCurrencies[$preference] = $currencies[$preference];

}