打字稿文件中的PHP

Question

我需要使用PHP数组值填充一些打字稿数组。我是这样做的：

index.php的相关部分：

<?
    require 'scripts/back_end/database_connection.php';
    require 'scripts/back_end/get_countries.php';
    require 'scripts/back_end/views/select.php';
    require 'scripts/back_end/views/view.php';

    $conn->close();
?>

<script type="text/javascript">
    var allCountries = <? echo json_encode($allCountries, JSON_PRETTY_PRINT) ?>;
</script>

我更喜欢将var allCountries = javascript行添加到此函数中的typescript文件中，如下所示：

$(document).ready(function() {
    var allCountries = <? echo json_encode($allCountries, JSON_PRETTY_PRINT) ?>;
    var _searchFilterViewModel: SearchFilterViewModel = new SearchFilterViewModel(allCountries, allCategories);
    var _searchFilterForm = $("#find-vegan-products-page").find("form")[0];
    ko.applyBindings(_searchFilterViewModel, _searchFilterForm);
);

然而，PHP标记只能在javascript文件中识别。有没有办法让php在typescript文件中被识别？