Javascript 我想创建一个包含php变量的.json文件？

我想创建一个名为“file.json.php”的文件

它包含来自PHP的变量，如$\u POST['foo']

此文件将根据ajax调用传递的post var值生成不同的结果

为call file.php.json创建ajax需要哪些配置？如何将数组作为参数传递给json文件

jqxhr = $.ajax('../files/data/file.json').

这是Json文件

{
"data": [{
    "work": "Symfony No. 3 in D minor",
    "id": "1",
    "composer": "Anton Bruckner"
}, {
    "work": "Violin Concerto in E minor",
    "id": "2",
    "composer": "Mendelssohn Felix"
}, {
  "work": "Symfony No.1 in C major",
  "id": "3",
  "composer": "Beethoven, Ludwig van"
}, {
    "work": "Solution for dynamic headers in datatables",
    "id": "4",
    "composer": "Fasani, Guza"
  }],
"columns": [
                    {
                        "data": "work",
                        "name": "Work"
                    },
                    {
                        "data": "id",
                        "name": "Product ID"

                    },
                    {
                        "data": "composer",
                        "name": "Composer"
                    }
            ]
   }

---

最后，我创建了一个名为file.json.php的文件，并将其作为php普通文件进行管理，但添加了一个带有函数json_encode（）的echo

这是我如何制作文件的摘录

  //only making to arrays an array (in this case for datatables dynamic columns on the fly)

    $columns[] = array("data" => "id", "name"=>"Id");
    $columns[] = array("data" => "number", "name"=>"numeroItem");
    $columns[] = array("data" => "item", "name"=>"Item");

    $a = array();
    $a['id'] = $row[$k]['id'];
    $a['number'] = $row[$k]['number'];
    $a['item']= $row[$k]['Item'];


    $data[] = $a;

    $json_for_datatable = array("columns" => $columns, "data" => $data);

    echo json_encode($json_for_datatable);

对于配置或注意事项，必须使用函数JSON.parse（）接收de-responseText，“这很重要

data = JSON.parse(jqxhr.responseText);

用于在ajax调用中考虑

var data,
            tableName = '#exampleTablaDinamica'+$(this).attr("data-id"),
            columns, str,
            jqxhr = $.ajax('../files/data/data.json.php?idPartida='+$(this).attr("data-idpartida")+'&meses='+ selected +'&idPresupuesto='+$('#idPresupuesto').val())
                    .done(function () {
                        data = JSON.parse(jqxhr.responseText);
            // Iterate each column and print table headers for Datatables
            $(tableName + " thead").html("<tr></tr>");

            $.each(data.columns, function (k, colObj) {
                str = '<th>' + colObj.name + '</th>';
                $(str).appendTo(tableName+'>thead>tr');
            });
            // Add some Render transformations to Columns
            // Not a good practice to add any of this in API/ Json side



            data.columns[0].render = function (data, type, row) {
                return data;
            }
            data.columns[1].render = function (data, type, row) {
                return data;
            }
            data.columns[2].render = function (data, type, row) {
                return "<a href='a.php'>" + data + "</a>";
            }

            // Debug?
            console.log(data.columns[0]);

            if ( $.fn.DataTable.isDataTable(tableName) ) {
              $(tableName).DataTable().destroy();

            }


            table = $(tableName).dataTable({
                "data": data.data,
                "columns": data.columns,
                "responsive":true,
                "fnInitComplete": function () {
                    // Event handler to be fired when rendering is complete (Turn off Loading gif for example)
                    console.log('Datatable rendering complete');
                }
            });

        })
        .fail(function (jqXHR, exception) {
                        var msg = '';
                        if (jqXHR.status === 0) {
                            msg = 'Not connect.\n Verify Network.';
                        } else if (jqXHR.status == 404) {
                            msg = 'Requested page not found. [404]';
                        } else if (jqXHR.status == 500) {
                            msg = 'Internal Server Error [500].';
                        } else if (exception === 'parsererror') {
                            msg = 'Requested JSON parse failed.';
                        } else if (exception === 'timeout') {
                            msg = 'Time out error.';
                        } else if (exception === 'abort') {
                            msg = 'Ajax request aborted.';
                        } else {
                            msg = 'Uncaught Error.\n' + jqXHR.responseText;
                        }
            console.log(msg);
        });

---

当然是这样，但是为什么不使用数据库呢？“这是我的Json文件”那么你是在尝试创建Json文件，还是在尝试使用/读取Json文件来生成其他结果？实际上，这是一个用于为datatableHi创建表的Json，@PatrickQ，我正在尝试生成一个Json文件来放置dinamic内容。就目前的一些变量而言，这个问题太广泛了。任何“是否可能……”问题的答案几乎总是“是的”。你需要做一些尝试来实现你的目标，看看你能走多远。如果您在某些特定的问题上遇到困难，请随时发布一个问题，其中包括您正在使用的代码、预期结果是什么、实际结果是什么以及您已经完成的调试。

{
"columns": [{
    "data": "id",
    "name": "Id"
}, {
    "data": "number",
    "name": "number"
}, {
    "data": "item",
    "name": "Item"
}, {
    "data": "10 2018",
    "name": "10 2018"
}, {
    "data": "11 2018",
    "name": "11 2018"
}, {
    "data": "total",
    "name": "total"
}],
"data": [{
    "id": "1",
    "number": "1.1",
    "item": "loremipsum  loremipsum  loremipsum  loremipsum  ",
    "10 2018": "0",
    "11 2018": "0",
    "total": "20.741"
}]
}