无法使用ajax将多维数组传递给php

Array I am trying to pass: 我想通过的数组：

var params = [];
params['request'] = "movies";
params['param'] = [];
params['param']['sortBy'] = "title";
params['param']['sortOrder'] = "asc";

Ajax call: Ajax呼叫：

return $.ajax({
        type: "POST",
        url: "http://192.168.0.100:83/getData.php",
        cache:false,
        data: params,
        dataType:"json",
        success: function(data){
            if(data != null){
                            console.log(data);
                        }

Problem is that the php script only receives $_POST['request'], params is non-existent. 问题是php脚本仅接收$ _POST ['request']，参数不存在。

If I view params array in the console log before the ajax call I see this: 如果我在ajax调用之前在控制台日志中查看params数组，则会看到以下内容：

[request: "movies", param: Array[0]]
length: 0
param: Array[0]
length: 0
sortBy: "title"
sortOrder: "asc"
__proto__: Array[0]
request: "movies"
__proto__: Array[0]

It seems like the problem could be that "param" parameter is not passed because it is seen as empty (it is not, at least before it is passed to ajax call), but why this is happening I have no idea. 似乎问题可能在于未传递“ param”参数PHP多维数组，因为它被视为空（至少在传递给ajax调用之前，它不是），但是为什么这种情况我不知道。 What am I missing here? 我在这里想念什么？

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