使用jQuery和AJAX将多维数组传递给PHP

I've got the jQuery code:

我有jQuery代码：

$(document).ready(function() {

answers = new Array();

answers[0] = new Array();
answers[0]['question_id'] = 12;
answers[0]['answer_id'] = 32;

answers[1] = new Array();
answers[1]['question_id'] = 55;
answers[1]['answer_id'] = 132;

answers[2] = new Array();
answers[2]['question_id'] = 987;
answers[2]['answer_id'] = 1112;

$.ajax({
    type: "POST",
    url: "collect.php",
    data: {answers: answers},
    dataType: "json",
    beforeSend:function(){
        // Do something before sending request to server
    },
    error: function(jqXHR, textStatus, errorThrown){

        alert(errorThrown);
    },
    success: function(data){

        alert('success!');
    }
});

});

}）;

Now, should this work? According to what I've found when looking for code examples it should. Problem is, I have no idea how I could collect the data in my PHP file. I mean, it's a $_POST[], but then what? How do I collect the $result[0]['question_id'] and all the other data?

现在，这应该工作吗？根据我在寻找代码示例时发现的内容。问题是，我不知道如何在PHP文件中收集数据。我的意思是，它是一个$ _POST []，但那么呢？如何收集$ result [0] ['question_id']和所有其他数据？

Thanks a lot in advance,

非常感谢提前，

Carl C. Carlsson

3 个解决方案

#1

You're never actually populating the arrays inside of the answers array with data, their length is still 0 because you're using string indexes rather than int indexes. What you really want are objects stored in your array.

你实际上从来没有用数据填充answers数组中的数组，它们的长度仍为0，因为你使用的是字符串索引而不是int索引。你真正想要的是存储在你的数组中的对象。

answers[0] = {};
answers[0]['question_id'] = 12;
answers[0]['answer_id'] = 32;

#2

You can collect the value in php page with $_POST['answers']. Then you can loop through that array do whatever you want with the data.

您可以使用$ _POST ['answers']在php页面中收集值。然后你可以循环遍历该数组，随心所欲地处理数据。

#3

It was solved by changing the Javascript to:

通过将Javascript更改为：

answers = {};

I could then simply access the data in PHP with:

然后，我可以使用以下方法访问PHP中的数据：

$_POST['answers'][1]['answer_id'];

for example, or just loop through it.

例如，或者只是循环它。

Thanks for your help, ladies and gentlemen.

谢谢你的帮助，女士们，先生们。

#1

answers[0] = {};
answers[0]['question_id'] = 12;
answers[0]['answer_id'] = 32;

#2