Php 如何获取数组中三个类别的总分百分比？

我有这样的回答

[0] => Array (
    [category_id] => 2
    [name] => Listening
    [question_id] => 10
    [question_choice_id] => 38
    [choice_level] => 0
    )
[1] => Array (
    [category_id] => 2
    [name] => Listening
    [question_id] => 11
    [question_choice_id] => 44
    [choice_level] => 0
    )
[2] => Array (
    [category_id] => 2
    [name] => Listening
    [question_id] => 12
    [question_choice_id] => 45
    [choice_level] => 0
    )
[3] => Array (
    [category_id] => 2
    [name] => Listening
    [question_id] => 13
    [question_choice_id] => 50
    [choice_level] => 0
    )
[4] => Array (
    [category_id] => 2
    [name] => Listening
    [question_id] => 14
    [question_choice_id] => 55
    [choice_level] => 0
    )
[5] => Array (
    [category_id] => 2
    [name] => Listening
    [question_id] => 15
    [question_choice_id] => 58
    [choice_level] => 1
    )
[6] => Array (
    [category_id] => 1
    [name] => Reading
    [question_id] => 1
    [question_choice_id] => 2
    [choice_level] => 0
    )
[7] => Array (
    [category_id] => 1
    [name] => Reading
    [question_id] => 2
    [question_choice_id] => 8
    [choice_level] => 0
    )
[8] => Array (
    [category_id] => 1
    [name] => Reading
    [question_id] => 3
    [question_choice_id] => 9
    [choice_level] => 0
    )
[9] => Array (
    [category_id] => 1
    [name] => Reading
    [question_id] => 4
    [question_choice_id] => 13
    [choice_level] => 1
    )
[10] => Array (
    [category_id] => 1
    [name] => Reading
    [question_id] => 5
    [question_choice_id] => 19
    [choice_level] => 0
    )
[11] => Array (
    [category_id] => 1
    [name] => Reading
    [question_id] => 6
    [question_choice_id] => 22
    [choice_level] => 1
    )
[12] => Array (
    [category_id] => 1
    [name] => Reading
    [question_id] => 7
    [question_choice_id] => 25
    [choice_level] => 1
    )
[13] => Array (
    [category_id] => 1
    [name] => Reading
    [question_id] => 8
    [question_choice_id] => 30
    [choice_level] => 0
    )
[14] => Array (
    [category_id] => 1
    [name] => Reading
    [question_id] => 9
    [question_choice_id] => 36
    [choice_level] => 0
    )
[15] => Array (
    [category_id] => 3
    [name] => Grammar
    [question_id] => 31
    [question_choice_id] => 122
    [choice_level] => 0
    )
[16] => Array (
    [category_id] => 3
    [name] => Grammar
    [question_id] => 32
    [question_choice_id] => 125
    [choice_level] => 0
    )

因此，这里我有3个类别，即

听力、阅读、语法

获取使用一个类别的用户的总百分比很容易，但我不知道如何获取并将这3个类别存储在我的数组中以显示给我的视图

我想用公式得到用户的百分比

分数=正确答案/总计数数组*100

正确答案在

choice\u level

列中的值为1

我的例子是，公式应该是

Reading

TOTAL  = 2 / 9 * 100 

如何从这个数组中获取总数

一旦我得到答案，我只想让他们回到我的观点

我还有一个会话，它是category_id，它是一个数组，我想我可以用它来获得每个类别的结果

$category_id = [1,2,3];

这是我的数据库查询，我能在这里得到结果吗？而不是在我的后端编码

SELECT answer.category_id,category.name,answer.question_id,answer.question_choice_id,choice.choice_level
FROM answers AS answer
LEFT JOIN  categories AS category ON answer.category_id = category.id
LEFT JOIN question_choices AS choice ON answer.question_choice_id = choice.id
WHERE answer.user_set_id = 1 and answer.user_id = 3

---

有人能帮我做这件事吗？我真的不知道该怎么办。如果有任何帮助，我们将不胜感激。

其中一种方法是使用收集的方法

$original_array = collect([]); // your array

$expected_array = [];

$grouped_array = $original_array->groupBy('name')->map(function ($item, $key) 
use (&$expected_array) {

$expected_array[$key]['occurence'] = $item->where('choice_level', 1)->count();
$expected_array[$key]['total'] = $item->count();
$expected_array[$key]['percentage'] = ($expected_array[$key]['occurence'] / $expected_array[$key]['total']) * 100;

});


return view('your-view', compact('expected_array'));

---

为什么不从mysql本身获取这些信息呢？那很容易，先生，但我做不到。这就是为什么我只是想通过我的回答来解决这个问题：（我应该发布我的查询和表吗，先生？是的，共享表架构，会给出一个查询。@JitendraYadav嗨，先生，我已经发布了我的查询。哦，这解决了我的问题。谢谢你，先生。我可以问先生吗？我如何将其存储到变量中？这样我就可以把它放在我的视图中？谢谢你的帮助！我真的很感激。嗨，我是真的假设我得到了错误的百分比答案，我认为

计数（$value）

没有得到正确答案，在

选择级别

列中的值为1，您能再看一看吗，先生？我想这不算正确答案。是的，先生！这就是我所做的，对不起，先生，我没有首先理解代码，我只是对我遇到的问题感到紧张。谢谢先生，我今天学到了一个新东西，

  public function more_details(){

     $category_id = Session::get('category_id'); //[1,2,3];

    //more_details score of the user.
    $score = Answer::get_user_more_details();
    
    return view('pages.user.user_more_details',  [
     'title' => '',
    ]);
  
  }

SELECT answer.category_id,category.name,answer.question_id,answer.question_choice_id,choice.choice_level
FROM answers AS answer
LEFT JOIN  categories AS category ON answer.category_id = category.id
LEFT JOIN question_choices AS choice ON answer.question_choice_id = choice.id
WHERE answer.user_set_id = 1 and answer.user_id = 3

Category_table

id(PK) |   name 
1                   Reading
2                   Listening
3                   Grammar

Answer_table
id(PK)  | category_id | question_id | question_choice_id
1             2            10            38
2             2            11            44
3             2            12            45
4             2            13            50
5             2            14            55
6             2            15            58
7             1            1             2
8             1            2             8
9             1            3             9
10            1            4             13
11            1            5             19
12            1            6             22
13            1            7             25
14            1            8             30
15            1            9             36
16            3            31            122
17            3            32            125

Question_choice_table

id(PK) | choice_level
38          0
44          0
45          0
50          0
55          0
58          1
2           0
8           0
9           0
13          1
19          0
22          1
25          1
30          0
36          0
122         0
125         0

$original_array = collect([]); // your array

$expected_array = [];

$grouped_array = $original_array->groupBy('name')->map(function ($item, $key) 
use (&$expected_array) {

$expected_array[$key]['occurence'] = $item->where('choice_level', 1)->count();
$expected_array[$key]['total'] = $item->count();
$expected_array[$key]['percentage'] = ($expected_array[$key]['occurence'] / $expected_array[$key]['total']) * 100;

});


return view('your-view', compact('expected_array'));