Javascript PHP：如何以desc顺序获取数据并在数组中显示数据？

我在数组中有数据，我想从数组中获取前5位的数据，并想在视图页面中显示。我对该函数的代码是：

public function dataStudentGraph($data) {

        $labels = [];
        $graph_data = [];
        foreach ($data['data'] as $student) {
                $labels[] = $student['name'];
                $graph_data[] = $student['total'];
            
        }

        $array = [
            [
                'label' => 'Total Student',
                'color' => '#fec12c',
                'data' => $graph_data
            ]
        ];
        $graph_data = [];

        return [
            'labels' => $labels,
            'datasets' => $array
        ];
    }

我的查看页面代码是：

<div class="ibox-content"> 
    {!! $student_graph !!}
</div>

---

我想按降序获取student['total']的前5个数据。请提供帮助。

您可以使用数组数据操作rsort for des order和数组\u slice获取5

公共函数dataStudentGraph$data { $labels=[]； $graph_data=[]； foreach$data['data']作为$student{ $labels[]=$student['name']； $graph_data[]=$student['total']； } $backupdatea=$graph\u数据； rsort$graph_data；//des顺序 $sortedLabels=[]； foreach$graph_数据为$i=>$data{ $index=array\u search$data，$backupdatea； $sortedLabels[$i]=$labels[$index]； } $array=[ [ “标签”=>“总销售额”， “颜色”=>“fec12c”， 'data'=>array\u slice$graph\u data，0，5//取5 ] ]; $graph_data=[]； 返回[ “标签”=>$sortedLabels， “数据集”=>$array ]; } 参考链接

---

您只需对父数组进行排序，然后从该数组中获取数据即可。假设您有一个数组，如

$data = array(
    array(
        "name"=>"Urus", 
        "total"=>60
    ),
    array(
        "name"=>"Cayenne", 
        "total"=>85
    ),
    array(
        "name"=>"Bentayga", 
        "total"=>55
    ),
    array(
        "name"=>"Lamborghini", 
        "total"=>85
    ),
    array(
        "name"=>"Porsche", 
        "total"=>90
    ),
    array(
        "name"=>"Bentley", 
        "total"=>55
    ),
    array(
        "name"=>"Nissan", 
        "total"=>70
    ),
);

array:7 [▼
  0 => array:2 [▼
    "name" => "Porsche"
    "total" => 90
  ]
  1 => array:2 [▼
    "name" => "Cayenne"
    "total" => 85
  ]
  2 => array:2 [▼
    "name" => "Lamborghini"
    "total" => 85
  ]
  3 => array:2 [▼
    "name" => "Nissan"
    "total" => 70
  ]
  4 => array:2 [▼
    "name" => "Urus"
    "total" => 60
  ]
  5 => array:2 [▼
    "name" => "Bentayga"
    "total" => 55
  ]
  6 => array:2 [▼
    "name" => "Bentley"
    "total" => 55
  ]
]

现在需要使用内部数组的总数对该数组进行排序。使用和来做这件事

array_multisort( array_column($data, "total"), SORT_DESC, $data );

这将生成一个排序数组，如

$data = array(
    array(
        "name"=>"Urus", 
        "total"=>60
    ),
    array(
        "name"=>"Cayenne", 
        "total"=>85
    ),
    array(
        "name"=>"Bentayga", 
        "total"=>55
    ),
    array(
        "name"=>"Lamborghini", 
        "total"=>85
    ),
    array(
        "name"=>"Porsche", 
        "total"=>90
    ),
    array(
        "name"=>"Bentley", 
        "total"=>55
    ),
    array(
        "name"=>"Nissan", 
        "total"=>70
    ),
);

array:7 [▼
  0 => array:2 [▼
    "name" => "Porsche"
    "total" => 90
  ]
  1 => array:2 [▼
    "name" => "Cayenne"
    "total" => 85
  ]
  2 => array:2 [▼
    "name" => "Lamborghini"
    "total" => 85
  ]
  3 => array:2 [▼
    "name" => "Nissan"
    "total" => 70
  ]
  4 => array:2 [▼
    "name" => "Urus"
    "total" => 60
  ]
  5 => array:2 [▼
    "name" => "Bentayga"
    "total" => 55
  ]
  6 => array:2 [▼
    "name" => "Bentley"
    "total" => 55
  ]
]

现在你没什么事可做了。只需在数组上循环并获取值

$labels = $graph_data = [];   
foreach ($data as $key => $student) {
    if ($key < 5) {
        $labels[] = $student['name'];
        $graph_data[] = $student['total'];
    } else {
        break;
    }  
}

$array = [
    [
        'label' => 'Total Sales',
        'color' => '#fec12c',
        'data' => $graph_data
    ]
];

$graph_data = [];

return [
    'labels' => $labels,
    'datasets' => $array
];

---

我想按降序获取student['total']的前5个数据仍然不起作用，未定义的'sortDesc'@DaminiSuthar check显示错误现在我删除所有laravel集合现在纯数组函数给我排序数据，但标签与数据不符。他们都在不同的岗位上工作variables@DaminiSuthar现在检查我添加了$sortedLabels基于graph_数据数据数据是$student['total']是所有整数，或者还有一些其他格式，可能是数字或浮点