在laravel中对数组进行排序答案

【问题标题】：sorting array of array in laravel在laravel中对数组进行排序
【发布时间】：2020-01-30 16:59:12
【问题描述】：

我有一个数组，我想根据每个数组中的数字对其进行排序

[
    ["Plastic and cosmetic surgery",90],
    ["Dermatology surgery",121],
    ["Infertility",134],
    ["Gynecology surgery",191],
    ["Hair transplant",92],
    ["Bariatrics and weight loss surgery",117],
    ["Dentistry",88]
]

【问题讨论】：

stackoverflow.com/a/19454643/4248328
这种情况需要自己写排序算法，因为不是一般情况
How to sort an array of associative arrays by value of a given key in PHP?的可能重复

标签： php arrays laravel sorting

【解决方案1】：

对此有一个惊人而简单的默认 laravel 解决方案。

$collection = collect([
        ["Plastic and cosmetic surgery",90],
        ["Dermatology surgery",121],
        ["Infertility",134],
        ["Gynecology surgery",191],
        ["Hair transplant",92],
        ["Bariatrics and weight loss surgery",117],
        ["Dentistry",88]
    ]);

        $sorted = $collection->sortBy(1);

        $data = $sorted->values()->all();
        dd($data);

输出

    array:7 [▼
  0 => array:2 [▼
    0 => "Dentistry"
    1 => 88
  ]
  1 => array:2 [▼
    0 => "Plastic and cosmetic surgery"
    1 => 90
  ]
  2 => array:2 [▼
    0 => "Hair transplant"
    1 => 92
  ]
  3 => array:2 [▼
    0 => "Bariatrics and weight loss surgery"
    1 => 117
  ]
  4 => array:2 [▼
    0 => "Dermatology surgery"
    1 => 121
  ]
  5 => array:2 [▼
    0 => "Infertility"
    1 => 134
  ]
  6 => array:2 [▼
    0 => "Gynecology surgery"
    1 => 191
  ]
]

您可以在documentation 中查看更多类似功能。我希望你会喜欢这个解决方案。

【讨论】：

【解决方案2】：

试试这个按数字排序值。

输入

$array = [
    ["Plastic and cosmetic surgery",90],
    ["Dermatology surgery",121],
    ["Infertility",134],
    ["Gynecology surgery",191],
    ["Hair transplant",92],
    ["Bariatrics and weight loss surgery",117],
    ["Dentistry",88]
];

usort($array, 'sortByNumber');
function sortByNumber($a, $b)
{
    $a = $a[1];
    $b = $b[1];

    if ($a == $b) return 0;
    return ($a < $b) ? -1 : 1;
}

echo "<pre>";
print_r($array);
die;

输出

Array
(
    [0] => Array
        (
            [0] => Dentistry
            [1] => 88
        )

    [1] => Array
        (
            [0] => Plastic and cosmetic surgery
            [1] => 90
        )

    [2] => Array
        (
            [0] => Hair transplant
            [1] => 92
        )

    [3] => Array
        (
            [0] => Bariatrics and weight loss surgery
            [1] => 117
        )

    [4] => Array
        (
            [0] => Dermatology surgery
            [1] => 121
        )

    [5] => Array
        (
            [0] => Infertility
            [1] => 134
        )

    [6] => Array
        (
            [0] => Gynecology surgery
            [1] => 191
        )

)

【讨论】：