使用元素内的多个键进行数组元素排序 - PHP - Array element sorting using multiple keys inside the element - PHP

Array element sorting using multiple keys inside the element - PHP

本文关键字：数组元素排序 PHP 元素 | 更新日期: 2023-09-27

我已经将数组转换为JSON，如下所示：

[
    {
        "name": "Sally",
        "nick_name": "sal",
        "availability": "0",
        "is_fav": "0"
    },
    {
        "name": "David",
        "nick_name": "dav07",
        "availability": "0",
        "is_fav": "1"
    },
    {
        "name": "Zen",
        "nick_name": "zen",
        "availability": "1",
        "is_fav": "0"
    },
    {
        "name": "Jackson",
        "nick_name": "jack",
        "availability": "1",
        "is_fav": "1"
    },
    {
        "name": "Rohit",
        "nick_name": "rod",
        "availability": "0",
        "is_fav": "0"
    },
]

我想根据 is_fav、availability 和 nick_name 的值按以下顺序对整个数组进行排序：

[ is_fav:1 availability:1 ]
[ is_fav:1 availability:0 ]
[ is_fav:0 availability:1 ]
[ is_fav:0 availability:0 ]

在每种情况下，元素都使用nick_name按字母顺序排序

所以上面例子中的最后一个数组看起来像

[
    {
        "name": "Jackson",
        "nick_name": "jack",
        "availability": "1",
        "is_fav": "1"
    },
    {
        "name": "David",
        "nick_name": "dav07",
        "availability": "0",
        "is_fav": "1"
    },
    {
        "name": "Zen",
        "nick_name": "zen",
        "availability": "1",
        "is_fav": "0"
    },
    {
        "name": "Rohit",
        "nick_name": "rod",
        "availability": "0",
        "is_fav": "0"
    },
    {
        "name": "Sally",
        "nick_name": "sal",
        "availability": "0",
        "is_fav": "0"
    },
]

试试这个array_multisort

$arr = json_decode($data, true);
// Obtain a list of columns
foreach ($arr as $key => $row) {
    $isFav[$key] = $row['is_fav'];
    $avail[$key] = $row['availability'];
    $names[$key] = $row['nick_name'];
}
// Sort the data with isFav descending, avail descending
// Add $arr as the last parameter, to sort by the common key
array_multisort($isFav, SORT_DESC, $avail, SORT_DESC, $names, SORT_ASC, $arr);

你可以在这里看到它的实际效果（3v4l.org）

你可以使用 PHP 的usort函数，如

usort($arr,function($a,$b){
    $c = $b['is_fav'] - $a['is_fav'];
    $c .= $b['availability'] - $a['availability'];
    $c .= strcmp($a['nick_name'],$b['nick_name']);
    return $c;
});
print_r($arr);

$arr = json_decode($data, true);
usort($arr, function ($item1, $item2) {
    // your condition
    if ($item1['is_fav'] && !$item2['is_fav']) return 1;
    if (!$item1['is_fav'] && $item2['is_fav']) return -1;
    if ($item1['availability'] > $item2['availability']) return 1;
    if ($item1['availability'] < $item2['availability']) return -1;
    return 0;
});
$data = json_encode($arr);