PHP sorts according to a certain field in the array

Function introduction:

array_multisort() function returns a sorted array. You can enter one or more arrays. The function sorts the first array first, then the other arrays, and if two or more values ​​are the same, it sorts the next array.

Code example:

1. Sort by single field:

$data = [
    ['id' => 1, 'name' => '张三', 'sort' => 60],
    ['id' => 2, 'name' => '李四', 'sort' => 40],
    ['id' => 3, 'name' => '王五', 'sort' => 80],
];

// 先取出要排序的字段的值
$sort = array_column($data, 'sort');
// 按照sort字段升序  其中SORT_ASC表示升序 SORT_DESC表示降序
array_multisort($sort, SORT_ASC, $data);
// 输出结果
var_dump($data);

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2 , Sorting by multiple fields:

$data = [
    ['id' => 1, 'name' => '张三', 'sort' => 60],
    ['id' => 2, 'name' => '李四', 'sort' => 60],
    ['id' => 3, 'name' => '王五', 'sort' => 80],
];

// 先取出要排序的字段的值
$sort = array_column($data, 'sort');
$name = array_column($data, 'name');
// 先按照sort字段升序，再按照name字段降序
array_multisort($sort, SORT_ASC, $name, SORT_DESC, $data);
// 输出结果
var_dump($data);

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