$multiArray = [
    ['name' => 'John', 'age' => 28],
    ['name' => 'Alice', 'age' => 22],
    ['name' => 'Bob', 'age' => 25]
];

// 按age升序排序
usort($multiArray, function($a, $b) {
    return $a['age'] <=> $b['age'];
});

// 按age降序排序
usort($multiArray, function($a, $b) {
    return $b['age'] <=> $a['age'];
});

data = [
    {'name': 'John', 'age': 28},
    {'name': 'Alice', 'age': 22},
    {'name': 'Bob', 'age': 25}
]

# 按age升序排序
sorted_data = sorted(data, key=lambda x: x['age'])

# 按age降序排序
sorted_data = sorted(data, key=lambda x: x['age'], reverse=True)

const data = [
    {name: 'John', age: 28, score: 85},
    {name: 'Alice', age: 22, score: 90},
    {name: 'Bob', age: 25, score: 85}
];

// 先按score降序，再按age升序
data.sort((a, b) => {
    if (a.score !== b.score) {
        return b.score - a.score;
    }
    return a.age - b.age;
});

import java.util.Arrays;
import java.util.Comparator;

public class Main {
    public static void main(String[] args) {
        int[][] array = {{3, 4}, {1, 2}, {5, 6}, {2, 3}};
        
        // 按第一个元素升序排序
        Arrays.sort(array, Comparator.comparingInt(a -> a[0]));
        
        // 按第二个元素降序排序
        Arrays.sort(array, (a, b) -> b[1] - a[1]);
    }
}