PHP实现二维数组根据key进行排序

    <?php
    
    /**
     * =======================================
     * Created by Zhihua_W.
     * Author: Zhihua_W
     * Date: 2016/11/26 0002
     * Time: 下午 2:43
     * Project: PHP开发小技巧
     * Power: 实现二维数组根据key进行排序
     * =======================================
     */
    
    /**
     * 二维数组排序
     * @param array $arr 需要排序的二维数组
     * @param string $keys 所根据排序的key
     * @param string $type 排序类型，desc、asc
     * @return array $new_array 排好序的结果
     */
    function array_sort($arr, $keys, $type = 'desc')
    {
        $key_value = $new_array = array();
        foreach ($arr as $k => $v) {
            $key_value[$k] = $v[$keys];
        }
        if ($type == 'asc') {
            asort($key_value);
        } else {
            arsort($key_value);
        }
        reset($key_value);
        foreach ($key_value as $k => $v) {
            $new_array[$k] = $arr[$k];
        }
        return $new_array;
    }
    
    $arr = array(
        array(
            'name' => 'a',
            'sex' => 'm',
            'sort' => 5
        ),
        array(
            'name' => 'c',
            'sex' => 'm',
            'sort' => 8
        ),
        array(
            'name' => 'g',
            'sex' => 'm',
            'sort' => 3
        ),
        array(
            'name' => 'e',
            'sex' => 'w',
            'sort' => 6
        ),
        array(
            'name' => 'b',
            'sex' => 'w',
            'sort' => 2
        ),
    );
    
    //打印出原数组
    print_r($arr);
    //打印出排好序的数组
    print_r(array_sort($arr,'name'));
    
    ?>