Question

我有一个数组，我想按优先级DESC的值对其进行排序。

"status":"OK",
"baseurl":"http://www.test.com",
"pictureurl":"http://www.test.com",
"result":[
    {
        "videoid":"60",
        "username":"1556495708",
        "submittime":"1400112000",
        "videotitle":"Test Video",
        "videodescription":"Test Video Description",
        "priority":12
    },
    {
        "videoid":"61",
        "username":"1556495708",
        "submittime":"1400151306",
        "videotitle":"Test Video",
        "videodescription":"Test Video Description",
        "priority":20
    }

]

我使用此代码但它不起作用。它总是给出result =“null”

我的二手代码

function aasort (&$array, $key) {
    $sorter=array();
    $ret=array();
    reset($array);
    foreach ($array as $ii => $va) {
        $sorter[$ii]=$va[$key];
    }
    asort($sorter);
    foreach ($sorter as $ii => $va) {
        $ret[$ii]=$array[$ii];
    }
    $array=$ret;
}



    $output = array(
                'status' => $status,
                'baseurl' =>$baseURL,
                'pictureurl' =>$imagebaseURL,
                'result' => aasort($info,"priority")
            );

如何按“优先级”DESC

的值对此数组进行排序

Answer 1

这样做，你需要提取数组然后先解码它。

echo '<pre>';

$json = '
[
    {
        "videoid":"60",
        "username":"1556495708",
        "submittime":"1400112000",
        "videotitle":"Test Video",
        "videodescription":"Test Video Description",
        "priority":12
    },
    {
        "videoid":"61",
        "username":"1556495708",
        "submittime":"1400151306",
        "videotitle":"Test Video",
        "videodescription":"Test Video Description",
        "priority":20
    }

]';
$array = json_decode($json, true);

function do_sort($a, $b) {
    return $b['priority'] - $a['priority'];
}

usort($array, 'do_sort');

print_r($array);

Answer 2

PHP＆gt; = 5.5.0 ：

$array = json_decode($json, true);
array_multisort(array_column($array['result'], 'priority'),
    SORT_DESC, $array['result']);

按键值PHP排序的多维数组

2 个答案: