Question

我有这个数组：

[0] => Array
    (


        [tags] => SimpleXMLElement Object
            (
                [0] => MusicVideos, #20
            )

    )

[1] => Array
    (

        [tags] => SimpleXMLElement Object
            (
                [0] => MusicVideos, #5
            )

    )

[2] => Array
    (


        [tags] => SimpleXMLElement Object
            (
                [0] => #9, MusicVideos
            )

    )

[3] => Array
    (

        [tags] => SimpleXMLElement Object
            (
                [0] => #12, MusicVideos
            )

    )

现在我想通过[tags]对这个数组进行排序这个PHP怎么做？使用在线工具[标签]用户在我的网站上订购我希望“＃1”，“＃2”

但我还有一个比[“＃1”和“类别”

更多的[标签]

[Tags] => #1 [Tags] => MusicVideos, #2 [Tags] => #3

可能是这样的命令吗？

我尝试使用此功能：

function msort($array, $key, $sort_flags = SORT_NUMERIC) {
if (is_array($array) && count($array) > 0) {
    if (!empty($key)) {
        $mapping = array();
        foreach ($array as $k => $v) {
            $sort_key = '';
            if (!is_array($key)) {
                $sort_key = $v[$key];
            } else {
                // @TODO This should be fixed, now it will be sorted as string
                foreach ($key as $key_key) {
                    $sort_key .= $v[$key_key];
                }
                $sort_flags = SORT_STRING;
            }
            $mapping[$k] = $sort_key;
        }
        asort($mapping, $sort_flags);
        $sorted = array();
        foreach ($mapping as $k => $v) {
            $sorted[] = $array[$k];
        }
        return $sorted;
    }
}
return $array;

}

但是所有的SORT都会在NAME和下一个NUMBER之后引入EMPTY

[0] => Array
    (
        [tags] => SimpleXMLElement Object
            (
                [0] => #5
            )

    )

[1] => Array
    (
        [tags] => SimpleXMLElement Object
            (
                [0] => Commercials, #3
            )

    )

[2] => Array
    (
        [tags] => SimpleXMLElement Object
            (
                [0] => Commercials, #9
            )


    )

[3] => Array
    (
        [tags] => SimpleXMLElement Object
            (
                [0] => MusicVideos, #1
            )

    )

[4] => Array
    (
        [tags] => SimpleXMLElement Object
            (
                [0] => MusicVideos, #10
            )


    )

我想要这样的东西：

[0] => Array
    (
        [tags] => SimpleXMLElement Object
            (
                [0] => MusicVideos, #1
            )

    )

[1] => Array
    (
        [tags] => SimpleXMLElement Object
            (
                [0] => Commercials, #3
            )

    )

[2] => Array
    (
        [tags] => SimpleXMLElement Object
            (
                [0] => #5
            )

    )

[3] => Array
    (
        [tags] => SimpleXMLElement Object
            (
                [0] => Commercials, #9
            )

    )

[4] => Array
    (
        [tags] => SimpleXMLElement Object
            (
                [0] => MusicVideos, #10
            )

    )

由于

Answer 1

您应该能够使用usort和适当的可调用来进行排序。

排序功能可以使用任何逻辑来提取排序字段。如果您想按照以#开头的标记排序，后跟一个数字，您需要在标记字段中找到该子字符串（此处使用正则表达式）：

usort($arr, function($a, $b) {
    $matches = array();
    preg_match('/#(\d+)/', (string) $a['tags'], $matches);
    $aTagNo = (int) $matches[1];
    preg_match('/#(\d+)/', (string) $b['tags'], $matches);
    $bTagNo = (int) $matches[1];

    if ($aTagNo < $bTagNo)
        return -1;
    else if ($aTagNo > $bTagNo)
        return 1;
    else
        return 0;
});

排序PHP多维数组[Value1]，[Value2]

1 个答案: