在php中按两个以上字段对多维数组排序

我想按两个字段对数组进行排序。我的意思是说我有一个数组，比如：-

Array
 (
[0] => Array
    (
        [name] => abc
        [url] => http://127.0.0.1/abc/img1.png
        [count] => 69
        [img] => accessoire-sets_1.jpg
    )

[1] => Array
    (
        [name] => abc2
        [url] => http://127.0.0.1/abc/img12.png
        [count] => 73
        [img] => 
    )

[2] => Array
    (
        [name] => abc45
        [url] => http://127.0.0.1/abc/img122.png
        [count] => 15
        [img] => tomahawk-kopen_1.png
    )

[3] => Array
    (
        [name] => zyz
        [url] => http://127.0.0.1/abc/img22.png
        [count] => 168
        [img] => 
    )

[4] => Array
    (
        [name] => lmn
        [url] => http://127.0.0.1/abc/img1222.png
        [count] => 10
        [img] => 
    )

[5] => Array
    (
        [name] => qqq
        [url] => http://127.0.0.1/abc/img1222.png
        [count] => 70
        [img] => 
    )

[6] => Array
    (
        [name] => dsa
        [url] => http://127.0.0.1/abc/img1112.png
        [count] => 43
        [img] => 
    )

[7] => Array
    (
        [name] => wer
        [url] => http://127.0.0.1/abc/img172.png
        [count] => 228
        [img] => 
    )

[8] => Array
    (
        [name] => hhh
        [url] => http://127.0.0.1/abc/img126.png
        [count] => 36
        [img] => 
    )

[9] => Array
    (
        [name] => rrrt
        [url] => http://127.0.0.1/abc/img12.png
        [count] => 51
        [img] => 
    )

[10] => Array
    (
        [name] => yyy
        [url] => http://127.0.0.1/abc/img12.png
        [count] => 22
        [img] => 
    )

[11] => Array
    (
        [name] => cxz
        [url] => http://127.0.0.1/abc/img12.png
        [count] => 41
        [img] => 
    )

[12] => Array
    (
        [name] => tre
        [url] => http://127.0.0.1/abc/img12.png
        [count] => 32
        [img] => 
    )

[13] => Array
    (
        [name] => fds
        [url] => http://127.0.0.1/abc/img12.png
        [count] => 10
        [img] => 
    )

    )

不带图像的阵列（字段“img”）应始终放置在带图像的阵列下方。在此之后，将根据数组中的产品数量（字段计数）进行排序

意味着我必须首先根据img显示排序数组，然后再显示计数

我正在使用

usort( $childLinkCats, 'sortempty' );`

function sortempty( $a, $b ) {
    return empty( $a['img'] );
}

它将显示图像值高于包含空值的数组

并通过我使用的计数进行排序

usort($childLinkCats, "_sortByCount");
function _sortByCount($a, $b) {
    return strnatcmp($a['count'], $b['count']);
}

按计数它将短缺

---

但我面临的问题是，一次只能工作一个，但我必须同时使用这两个，请帮助我

编写一个调用两个比较函数的函数：

usort($childLinkCats, function($a, $b) {
    if (empty($a['img']) == empty($b['img'])) {
        return _sortByCount($a, $b);
    } else {
        return sortempty($a, $b);
    }
});

---

您需要确保

\u sortByCount

和

sortempty

返回正确的值。比较函数必须返回-1、0或1，而不是true或false。

比较函数应返回<0、0或>0，您只是返回一个布尔值。它将仅按图像空值进行缩短。我想同时使用这两种排序，如何获得所需结果。它仅按计数排序。首先，我想用img值显示数组，并按计数排序，然后它将用img值显示数组为null，这也按计数排序。我想要求会很明确，我忘了使用

['img']

来获取图像。