如何通过每个元素中对象内部的值对对象的PHP数组排序?

问题描述

这是数组的简化版本.通过"id"或"created_by"对它进行排序很容易，但是我很难弄清楚如何在元素"内按"e5e53240-1d5a-4b50-ad7d-cfa00f33badd"的值对其进行排序目的.我花了数小时来寻找其他问题，试图解决这个问题，但是没有运气.

Here is a simplified version of the array. It is easy to sort this by 'id', or 'created_by', but I'm having a hard time figuring out how to sort it by the value of "e5e53240-1d5a-4b50-ad7d-cfa00f33badd" inside the 'elements' object. I've spent hours searching through other questions trying to figure this out, but with no luck.

所以这是通过print_r简化的数组版本:

So here's the simplified version of the array via print_r:

[0] => stdClass Object
    (
        [id] => 12
        [created_by] => 776
        [searchable] => 1
        [elements] =>  {
"b2c4ecaa-f68f-4a5c-a551-339aa8f01421":  {

},


"e5e53240-1d5a-4b50-ad7d-cfa00f33badd":  {
    "0":  {
        "value": "Aeronca"
    }
},

"d7c903a8-fa15-4620-9d9b-2238cb48fd5c":  {
    "0":  {
        "value": "L-3B"
    }
}

    )

[1] => stdClass Object
    (
        [id] => 21
        [created_by] => 776
        [searchable] => 1
        [elements] =>  {
"b2c4ecaa-f68f-4a5c-a551-339aa8f01421":  {

},


"e5e53240-1d5a-4b50-ad7d-cfa00f33badd":  {
    "0":  {
        "value": "BEECHCRAFT"
    }
},

"d7c903a8-fa15-4620-9d9b-2238cb48fd5c":  {
    "0":  {
        "value": "N-35"
    }
}

    )

[2] => stdClass Object
    (
        [id] => 13
        [created_by] => 776
        [searchable] => 1
        [elements] =>  {
"b2c4ecaa-f68f-4a5c-a551-339aa8f01421":  {

},

"e5e53240-1d5a-4b50-ad7d-cfa00f33badd":  {
    "0":  {
        "value": "AEROSPORT"
    }
},

"d7c903a8-fa15-4620-9d9b-2238cb48fd5c":  {
    "0":  {
        "value": ""
    }
}

    )

因此，基本上，对数组进行排序时，第一个元素应该是现在的位置，然后是第三个元素，然后是第二个元素，所以它看起来像这样:

So basically the array, when sorted, should have the first element be where it is now, followed by the third element, followed by the second, so it would look like this:

[0] => stdClass Object
    (
        [id] => 12
        [created_by] => 776
        [searchable] => 1
        [elements] =>  {
"b2c4ecaa-f68f-4a5c-a551-339aa8f01421":  {

},


"e5e53240-1d5a-4b50-ad7d-cfa00f33badd":  {
    "0":  {
        "value": "Aeronca"
    }
},

"d7c903a8-fa15-4620-9d9b-2238cb48fd5c":  {
    "0":  {
        "value": "L-3B"
    }
}

    )

[1] => stdClass Object
    (
        [id] => 13
        [created_by] => 776
        [searchable] => 1
        [elements] =>  {
"b2c4ecaa-f68f-4a5c-a551-339aa8f01421":  {

},

"e5e53240-1d5a-4b50-ad7d-cfa00f33badd":  {
    "0":  {
        "value": "AEROSPORT"
    }
},

"d7c903a8-fa15-4620-9d9b-2238cb48fd5c":  {
    "0":  {
        "value": ""
    }
}

    )

[2] => stdClass Object
    (
        [id] => 21
        [created_by] => 776
        [searchable] => 1
        [elements] =>  {
"b2c4ecaa-f68f-4a5c-a551-339aa8f01421":  {

},


"e5e53240-1d5a-4b50-ad7d-cfa00f33badd":  {
    "0":  {
        "value": "BEECHCRAFT"
    }
},

"d7c903a8-fa15-4620-9d9b-2238cb48fd5c":  {
    "0":  {
        "value": "N-35"
    }
}

    )

请记住，实际的数组要复杂得多，并且数组中包含近1,000个元素，因此希望我使用的任何方法都可以最大程度地减少服务器上的负载.

Keep in mind that the actual array is far more complex, and contains close to 1,000 elements in the array, so hopefully whatever method I use would minimize load on the server.

推荐答案

您要创建自己的比较器函数并使用使用排序进行排序.

You want to create your own comparator function and use usort for sorting.

例如:

function myComparator($a, $b) {
    return  $a->someValue - $b->someValue;
}

在php.net中解释的返回值:

The return value explained in php.net:

在代码中要对数组进行排序的某个位置:

And somewhere in your code where you want to sort the array:

usort($arrayOfObjects, 'myComparator');

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