Question

通过HTTP上传图片时，我得到以下数组。如何按图像的大小按降序对它们进行排序，以便最大尺寸的图像上传第一个和最小的尺寸？

    Array
(
    "name" => Array
        (
            [0] => 1.jpg
            [1] => 2.jpg
            [2] => 3.jpg
        )

    ["type"] => Array
        (
            [0] => image/jpeg
            [1] => image/jpeg
            [2] => image/jpeg
        )

    ["tmp_name"] => Array
        (
            [0] => e7d31fc0
            [1] => qsdf0sdf
            [2] => s0sdfsfs
        )

    ["error"] => Array
        (
            [0] => 0
            [1] => 0
            [2] => 0
        )

    ["size"] => Array
        (
            [0] => 20000
            [1] => 30000
            [2] => 40000
        )
)

因此，输出应如下：

    Array
(
    "name" => Array
        (
            [0] => 3.jpg
            [1] => 2.jpg
            [2] => 1.jpg
        )

    ["type"] => Array
        (
            [0] => image/jpeg
            [1] => image/jpeg
            [2] => image/jpeg
        )

    ["tmp_name"] => Array
        (
            [0] => s0sdfsfs
            [1] => qsdf0sdf
            [2] => e7d31fc0
        )

    ["error"] => Array
        (
            [0] => 0
            [1] => 0
            [2] => 0
        )

    ["size"] => Array
        (
            [0] => 40000
            [1] => 30000
            [2] => 20000
        )
)

Answer 1

我想，你将在foreach循环中处理这些文件。

下面的代码怎么样？

//get files in array
$files = $_FILES['formFieldName'];
$sizes = $files['size'];
arsort($sizes); //sort in descending order but will preserve the keys
foreach ($sizes as $key => $size) {
    $fileName = $files['name'][$key];
    $fileSize = $size;
    $fileType = $files['type'][$key];
    $fileTmpName = $files['tmp_name'][$key];
    $fileError = $files['error'][$key];
}

Answer 2

根据Selim Mahmud的回答，我解决了这个问题：

-webkit-input-placeholder {
   color: white;
}

-moz-placeholder { /* Firefox 18- */
   color: white;  
}

-moz-placeholder {  /* Firefox 19+ */
   color: white;  
}

-ms-input-placeholder {  
   color: white;  
}

按大小值排序多维数组

2 个答案: