使用PHP按时间对目录中的文件和文件夹进行排序？

Question

我正在尝试使用 PHP 对目录中的所有文件和文件夹进行排序。

我目前可以获取目录的所有内容（文件和文件夹）并显示在我的页面上。

但是，在按上次上传/创建的时间对文件和文件夹进行排序方面对我来说绝对没有任何用处，这让我陷入困境！

这是我的全部代码：

<?php

$folders = "";

$fileExt = "<i style='font-size:18px;' class='fa fa-folder-open'></i>";

function human_filesize($bytes, $decimals = 2) {
    $size = array('B', 'kB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB');
    $factor = floor((strlen($bytes) - 1) / 3);
    return sprintf("%.{$decimals}f", $bytes / pow(1024, $factor)) . @$size[$factor];
}

$all_doc = "";
$i = 0;
$filesize = "";

$timeFile = "";
if (isset($_GET['dir']) && ($_GET['user'])) {
    $directory = $_GET['dir'];
    $Uid = $_GET['user'];

    //////WE GET THE DIRECTORIES AND FILES HERE///////////////
    $dir = "../" . $directory . "";
    $dirN = substr($dir, strpos($dir, "/") + 1);
    $files = scandir($dir);

    function newest($a, $b) {
        return (filemtime($a) > filemtime($b)) ? -1 : 1;
    }

    usort($files, "newest"); // sort the array by calling newest()

    $TIMEANDATE = date("F d Y h:i A");
    foreach ($files as $file) {
        include "../config/connect.php";
        $result = $db_conx->query("SELECT * FROM processed WHERE fileName='$file' AND userid='$Uid'");
        $row = $result->fetch_array(MYSQLI_BOTH);
        $proces = $row["proces"];
        $invoice = $row["invoice"];

        $date = filemtime('' . $dir . '/' . $file . '');


        if ($file != '.' && $file != '..') {



            $whatIWant = substr(strrchr($file, '.'), 1);



            if ($whatIWant == "jpg" || $whatIWant == "png" || $whatIWant == "gif" || $whatIWant == "JPG" || $whatIWant == "JPEG" || $whatIWant == "jpeg") {
                $fileExt = '<i style="font-size:18px;" class="fa fa-file-image-o"></i>';
            } else {
                $fileExt = "<i style='font-size:18px;' class='fa fa-folder-open'></i>";
            }
            $filesize = human_filesize(filesize('' . $dir . '/' . $file . ''));
            $key = @filemtime('' . $dir . '/' . $file . '');



            if ($whatIWant == "pdf" || $whatIWant == "docx" || $whatIWant == "xlsx" || $whatIWant == "xls" || $whatIWant == "zip" || $whatIWant == "doc" || $whatIWant == "jpg" || $whatIWant == "png" || $whatIWant == "gif" || $whatIWant == "txt" || $whatIWant == "psd") {


                $timeFile = "" . $dir . "/" . $file . "";
                if ($proces == 'yes') {
                    $all_doc .= "<tr>
                        <td><input  type='checkbox'/></td>
                        <td>" . $fileExt . "&nbsp;<a class='defaults'  href='" . $dir . "/" . $file . "'>" . $file . "</a>&nbsp;&nbsp;<a href='move.php?movef=" . $dirN . "/" . $file . "&user=" . $Uid . "'><i title='Move' class='fa fa-refresh'></i></a>&nbsp;&nbsp;
    <a href='folder.php?del=" . $dirN . "/" . $file . "'><i title='Delete' class='fa fa-times'></i>
    </a></td>           


                        <td>" . $invoice . "</td>
                        <td ><a style='color:#0C0;' href='process.php?nopro=" . $file . "&user=" . $Uid . "&loc=" . $dirN . "'>Processed (Click here to un-process)</a></td>
                        <td>" . date('F d Y h:i A', $date) . "</td>
                        <td>" . $filesize . "</td>
                        </td>
                    </tr>";
                } else {
                    $all_doc .= "<tr>
                        <td><input  type='checkbox'/></td>
                        <td>" . $fileExt . "&nbsp;<a class='defaults'  href='" . $dir . "/" . $file . "'>" . $file . "</a>&nbsp;&nbsp;<a href='move.php?movef=" . $dirN . "/" . $file . "&user=" . $Uid . "'><i title='Move' class='fa fa-refresh'></i></a>&nbsp;&nbsp;
    <a href='folder.php?del=" . $dirN . "/" . $file . "'><i title='Delete' class='fa fa-times'></i>
    </a></td>           
                        <td>N/A</td>
                        <td >
                        <a style='color:#F00;' href='process.php?pro=" . $file . "&user=" . $Uid . "&loc=" . $dirN . "&gback=" . $goBack . "'>Not Processed (Click here to Process)</a>
                        <!--<form action='process.php' method='get' >
                        <input type='hidden' name='pro' value='" . $file . "' />                    
                        <input type='hidden' name='user' value='" . $Uid . "' />
                        <input type='hidden' name='loc' value='" . $dirN . "' />
                        <input class='notPro' type='submit' value='Not Processed (Click here to Process)' />
                        </form>-->
                        </td>
                        <!--<td>" . date('F d Y h:i A', $date) . "</td>-->
                        <td>" . date("F d Y H:i:s", filemtime($timeFile)) . "</td>
                        <td>" . $filesize . "</td>

                        </td>
                    </tr>";
                }
            } else {
                $all_doc .= "<tr>
                        <td><input  type='checkbox'/></td>
                        <td>" . $fileExt . "&nbsp;<a class='defaults'  href='folder.php?dir=" . $dirN . "/" . $file . "&user=" . $Uid . "'>" . $file . "</a>&nbsp;&nbsp;<a href='move.php?movef=" . $dirN . "/" . $file . "&user=" . $Uid . "'><i title='Move' class='fa fa-refresh'></i></a>&nbsp;&nbsp;
    <a href='folder.php?del=" . $dirN . "/" . $file . "'><i title='Delete' class='fa fa-times'></i>
    </a></td>

    <td>N/A</td>
                        <td></td>

                        <td>" . date('F d Y h:i A', $date) . "</td>
                        <td>" . $filesize . "</td>
                        </td>
                    </tr>";
            }
            $i++;
        }
    }
}
?>

很抱歉代码太多，但我必须将所有代码都发送给您，以便您知道它是如何工作的！

正如您在我的代码中看到的，我正在尝试对内容进行如下排序：

$dir = "../".$directory."";
$dirN = substr($dir, strpos($dir, "/") + 1);
$files = scandir($dir);

function newest($a, $b)
{
    return (filemtime($a) > filemtime($b)) ? -1 : 1;
}



usort($files, "newest"); // sort the array by calling newest()

但是文件和文件夹的输出到处都是。请查看附件图片以了解它目前如何显示文件和文件夹：

有人可以就这个问题提出建议吗？

任何帮助将不胜感激。

编辑： 这个问题不是按Date 排序的。我需要按TIME 对文件进行排序。

Answer 1

在您的 for 循环中，您可以使用获取文件时间

$date = filemtime('' . $dir . '/' . $file . '');

在此代码中，$file 是数组中的文件名。

首先运行的usort 函数作用于$files 数组，并使用其裸值。显然，该数组不包含目录名称。所以很可能，在你的newest 函数中调用filemtime 将失败并一直返回false。所以返回值永远没有用处。

更好的方法是构造一个包含完整文件路径的数组。然后，该数组可以更轻松地用于排序和进行其他处理。

或者，您可以创建一个嵌套数组或对象数组，其中每个项目都包含文件名、路径、文件日期以及可能的其他信息。这样，您可以轻松地将构建数组、排序和输出信息的过程分开。排序和输出可以使用对象中的信息，因此您不必多次从磁盘读取文件日期。

<?php
$dir = 'c:\\test\\'; // Or whatever you get your dir from..

$filenames = scandir($dir);
$files = array();

// Build an array with all the meta information you need.
// In this case, I use a nested array (array of arrays),
// but you could as well use objects too.
foreach ($filenames as $filename) {

  $fullpath = $dir . $filename;

  $file = array(
    'filename' => $filename,
    'fullpath' => $fullpath,
    'filedatetime' => filemtime($fullpath)
  );
  $files[] = $file;
}

// Sort the array. Note you can use an inline (anonymous) callback
// function if you have a modern version of PHP.
usort($files, function($file1, $file2) {
  return $file1['filedatetime'] - $file2['filedatetime'];
});

// Output a table of file information by iterating over the enriched 
// files array. In this stage all the info is there, and you don't need 
// to call any file I/O functions.
?>
<table>
  <tr><th>File</th><th>Time</th><th>Path</th></tr>

<?php
foreach ($files as $file) { ?>
  <tr>
    <td><?php echo $file['filename']; ?></td>  
    <td><?php echo date('c', $file['filedatetime']) ?></td>
    <td><?php echo $file['fullpath']; ?></td>
  </tr>
<?php } ?>

</table>

<?php