PHP文件：文件夹AND子文件夹中的最新11个文件

Question

I have a directory with about 100 sub-directories (nested, some 3-4 deep). I need a small PHP script that will simply output a list of the 11 most recently added (or modified, as they are all pdf's) files, with a simple <br /> between each, each being linked to their URL.

I have found a few scripts that can do 1, or all, but have no clue how to even begin to limit to 11 specifically, or how to apply the exact href.

my alternate concern is server usage of this script, as it will be placed on a landing page that will see low usage, however every user will see it.

any ideas on resources to look into, or places to start, would be appreciated!

Answer 1

Not tested, but it should work:

<?php

function getFiles($dir)
{
    $arr=scandir($dir);
    $res=array();
    foreach ($arr as $item)
    {
        if ($item=='..' || $item=='.'){continue;}
        $path=$dir.'/'.$item;
        if (is_dir($path))
        {
            $res=array_merge($res,getFiles($path));
        }
        else
        {
            $res[$path]=filemtime($path);
        }
    }
    return $res;
}

$files=getFiles('directory');
arsort($files);
$files=array_slice(array_keys($files),0,11);
foreach ($files as $file)
{
    echo '<a href="'.$file.'">'.$file.'</a><br />';
}
?>

Answer 2

It would make more sense to provide a web-based upload interface. That way you would be able to keep the track of each new upload.

• user chooses category (each category/subcategory maps to a folder)
• upload file(s) to server
• script dump each filename, location and date in table row

Done. To get latest 11 file (in entire system or specific category/folder)you need only query database.

If your users need the ability to remove files too, just add web interface for that functionality too. And instead of deleting the file, just mark them as "hidden" in the table.

Besides solving the immediate problem, it will also provide additional possibilities for moderation, attribution of ownership and search .. and many more.

Answer 3

Use a RecursiveIterator. This is what it was designed for. I added an extra iterator named sortedIterator which extends SPLHeap, to sort by getMTime(), which is the modified time of the dir.

Change $path to be your full path to the directory.

$path = '.';

class sortedIterator extends SplHeap
{
    public function __construct(Iterator $iterator)
    {
        foreach ($iterator as $item) {
            $this->insert($item);
        }
    }
    public function compare($b,$a)
    {
        return strcmp($a->getMTime(), $b->getMTime());
    }
}

    $recursive = new RecursiveDirectoryIterator($path);
$sortByTime = new sortedIterator($recursive);
$i = 0;
foreach ($sortByTime as $file) {
        if($file->isDir()){
                $dirs[] = $file->getFilename();

                if($i++ == 9){
                        break;
                }
        }
}

print_r(implode("<br />", $dirs));

Edit, if you want Created Time, change getMTime to getCTime.

Answer 4

Use the code that lists all of them, but before outputting use a usort call to sort the files by decreasing modification time. Then, your loop should start with this:

$l = count($fileArray);
for( $i=0; $i<11 && $i<$l; $i++) {
    // output file entry
}