sort folders by time php

Question

This code shows a list of folders.

How can I sort these folders by time (last changed) ?

function folderlist(){
  $startdir = './';
  $ignoredDirectory[] = '.'; 
  $ignoredDirectory[] = '..';
   if (is_dir($startdir)){
       if ($dh = opendir($startdir)){
           while (($folder = readdir($dh)) !== false){
               if (!(array_search($folder,$ignoredDirectory) > -1)){
                 if (filetype($startdir . $folder) == "dir"){
                       $directorylist[$startdir . $folder]['name'] = $folder;
                       $directorylist[$startdir . $folder]['path'] = $startdir;
                   }
               }
           }
           closedir($dh);
       }
   }
return($directorylist);
}

$folders = folderlist();
    foreach ($folders as $folder){
    $path = $folder['path'];
    $name = $folder['name'];

echo '<li><a href="' .$path .'index.php?imgdir=' .$name . '" class="style1"><font face="Tahoma" class="ws8"><B>' . $name . '</B></a><br /></li>';
  }
?>

There should be a question here, but the poor grammar and lack of punctuation makes it hard to find. — Daniel Saban, Nov 19 '12 at 13:02

Olaf Dietsche · Accepted Answer · 2012-11-19T15:03:15.877

2

You must include filemtime() in your $directoryList[] and then sort your array by the mtime.

function cmp_mtime_reverse($a, $b) {
    if ($a['mtime'] == $b['mtime'])
        return 0;

    if ($a['mtime'] > $b['mtime'])
        return -1;

    return 1;
}

function folderlist() {
    $startdir = './';
    $ignoredDirectory[] = '.'; 
    $ignoredDirectory[] = '..';
    if (is_dir($startdir)) {
        if ($dh = opendir($startdir)) {
            while (($folder = readdir($dh)) !== false) {
                if (!(array_search($folder,$ignoredDirectory) > -1)) {
                    if (filetype($startdir . $folder) == "dir") {
                        $mtime = filemtime($startdir . $folder);
                        $directorylist[$startdir . $folder]['name'] = $folder;
                        $directorylist[$startdir . $folder]['path'] = $startdir;
                        $directorylist[$startdir . $folder]['mtime'] = $mtime;
                        $directorylist[$startdir . $folder]['files'] = count_files($startdir . $folder);
                    }
                }
            }

            closedir($dh);
        }
    }

    uasort($directorylist, 'cmp_mtime_reverse');
    return $directorylist;
}

See Sorting Arrays and filemtime for more information.

To count files inside a folder

function count_files($startdir) {
    $ignoredDirectory[] = '.'; 
    $ignoredDirectory[] = '..';
    $n = 0;
    if ($dh = opendir($startdir)) {
        while (($file = readdir($dh)) !== false) {
            if (!(array_search($file, $ignoredDirectory) > -1)) {
                $n++;
            }
        }

        closedir($dh);
    }

    return $n++;
}

and then add an entry in your function folderlist()

$directorylist[$startdir . $folder]['files'] = count_files($startdir . $folder);

edited Nov 19 '12 at 15:03

answered Nov 19 '12 at 13:08

Olaf Dietsche

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@user1835767 I added your complete example. – Olaf Dietsche Nov 19 '12 at 13:20
olaf i want a count files inside the folder how can i edit in this code example folderx (23 files) folderz(2 files) – user1835767 Nov 19 '12 at 13:29
@user1835767 See my updated post. I also modified `folderList()`, because in the previous version two folders with the same mtime would be shown as one. – Olaf Dietsche Nov 19 '12 at 13:48
your 1st code is perfect i think becz in this code lastest folder show on last – user1835767 Nov 19 '12 at 14:12
@user1835767 I fixed the sort order and added the additional line to `folderList()` – Olaf Dietsche Nov 19 '12 at 15:06
i change my code page show errorFatal error: Call to undefined function count_files() in /home/sam/public_html/albums//dirs.php on line 26 – user1835767 Nov 19 '12 at 15:17
i think in echo line countfile value is not there thats why this error coming – user1835767 Nov 19 '12 at 15:20
@user1835767 Have you included the function `count_files()` in your PHP source? – Olaf Dietsche Nov 19 '12 at 15:38
yes i include it already but now directory is fine but file count is not working which value i put it on echo line? i put it ' . $count_files . ' but no value return – user1835767 Nov 19 '12 at 15:39
@user1835767 In your loop, you can insert `'' . $folder['files'] . ''` – Olaf Dietsche Nov 19 '12 at 16:14
@user1835767 You can also use `'' . count_files('/path/to/folder') . ''` – Olaf Dietsche Nov 19 '12 at 16:40
is it possible count only specific format i want only .jpg file count – user1835767 Nov 19 '12 at 18:20
@user1835767 Of course, you can extend `count_files()` however you like. Insert a test in the loop and you can restrict the type of files. If you need help for that, please open a new question. – Olaf Dietsche Nov 19 '12 at 19:06
@user1835767 I'm sure, there are lots of experts willing to help. I'm now away for some time, but I will look into it later. – Olaf Dietsche Nov 19 '12 at 19:43

sort folders by time php

1 Answers1