sortowanie katalogow w skrypcie Opcje

[nastier]

jestem dosc zielony w php i mam skrypt napisany przez kolege, ktory odmowil mi dalszej wspolpracy.

czy ktos moze mi powiedziec w jaki sposob dodac do skryptu (galeria) opcje sortowania katalogow ze zdjeciami (od a do z, od 0 do 9)?

oto glowny plik galerii:

Kod

<?
//require('galeria/config.php');
define("GDIR", "galeria/"); //gdzie znajduja sie foldery ze zdjeciami
define("FNAME", "../galeria.php"); //gdzie znajduja sie foldery ze zdjeciami
define("COLS", 2); //kolumn
define("ROWS", 20); //max wierszy
class gallery
{
    
    function show_tree($node = '', $depth = -1, $ground = 0)
    {
        $return = '';
        $dname = Array();
        $dh = opendir(GDIR.$node);
        $spacer = '';
        for($sp = 1; $sp < $ground - $depth; $sp++)
        {
            $spacer .= '   ';
        }
        while($file = readdir($dh))
        {
            if ($file != "." && $file != ".." && is_dir(GDIR.$node.$file))
            {
                if(file_exists(GDIR.$node.$file.'/'.$file.'.txt'))
                {
                    $label = file(GDIR.$node.$file.'/'.$file.'.txt');
                    $return .= $spacer.'<a href="'.FNAME.'?cat='.$node.$file.'/">'.$label[0].'</a><br>'."\n";
                }
                else
                {
                    $return .= $spacer.'<a href="'.FNAME.'?cat='.$node.$file.'/">'.$file.'</a><br>'."\n";
                }
                if($depth != 0)
                {
                    $return .= $this -> show_tree($node.$file.'/', $depth - 1);
                }
            }
        }
        return $return;
    }
    
    function is_image($f_name)
    {
        if(in_array(strtolower(substr($f_name,-3)), array('jpg', 'gif', 'png')))
        {
            return true;
        }
        else
            return false;
        
    }
    
    function show_thumbnails($node, $page = 0)
    {
        $images = array();
        $dh = opendir(GDIR.$node);
        while($file = readdir($dh))
        {
            if ($file != "." && $file != ".." && !is_dir(GDIR.$node.$file) && $this -> is_image($file))
            {
                $images[] = $file;
            }
        }

        $total = count($images);

        if($total > 0)
        {
            sort($images);
            $per_page = COLS*ROWS;
            if($total > $per_page)
            {
                $page_list = "<br> \n";
                $pages = ceil($total/$per_page);
                for($i = 0; $i < $pages; $i++)
                {
                    $p = $i+1;
                    if($i != $page)
                    {
                        
                        $page_list .= ' <a href="'.FNAME.'?cat='.$node.'&page='.$i.'">'. $p .'</a> ';
                    }
                    else
                    {
                        $page_list .= ' ['.$p.'] ';
                    }
                }
                $return['p_list'] = $page_list."<br> \n";
            }
            else
            $return['p_list'] = "";
            $images_table = "<center><table width=95%border=0cellpadding=2 cellspacing=2>\n";
            for($j = $page * $per_page, $r = 0; $j < min(($page + 1) * $per_page, $total); $j++, $r++)
            {
                $size = getimagesize (GDIR.$node.$images[$j]);
                if($size[1] < $size[0])
                {
                       $height = 86;
                    $width = 130;
                    $thumbnail = ''.GDIR.'thumbs.php?image='.$node.$images[$j].'&newheight=86&newwidth=130&width='.$size[0].'&height='.$size[1].'';
                }
                else
                {
                    $height = 130;
                    $width = 86;
                    $thumbnail = ''.GDIR.'thumbs.php?image='.$node.$images[$j].'&newheight=130&newwidth=86&width='.$size[0].'&height='.$size[1].'';
                }
                    
            
                
                $image_cell = '';
                if($r == 0)
                    $image_cell = '<tr>'."\n";
                    $x =  $size[0] + 0;
                    $y =  $size[1] + 30;
                    $image_cell .= '<td align=center>
                    <a href="#" onclick="window.open(\''.GDIR.'popup.php?node='.$node.'&img='.$j.'&w='.$size[0].'&h='.$size[1].'&t='.$j.'\',\''.$j.'\',\'width='. $x .',height='. $y .',directories=no,location=no,menubar=no,scrollbars=no,status=no,toolbar=no,re
sizable=no\');return false" target="_blank">
                    <img class="cienie" src="'.$thumbnail.'" border=0>
                    </a>
                    </td>'."\n";
                if($r == COLS - 1)
                {
                    $image_cell .= '</tr>'."\n";
                    $r = -1;
                }
                $images_table .= $image_cell;
            }
            $images_table .= '</table></center>';
        
            $return['images'] = $images_table;
        }
        else
        {
            $return['images'] = '';
            $return['p_list'] = '';
        }
            
        return $return;
    }
    
    function tracker($node)
    {
        $current = '';
        $return = '<b>galeria</b> » ';
        $path = explode("/", $node);
        $last = count($path) - 2;
        foreach($path as $n => $folder)
        {
            if(strlen($folder) > 0)
            {
                $current.=$folder."/";
                if(file_exists(GDIR.$current.$folder.'.txt'))
                {
                    $label = file(GDIR.$current.$folder.'.txt');
                    if($n != $last)
                    $return .= '<a href="'.FNAME.'?cat='.$current.'">'.$label[0].'</a> » ';
                    else
                    $return .= $label[0].' ';
                }
                else
                {
                    if($n != $last)
                    $return .= '<a href="'.FNAME.'?cat='.$current.'">'.$folder.'</a> » ';
                    else
                    $return .= $folder.' ';
                }
            }
        }
        echo $return."<br> \n";
    }
    
    function menu($node)
    {
        $path = explode("/", $node);
        
        return $this -> menu_2($path, '', 0);
    }
    
    function menu_2($path, $node = '', $lvl = 0)
    {
        $return = '';
        $dh = opendir(GDIR.$node);
        $spacer = '';
        for($sp = 0; $sp < $lvl; $sp++)
        {
            $spacer .= '   ';
        }
        while($file = readdir($dh))
        {
            if ($file != "." && $file != ".." && is_dir(GDIR.$node.$file))
            {
                if(file_exists(GDIR.$node.$file.'/'.$file.'.txt'))
                {
                    $label = file(GDIR.$node.$file.'/'.$file.'.txt');
                    $return .= $spacer.'<a href="'.FNAME.'?cat='.$node.$file.'/">'.$label[0].'</a><br>'."\n";
                }
                else
                {
                    $return .= $spacer.'<a href="'.FNAME.'?cat='.$node.$file.'/">'.$file.'</a><br>'."\n";
                }
                if(in_array($file, $path))
                {
                    $return .= $this -> menu_2($path, $node.$file.'/', $lvl + 1);
                }
            }
        }
        return $return;
    }
}

$gal = new gallery;
if(isset($cat))
$dir = $cat;
else
$dir = '';


echo $gal -> tracker($dir);
echo $gal -> menu($dir);

if(!isset($page))
$page = 0;
if(isset($cat))
{

$all = $gal -> show_thumbnails($cat, $page);

echo $all['p_list'];

echo $all['images'];
}

//print_r($gal -> show_tree($cat, 0));



?>