scandir() to sort by date modified

Question

I'm trying to make scandir(); function go beyond its written limits, I need more than the alpha sorting it currently supports. I need to sort the scandir(); results to be sorted by modification date.

I've tried a few solutions I found here and some other solutions from different websites, but none worked for me, so I think it's reasonable for me to post here.

What I've tried so far is this:

function scan_dir($dir)
{
    $files_array = scandir($dir);
    $img_array   = array();
    $img_dsort   = array();
    $final_array = array();

    foreach($files_array as $file)
    {
        if(($file != ".") && ($file != "..") && ($file != ".svn") && ($file != ".htaccess"))
        {
            $img_array[] = $file;
            $img_dsort[] = filemtime($dir . '/' . $file);   
        }
    }

    $merge_arrays = array_combine($img_dsort, $img_array);
    krsort($merge_arrays);

    foreach($merge_arrays as $key => $value)
    {
        $final_array[] = $value;    
    }

    return (is_array($final_array)) ? $final_array : false;
}

But, this doesn't seem to work for me, it returns 3 results only, but it should return 16 results, because there are 16 images in the folder.

Answer 1

function scan_dir($dir) {
    $ignored = array('.', '..', '.svn', '.htaccess');

    $files = array();    
    foreach (scandir($dir) as $file) {
        if (in_array($file, $ignored)) continue;
        $files[$file] = filemtime($dir . '/' . $file);
    }

    arsort($files);
    $files = array_keys($files);

    return ($files) ? $files : false;
}