Dynamically populate the theme options array

I’ve created a theme options panel that has a pulldown menu to allow the user to select a different stylesheet. Until now, I’ve been hardcoding the stylesheet selections, but I now want to dynamically populate them.

Since each of my styles has its own images inside my theme’s main images directory, I just want to parse this directory and populate my options array with the folder name of each folder.

I’m sure my method is flawed, but it works up until the point of actually dynamically populating the array.

Here’s the hardcoded version…

“options” => array(“folder one” => “folder1”, “folder two” => “folder2”)),

And here’s my dynamic version that almost works…

$mydir = getDirectory(‘../wp-content/themes/mytheme/images/’);

“options” => array($mydir)),

function getDirectory( $path = '.', $level = 0 )
{
// Directories to ignore when listing output.
$ignore = array( '.', '..' );

// Open the directory to the handle $dh
$dh = @opendir( $path );

// Loop through the directory
while( false !== ( $file = readdir( $dh ) ) )
        {
        // Check that this file is not to be ignored
        if( !in_array( $file, $ignore ) )
                {
                // Show directories only
                if(is_dir( "$path/$file" ) )
                        {
                        // Re-call this same function but on a new directory.
                        // this is what makes function recursive.
                        //echo $file." => ".$file. ", ";
                        // need to return the folders in the form expected by the array. Probably could just add the items directly to the array?
                        $mydir2=$mydir2.'"'.$file.'" => "'.$file. '", ';
                        getDirectory( "$path/$file", ($level+1) );
                }
        }
}
return $mydir2;
// Close the directory handle
closedir( $dh );
}

What am I missing???