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    <?php
function getFiles($dir) 
{
    static $files;
    
    $allowed_file_extensions = array();
    $allowed_file_extensions[] = 'gif';
    $allowed_file_extensions[] = 'bmp';
    $allowed_file_extensions[] = 'jpg';
    $allowed_file_extensions[] = 'jpeg';
    $allowed_file_extensions[] = 'png';
    $allowed_file_extensions[] = 'GIF';
    $allowed_file_extensions[] = 'BMP';
    $allowed_file_extensions[] = 'JPG';
    $allowed_file_extensions[] = 'JPEG';
    $allowed_file_extensions[] = 'PNG';     
    
    $len = strlen($dir);
    if($dir{$len-1} == '/')
        $dir = substr($dir, 0, $len-1);
        
    
    if(!is_dir($dir))
        return false;
        
    $open = @opendir($dir);
    
    if(!$open) 
        return false;
    
    while($file = readdir($open)) {         
        if($file == "." || $file == "..")     
            continue;
        
        if(is_dir($dir.'/'.$file)) {
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