слабаки! ))

static function isFolder($DestinationPath)
{
return is_dir($DestinationPath);
}



static function _testExtension( $filename, $extension )
{
if ( $extension == null)
return true;
$i=strlen($filename)-1;
for( ; $i >= 0; $i-- )
{
if ( $filename[$i] == '.' )
break;
}

if ( $filename[$i] != '.' )
return false;
else
{
$ext = substr( $filename, $i+1 );

if(is_array($extension))
return in_array($ext, $extension);
else
return ( strtolower($extension) == strtolower($ext) );
}
}



static function GetFilesInDirectory($dir, $extension = "")
{
if(!self::isFolder($dir))
return false;
if(substr($dir,-1)=='/')
$dir=substr($dir, 0, -1);
$dh = opendir($dir);
$files = array();
while (false !== ($filename = readdir($dh)))
{
if ( !is_dir($dir.'/'.$filename) && $filename != "." && $filename != ".." )
{
if (self:: _testExtension($filename,$extension) )
$files[] = $dir."/".$filename;
}
}
closedir($dh);
return $files;
}



static function randomFoto()
{
$input = self::GetFilesInDirectory('_site/random_foto/', array('gif', 'jpg', 'jpeg', 'png'));
$rand_keys = array_rand($input, 1);
return $input[$rand_keys];
}