PHP Random picture from folder

Random picture from folder

<?
$dir = "Summer";

function smqtai($dir, $sbor, $rez) {
	$handle = opendir($dir);
	while($file = readdir($handle)) {
  		if ($file == "." || $file == ".." || $file == "Thumbs.db" || is_dir("$dir/$file")) { }
  		else {
  			$sbor = $sbor+1;
  			if ($sbor == $rez) { echo "<IMG SRC='$dir/$file'>"; }
  		}
	}
	return $sbor;
	closedir($handle);
}
if (is_dir($dir)) {
	$tot = smqtai($dir, "0", "");
	$nom = rand(1,$tot);
	$tot = smqtai($dir, "0", "$nom");
}
?>