<?php
//Find Folders for Folder Array
$dir = "PICTURES/";
$name = array();
$pictures = array();
if (is_dir($dir)) {
    if ($dh = opendir($dir)) {
        while   (($folder = readdir($dh)) !== false) {
            if ($folder !== "." && $folder !== "..") {
                $name[] = $folder;
                                                     }
                                                     }
                            }
                  }
//Folder Array
$count = count($name);
$count2 = $count -1;
$var1 = rand(0, $count2);
$dir2 = "PICTURES/$name[$var1]";
$dir3 = "$name[$var1]";

echo "<img src='$dir2'>";
?>