function rmdir_recursive($dir){
  $files = scandir($dir);
  foreach ($files as $file) {
    if ($file == '.' OR $file == '..') continue;
    $file = "$dir/$file";
    if (is_dir($file)) {
      rmdir_recursive($file);
      rmdir($file);
    } else {
      unlink($file);
    }
  }
  rmdir($dir);
}

http://bsd-noobz.com/blog/how-to-remove-directories-recursively-with-php

This function removes a directory and its contents.
Use with careful, no undo!

How to Remove Directories Recursively with PHP -  updated method

file

PHP