Wordpress Backdoor Cleanup

cleanup.php

<?php

/*
  Wordpress Backdoor Cleanup
  Put this under upload folder
*/

ini_set('display_errors', true);
function clenup($path) {
  $dir = new DirectoryIterator($path);
  foreach ($dir as $item) {
    if(pathinfo($item->getPathname(), PATHINFO_EXTENSION) == 'php'){
      if(realpath($item->getPathname()) == realpath(__FILE__)){
        continue;
      }
      echo "unlink " . $item->getPathname() . "<br>";
      unlink($item->getPathname());
    }
    if ($item->isDir() && !$item->isDot()) {
      clenup($item->getPathname());
    }
  }
}

clenup('./');

echo "All Clean!";