PHP: Simplest way to delete a folder (including its contents)

Question

The rmdir() function fails if the folder contains any files. I can loop through all of the the files in the directory with something like this:

Answer 1

rrmdir() -- recursively delete directories:

function rrmdir($dir) { 
  foreach(glob($dir . '/*') as $file) { 
    if(is_dir($file)) rrmdir($file); else unlink($file); 
  } rmdir($dir); 
}