PHP traverses and deletes entire directories and files

We can use RecursiveDirectoryIterator and RecursiveIteratorIterator to delete directories, subdirectories and files. The subdirectories will be deleted with the parent directory first

function cleanup_directory($dir) {
 $iter = new RecursiveDirectoryIterator($dir);
 foreach (new RecursiveIteratorIterator($iter, RecursiveIteratorIterator::CHILD_FIRST)
 as $f) {
 if ($f->isDir()) {
 rmdir($f->getPathname());
 } else {
 unlink($f->getPathname());
 }
 }
 rmdir($dir);
}

cleanup_directory('c:\wamp\junk');
?>

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