Delete directory and files recursive

delete.php

<?php

$dir = __DIR__ . '/data/folder-to-delete';

$it = new RecursiveDirectoryIterator($dir, RecursiveDirectoryIterator::SKIP_DOTS);
$files = new RecursiveIteratorIterator($it,
             RecursiveIteratorIterator::CHILD_FIRST);
foreach($files as $file) {
    if ($file->isDir()){
        rmdir($file->getRealPath());
    } else {
        unlink($file->getRealPath());
    }
}
rmdir($dir);