sam-ngu

<?php 

$folderPath = __DIR__ . '/path/to/folder/';

try {
    $dirIterator = new \RecursiveDirectoryIterator($folderPath);
    /** @var \RecursiveDirectoryIterator | \RecursiveIteratorIterator $it */
    $it = new \RecursiveIteratorIterator($dirIterator);

    // the valid() method checks if current position is valid eg there is a valid file or directory at the current position