特定ディレクトリ配下をrecursiveで探索 php directory

alldirectories.php

<?php
$path = 'node_modules';
function getFileList($dir) {
    $iterator = new RecursiveDirectoryIterator($dir);
    $iterator = new RecursiveIteratorIterator($iterator);

    $list = array();
    foreach ($iterator as $fileinfo) { // $fileinfoはSplFiIeInfoオブジェクト
        if ($fileinfo->isFile() && preg_match('/\.js$/', $fileinfo->getPathname())) {
            $list[] = $fileinfo->getPathname();
        }
    }

    return $list;
}
var_dump(getFileList($path));