whmcsDNSManager/modules/addons/DNSManager2/mgLibs/custom/helpers/FileHelper.php

<?php

namespace MGModule\DNSManager2\mgLibs\custom\helpers;

class FileHelper {
    public static function listFilesFromDirectoryAndSubfolders($directory) {
        if(!file_exists($directory)) return array();
        $di = new \RecursiveDirectoryIterator($directory);
        $out = array();
        foreach (new \RecursiveIteratorIterator($di) as $filename => $file) {
            $out[basename($filename)] = $filename;
        }
        return $out;
    }
    
    public static function getClassNamesFromFilesList($file_list) {
        $out = array();
        foreach($file_list as $file_name => $file_patch) {
            if(($name = self::getClassNameFromFileName($file_name)) !== false) {
                $out[] = $name;
            }
        }
        return $out;
    }
    
    public static function getClassNameFromFileName($file_name) {
        preg_match('@class\.(.*)\.php@', $file_name, $matches);
        if(isset($matches[1])) {
            return $matches[1];
        }
        return false;
    }
    
    public static function listFoldersFromDirectory($directory) {
        if(!file_exists($directory)) return array();
        $di = new \DirectoryIterator($directory);
        $out = array();
        foreach (new \IteratorIterator($di) as $filename => $file) {
            if($file->isDir() && !$file->isDot())
                $out[] = $file->getFilename();
        }
        return $out;
    }
}