<?php

function _require_all($path, $depth = 0) {
  $files = array();
  $dir = opendir($path);
  while (($currentFile = readdir($dir)) !== false) {
    if ($currentFile == '.' || $currentFile == '..') {
      continue;
    }
    elseif (is_file($path . $currentFile)){
      $files = array_merge($files, array($path . $currentFile));
    }
    elseif (is_dir($path . $currentFile)) {
      $files = array_merge($files, _require_all($path . $currentFile . '/'));
    }
  }
  closedir($dir);

  return $files;
}