Pimcore\Tool::isValidPath PHP Method

    public static function isValidPath($path)
    {
        return (bool) preg_match("/^[a-zA-Z0-9_~\\.\\-\\/ ]+\$/", $path, $matches);
    }

 /**
  * @static
  * @param $path
  * @return bool
  */
 public static function pathExists($path, $type = null)
 {
     $path = Element\Service::correctPath($path);
     try {
         $object = new AbstractObject();
         if (\Pimcore\Tool::isValidPath($path)) {
             $object->getDao()->getByPath($path);
             return true;
         }
     } catch (\Exception $e) {
     }
     return false;
 }