<?php

class Helpers {
  
  // Add trailing / to path if missing
  public static function end_dir($dir) {
    if (mb_substr($dir, -1) == '/' ) {
      return $dir;
    } else {
      return $dir.'/';
    }
  }

  // Check if a Variable is an Integer and in the defined Range
  public static function validate_int($int, $min, $max) {
    if (is_string($int) && !ctype_digit($int)) {
      return false; // contains non digit characters
    }
    if (!is_int((int) $int)) {
      return false; // other non-integer value or exceeds PHP_MAX_INT
    }
    return ($int >= $min && $int <= $max);
  }

  // Check Search String for Valid Characters
  public static function validate_search($search) {
    if (!preg_match("#^[a-zA-Z0-9äöüÄÖÜ _\-\.\*\?\:\(\)\']+$#", $search)) {
      return false;
    } else {
      return true;
    }
  }

}

?>