class_tests.inc

<?php

/*
  This code is part of FusionDirectory (http://www.fusiondirectory.org/)
  Copyright (C) 2003-2010  Cajus Pollmeier
  Copyright (C) 2011  FusionDirectory

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*/

/*! \brief This class provides various test functions
 *
 * This class provides various test functions. It enables to check
 * if a given value is:
 *
 * - a phone numnber
 * - a DNS name
 * - an URL
 * etc.
 *
 * The functions need to be handled with care, because they are not as strict
 * as one might expect.
 */
class tests {

  /*! \brief Test if the given string is a phone number */
  public static function is_phone_nr($nr)
  {
    if ($nr == ""){
      return (TRUE);
    }

    return preg_match ("/^[\/0-9 ()+*-]+$/", $nr);
  }


  /*! \brief Test if the given string contains characters allowed in a DNS record name */
  public static function is_dns_name($str)
  {
    return(preg_match("/^[a-z0-9\.\-_]*$/i",$str));
  }


  /*! \brief Test if the given string contains characters allowed in a hostname */
  public static function is_valid_hostname($str)
  {
    return(preg_match("/^[a-z0-9\.\-]*$/i",$str));
  }


  /*! \brief Test if the given string is an URL */
  public static function is_url($url)
  {
    if ($url == ""){
      return (TRUE);
    }

    return preg_match ("/^(http|https):\/\/((?:[a-zA-Z0-9_-]+\.?)+):?(\d*)/", $url);