////////////////////////////////////////////////////////////////////////////////
Copyright 2013, 2014, 2015, 2016 Newport Software Technologies, UNICEN

This file is part of XGAP.

XGAP is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

XGAP 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 Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License
along with XGAP.  If not, see <http://www.gnu.org/licenses/>.
////////////////////////////////////////////////////////////////////////////////

:encoding: utf-8
= Requirements =
:lang: en
:imagesdir: ../img/
:icons:
:iconsdir: ../img/icons

* PHP 5.2 or 5.3. Compatibility with 5.4+ is not tested
  (see https://sourceforge.net/p/xgap/tickets/80/[Ticket #80],
  https://sourceforge.net/p/xgap/tickets/112/[Ticket #112],
  https://sourceforge.net/p/xgap/tickets/117/[Ticket #117]).
* PHP extensions
** DOM
** Fileinfo, si `FormFileUpload::tipo()` is used
** Filter
** GD, if class `Imagen` is used
** Hash, if an application uses the default implementation of digital
signatures, or class `XgapCsrf`
** JSON
** Mail, if the generated applications send emails
** Mcrypt, if extension OpenSSL is not available
** Multibyte String
** OpenSSL, if an application uses the default implementation of digital
   signatures, or classes `XgapRand` or `XgapCsrf`
** PCRE
** Sessions
** SPL
** XML Parser
** XMLWriter
* PHP extensions only for generation
** XSL
* Oracle or PostgreSQL during the execution of the generated applications;
  a database is not necessary for application generation

Since version 2.16.0.643, XGAP provides a page that allows to check the
compatibility of the environment with these requirements: `/test_reqs.php`. The
footer of the generation page automatically includes links leading to this page,
one for each detected engine version.

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