Proyectos de Subversion Moodle

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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
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// MOODLE_INTERNAL check intentionally missing to allow this to be used more widely!
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/**
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 * A set of PHP-compatible convenience functions to check Moodle minimum PHP version in
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 * a unified place.
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 *
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 * PLEASE NOTE: This file is made to be both php-version compatible and without requirement on
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 * any moodle functions or installation so it can be used in installer or incompatible PHP versions.
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 *
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 * @package    core
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 * @copyright  2017 Dan Poltawski <dan@moodle.com>
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 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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 */
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/**
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 * Require our minimum php version or halt execution if requirement not met.
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 * @return void Execution is halted if version is not met.
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 */
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function moodle_require_minimum_php_version() {
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    // PLEASE NOTE THIS FUNCTION MUST BE COMPATIBLE WITH OLD UNSUPPORTED VERSIONS OF PHP!
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    moodle_minimum_php_version_is_met(true);
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}
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/**
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 * Tests the current PHP version against Moodle's minimum requirement. When requirement
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 * is not met returns false or halts execution depending $haltexecution param.
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 *
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 * @param bool $haltexecution Should execution be halted when requirement not met? Defaults to false.
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 * @return bool returns true if requirement is met (false if not)
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 */
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function moodle_minimum_php_version_is_met($haltexecution = false) {
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    // PLEASE NOTE THIS FUNCTION MUST BE COMPATIBLE WITH OLD UNSUPPORTED VERSIONS OF PHP.
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    // Do not use modern php features or Moodle convenience functions (e.g. localised strings).
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    $minimumversion = '8.1.0';
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    $moodlerequirementchanged = '4.4';
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    if (version_compare(PHP_VERSION, $minimumversion) < 0) {
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        if ($haltexecution) {
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            $error = "Moodle {$moodlerequirementchanged} or later requires at least PHP {$minimumversion} "
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                . "(currently using version " . PHP_VERSION .").\n"
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                . "Some servers may have multiple PHP versions installed, are you using the correct executable?\n";
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            // Our CLI scripts define CLI_SCRIPT before running this test, so make use of
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            // to send error on STDERR.
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            if (defined('CLI_SCRIPT') && defined('STDERR')) {
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                fwrite(STDERR, $error);
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            } else {
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                echo $error;
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            }
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            exit(1);
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        } else {
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            return false;
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        }
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    }
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    return true;
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}
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// DO NOT ADD EXTRA FUNCTIONS TO THIS FILE!!
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// This file must be functioning on all versions of PHP, extra functions belong elsewhere.