Toolbox::checkNewVersionAvailable PHP Méthode

    static function checkNewVersionAvailable($auto = true, $messageafterredirect = false)
    {
        global $CFG_GLPI;
        if (!$auto && !Session::haveRight('backup', Backup::CHECKUPDATE)) {
            return false;
        }
        if (!$auto && !$messageafterredirect) {
            echo "<br>";
        }
        //parse github releases (get last version number)
        $error = "";
        $json_gh_releases = self::getURLContent("https://api.github.com/repos/glpi-project/glpi/releases", $error);
        $all_gh_releases = json_decode($json_gh_releases, true);
        $released_tags = array();
        foreach ($all_gh_releases as $release) {
            if ($release['prerelease'] == false) {
                $released_tags[] = $release['tag_name'];
            }
        }
        usort($released_tags, 'version_compare');
        $latest_version = array_pop($released_tags);
        if (strlen(trim($latest_version)) == 0) {
            if (!$auto) {
                if ($messageafterredirect) {
                    Session::addMessageAfterRedirect($error, true, ERROR);
                } else {
                    echo "<div class='center'>{$error}</div>";
                }
            } else {
                return $error;
            }
        } else {
            if (version_compare($CFG_GLPI["version"], $latest_version, '<')) {
                $config_object = new Config();
                $input["id"] = 1;
                $input["founded_new_version"] = $latest_version;
                $config_object->update($input);
                if (!$auto) {
                    if ($messageafterredirect) {
                        Session::addMessageAfterRedirect(sprintf(__('A new version is available: %s.'), $latest_version));
                        Session::addMessageAfterRedirect(__('You will find it on the GLPI-PROJECT.org site.'));
                    } else {
                        echo "<div class='center'>" . sprintf(__('A new version is available: %s.'), $latest_version) . "</div>";
                        echo "<div class='center'>" . __('You will find it on the GLPI-PROJECT.org site.') . "</div>";
                    }
                } else {
                    if ($messageafterredirect) {
                        Session::addMessageAfterRedirect(sprintf(__('A new version is available: %s.'), $latest_version));
                    } else {
                        return sprintf(__('A new version is available: %s.'), $latest_version);
                    }
                }
            } else {
                if (!$auto) {
                    if ($messageafterredirect) {
                        Session::addMessageAfterRedirect(__('You have the latest available version'));
                    } else {
                        echo "<div class='center'>" . __('You have the latest available version') . "</div>";
                    }
                } else {
                    if ($messageafterredirect) {
                        Session::addMessageAfterRedirect(__('You have the latest available version'));
                    } else {
                        return __('You have the latest available version');
                    }
                }
            }
        }
        return 1;
    }

 /**
  * Cron job to check if a new version is available
  *
  * @param $task for log
  **/
 static function cronCheckUpdate($task)
 {
     $result = Toolbox::checkNewVersionAvailable(1);
     $task->log($result);
     return 1;
 }