update_0901_0905.php

<?php
/**
 * ---------------------------------------------------------------------
 * GLPI - Gestionnaire Libre de Parc Informatique
 * Copyright (C) 2015-2018 Teclib' and contributors.
 *
 * http://glpi-project.org
 *
 * based on GLPI - Gestionnaire Libre de Parc Informatique
 * Copyright (C) 2003-2014 by the INDEPNET Development Team.
 *
 * ---------------------------------------------------------------------
 *
 * LICENSE
 *
 * This file is part of GLPI.
 *
 * GLPI 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.
 *
 * GLPI 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 GLPI. If not, see <http://www.gnu.org/licenses/>.
 * ---------------------------------------------------------------------
 */

/**
 * Update from 0.90.1 to 0.90.5
 *
 * @return bool for success (will die for most error)
**/
function update0901to0905() {
   global $DB, $migration;

   $updateresult     = true;
   $ADDTODISPLAYPREF = [];

   //TRANS: %s is the number of new version
   $migration->displayTitle(sprintf(__('Update to %s'), '0.90.5'));
   $migration->setVersion('0.90.5');

   $backup_tables = false;
   $newtables     = [];

   foreach ($newtables as $new_table) {
      // rename new tables if exists ?
      if ($DB->tableExists($new_table)) {
         $migration->dropTable("backup_$new_table");
         $migration->displayWarning("$new_table table already exists. ".
                                    "A backup have been done to backup_$new_table.");
         $backup_tables = true;
         $query         = $migration->renameTable("$new_table", "backup_$new_table");
      }
   }
   if ($backup_tables) {
      $migration->displayWarning("You can delete backup tables if you have no need of them.",
                                 true);
   }

   // fix https://github.com/glpi-project/glpi/issues/820
   // remove empty suppliers in tickets
   $query = "DELETE FROM glpi_suppliers_tickets
             WHERE suppliers_id = 0
               AND alternative_email = ''";
   $DB->query($query);

   // ************ Keep it at the end **************
   $migration->executeMigration();

   return $updateresult;
}