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   1  <?php
   2  /**
   3  *
   4  * This file is part of the phpBB Forum Software package.
   5  *
   6  * @copyright (c) phpBB Limited <https://www.phpbb.com>
   7  * @license GNU General Public License, version 2 (GPL-2.0)
   8  *
   9  * For full copyright and license information, please see
  10  * the docs/CREDITS.txt file.
  11  *
  12  */
  13  
  14  namespace phpbb\db\migration\data\v310;
  15  
  16  class timezone_p2 extends \phpbb\db\migration\migration
  17  {
  18  	public function effectively_installed()
  19      {
  20          return !$this->db_tools->sql_column_exists($this->table_prefix . 'users', 'user_dst');
  21      }
  22  
  23  	static public function depends_on()
  24      {
  25          return array('\phpbb\db\migration\data\v310\timezone');
  26      }
  27  
  28  	public function update_schema()
  29      {
  30          return array(
  31              'drop_columns'    => array(
  32                  $this->table_prefix . 'users'            => array(
  33                      'user_dst',
  34                  ),
  35              ),
  36          );
  37      }
  38  
  39  	public function revert_schema()
  40      {
  41          return array(
  42              'add_columns'    => array(
  43                  $this->table_prefix . 'users'            => array(
  44                      'user_dst'        => array('BOOL', 0),
  45                  ),
  46              ),
  47          );
  48      }
  49  }