<?php
/**
*
* This file is part of the phpBB Forum Software package.
*
* @copyright (c) phpBB Limited <https://www.phpbb.com>
* @license GNU General Public License, version 2 (GPL-2.0)
*
* For full copyright and license information, please see
* the docs/CREDITS.txt file.
*
*/
namespace phpbb\db\migration\data\v31x;
class remove_duplicate_migrations extends \phpbb\db\migration\migration
{
static public function depends_on()
{
return array('\phpbb\db\migration\data\v31x\v3110');
}
public function update_data()
{
return array(
array('custom', array(array($this, 'deduplicate_entries'))),
);
}
public function deduplicate_entries()
{
$migration_state = array();
$duplicate_migrations = array();
$sql = "SELECT *
FROM " . $this->table_prefix . 'migrations';
$result = $this->db->sql_query($sql);
if (!$this->db->get_sql_error_triggered())
{
while ($migration = $this->db->sql_fetchrow($result))
{
$migration_state[$migration['migration_name']] = $migration;
$migration_state[$migration['migration_name']]['migration_depends_on'] = unserialize($migration['migration_depends_on']);
}
}
$this->db->sql_freeresult($result);
foreach ($migration_state as $name => $migration)
{
$prepended_name = ($name[0] == '\\' ? '' : '\\') . $name;
$prefixless_name = $name[0] == '\\' ? substr($name, 1) : $name;
if ($prepended_name != $name && isset($migration_state[$prepended_name]) && $migration_state[$prepended_name]['migration_depends_on'] == $migration_state[$name]['migration_depends_on'])
{
$duplicate_migrations[] = $name;
unset($migration_state[$prepended_name]);
}
else if ($prefixless_name != $name && isset($migration_state[$prefixless_name]) && $migration_state[$prefixless_name]['migration_depends_on'] == $migration_state[$name]['migration_depends_on'])
{
$duplicate_migrations[] = $prefixless_name;
unset($migration_state[$prefixless_name]);
}
}
if (count($duplicate_migrations))
{
$sql = 'DELETE
FROM ' . $this->table_prefix . 'migrations
WHERE ' . $this->db->sql_in_set('migration_name', $duplicate_migrations);
$this->db->sql_query($sql);
}
}
}