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authorNathan Guse <nathaniel.guse@gmail.com>2013-09-05 13:56:57 -0500
committerNathan Guse <nathaniel.guse@gmail.com>2013-09-05 13:56:57 -0500
commite8ab8fe0bc7d087fe3c9b5d2a3e545f228bb3096 (patch)
tree6a053afa0a156204112b480707608cac60770ac5 /phpBB/includes/functions_database_helper.php
parentabaa53b0b295358efcf591587485c01a027cd5cb (diff)
parentdd86e8d0ae0179cf50076cdb1a8020266b6432a5 (diff)
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Merge branch 'develop' of github.com:phpbb/phpbb3 into ticket/8323
# By Joas Schilling (613) and others # Via Andreas Fischer (214) and others * 'develop' of github.com:phpbb/phpbb3: (2494 commits) [ticket/11825] Move schema_data.php into includes/ instead of phpbb/ [ticket/11215] Remove unnecessary comment [ticket/11755] MySQL upgrader out of date [prep-release-3.0.12] Update Changelog for 3.0.12-RC3 release. [prep-release-3.0.12] Bumping version number for 3.0.12-RC3. [ticket/11823] Set up nginx server to match PHP files with characters after .php [ticket/11812] Fix empty define [ticket/11818] Update Symfony dependencies to 2.3.* [ticket/11791] Load adm/ events from styles/adm/event/ [ticket/11215] Fix helper_url_test.php tests [ticket/11215] Add newline back to .htaccess, fix wording [ticket/11215] Update comment in .htaccess [ticket/11215] Uncomment rewrite rules in .htaccess [ticket/11215] Make controller helper url() method use correct format [ticket/11215] Add commented-out URL rewrite capability to .htaccess [ticket/11821] Fix comma usage next to "You are receiving this notification". [ticket/11769] Allow using 0 as poster name [ticket/11769] Allow '0' as username [ticket/11215] Use new URL structure for controllers [ticket/11215] Everything appears to be working... ... Conflicts: phpBB/includes/functions_privmsgs.php
Diffstat (limited to 'phpBB/includes/functions_database_helper.php')
-rw-r--r--phpBB/includes/functions_database_helper.php206
1 files changed, 206 insertions, 0 deletions
diff --git a/phpBB/includes/functions_database_helper.php b/phpBB/includes/functions_database_helper.php
new file mode 100644
index 0000000000..1b508e6a02
--- /dev/null
+++ b/phpBB/includes/functions_database_helper.php
@@ -0,0 +1,206 @@
+<?php
+/**
+*
+* @package phpBB3
+* @copyright (c) 2012 phpBB Group
+* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License v2
+*
+*/
+
+/**
+* @ignore
+*/
+if (!defined('IN_PHPBB'))
+{
+ exit;
+}
+
+/**
+* Updates rows in given table from a set of values to a new value.
+* If this results in rows violating uniqueness constraints, the duplicate
+* rows are eliminated.
+*
+* The only supported table is bookmarks.
+*
+* @param phpbb_db_driver $db Database object
+* @param string $table Table on which to perform the update
+* @param string $column Column whose values to change
+* @param array $from_values An array of values that should be changed
+* @param int $to_value The new value
+* @return null
+*/
+function phpbb_update_rows_avoiding_duplicates(phpbb_db_driver $db, $table, $column, $from_values, $to_value)
+{
+ $sql = "SELECT $column, user_id
+ FROM $table
+ WHERE " . $db->sql_in_set($column, $from_values);
+ $result = $db->sql_query($sql);
+
+ $old_user_ids = array();
+ while ($row = $db->sql_fetchrow($result))
+ {
+ $old_user_ids[$row[$column]][] = (int) $row['user_id'];
+ }
+ $db->sql_freeresult($result);
+
+ $sql = "SELECT $column, user_id
+ FROM $table
+ WHERE $column = " . (int) $to_value;
+ $result = $db->sql_query($sql);
+
+ $new_user_ids = array();
+ while ($row = $db->sql_fetchrow($result))
+ {
+ $new_user_ids[$row[$column]][] = (int) $row['user_id'];
+ }
+ $db->sql_freeresult($result);
+
+ $queries = array();
+ foreach ($from_values as $from_value)
+ {
+ if (!isset($old_user_ids[$from_value]))
+ {
+ continue;
+ }
+ if (empty($new_user_ids))
+ {
+ $sql = "UPDATE $table
+ SET $column = " . (int) $to_value . "
+ WHERE $column = '" . $db->sql_escape($from_value) . "'";
+ $queries[] = $sql;
+ }
+ else
+ {
+ $different_user_ids = array_diff($old_user_ids[$from_value], $new_user_ids[$to_value]);
+ if (!empty($different_user_ids))
+ {
+ $sql = "UPDATE $table
+ SET $column = " . (int) $to_value . "
+ WHERE $column = '" . $db->sql_escape($from_value) . "'
+ AND " . $db->sql_in_set('user_id', $different_user_ids);
+ $queries[] = $sql;
+ }
+ }
+ }
+
+ if (!empty($queries))
+ {
+ $db->sql_transaction('begin');
+
+ foreach ($queries as $sql)
+ {
+ $db->sql_query($sql);
+ }
+
+ $sql = "DELETE FROM $table
+ WHERE " . $db->sql_in_set($column, $from_values);
+ $db->sql_query($sql);
+
+ $db->sql_transaction('commit');
+ }
+}
+
+/**
+* Updates rows in given table from a set of values to a new value.
+* If this results in rows violating uniqueness constraints, the duplicate
+* rows are merged respecting notify_status (0 takes precedence over 1).
+*
+* The only supported table is topics_watch.
+*
+* @param phpbb_db_driver $db Database object
+* @param string $table Table on which to perform the update
+* @param string $column Column whose values to change
+* @param array $from_values An array of values that should be changed
+* @param int $to_value The new value
+* @return null
+*/
+function phpbb_update_rows_avoiding_duplicates_notify_status(phpbb_db_driver $db, $table, $column, $from_values, $to_value)
+{
+ $sql = "SELECT $column, user_id, notify_status
+ FROM $table
+ WHERE " . $db->sql_in_set($column, $from_values);
+ $result = $db->sql_query($sql);
+
+ $old_user_ids = array();
+ while ($row = $db->sql_fetchrow($result))
+ {
+ $old_user_ids[(int) $row['notify_status']][$row[$column]][] = (int) $row['user_id'];
+ }
+ $db->sql_freeresult($result);
+
+ $sql = "SELECT $column, user_id
+ FROM $table
+ WHERE $column = " . (int) $to_value;
+ $result = $db->sql_query($sql);
+
+ $new_user_ids = array();
+ while ($row = $db->sql_fetchrow($result))
+ {
+ $new_user_ids[$row[$column]][] = (int) $row['user_id'];
+ }
+ $db->sql_freeresult($result);
+
+ $queries = array();
+ $extra_updates = array(
+ 0 => 'notify_status = 0',
+ 1 => '',
+ );
+ foreach ($from_values as $from_value)
+ {
+ foreach ($extra_updates as $notify_status => $extra_update)
+ {
+ if (!isset($old_user_ids[$notify_status][$from_value]))
+ {
+ continue;
+ }
+ if (empty($new_user_ids))
+ {
+ $sql = "UPDATE $table
+ SET $column = " . (int) $to_value . "
+ WHERE $column = '" . $db->sql_escape($from_value) . "'";
+ $queries[] = $sql;
+ }
+ else
+ {
+ $different_user_ids = array_diff($old_user_ids[$notify_status][$from_value], $new_user_ids[$to_value]);
+ if (!empty($different_user_ids))
+ {
+ $sql = "UPDATE $table
+ SET $column = " . (int) $to_value . "
+ WHERE $column = '" . $db->sql_escape($from_value) . "'
+ AND " . $db->sql_in_set('user_id', $different_user_ids);
+ $queries[] = $sql;
+ }
+
+ if ($extra_update)
+ {
+ $same_user_ids = array_diff($old_user_ids[$notify_status][$from_value], $different_user_ids);
+ if (!empty($same_user_ids))
+ {
+ $sql = "UPDATE $table
+ SET $extra_update
+ WHERE $column = '" . (int) $to_value . "'
+ AND " . $db->sql_in_set('user_id', $same_user_ids);
+ $queries[] = $sql;
+ }
+ }
+ }
+ }
+ }
+
+ if (!empty($queries))
+ {
+ $db->sql_transaction('begin');
+
+ foreach ($queries as $sql)
+ {
+ $db->sql_query($sql);
+ }
+
+ $sql = "DELETE FROM $table
+ WHERE " . $db->sql_in_set($column, $from_values);
+ $db->sql_query($sql);
+
+ $db->sql_transaction('commit');
+ }
+}
generated by cgit v1.2.1 (git 2.21.0) at 2025-07-18 07:01:47 +0000