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- <?php
- /**
- * Conditional upgrade for UTF8 as described in https://github.com/elgg/elgg/issues/1928
- */
- // get_version() returns the code version.
- // we want the DB version.
- $dbversion = (int) datalist_get('version');
- // 2009100701 was the utf8 upgrade for 1.7.
- // if we've already upgraded, don't try again.
- if ($dbversion < 2009100701) {
- // if the default client connection is utf8 there is no reason
- // to run this upgrade because the strings are already stored correctly.
- // start a new link to the DB to see what its defaults are.
- $link = mysql_connect($CONFIG->dbhost, $CONFIG->dbuser, $CONFIG->dbpass, TRUE);
- mysql_select_db($CONFIG->dbname, $link);
- $q = "SHOW VARIABLES LIKE 'character_set_client'";
- $r = mysql_query($q);
- $client = mysql_fetch_assoc($r);
- $q = "SHOW VARIABLES LIKE 'character_set_connection'";
- $r = mysql_query($q);
- $connection = mysql_fetch_assoc($r);
- // only run upgrade if not already talking utf8.
- if ($client['Value'] != 'utf8' && $connection['Value'] != 'utf8') {
- $qs = array();
- $qs[] = "SET NAMES utf8";
- $qs[] = "ALTER TABLE {$CONFIG->dbprefix}metastrings DISABLE KEYS";
- $qs[] = "REPLACE INTO {$CONFIG->dbprefix}metastrings (id, string)
- SELECT id, unhex(hex(convert(string using latin1)))
- FROM {$CONFIG->dbprefix}metastrings";
- $qs[] = "ALTER TABLE {$CONFIG->dbprefix}metastrings ENABLE KEYS";
- $qs[] = "ALTER TABLE {$CONFIG->dbprefix}groups_entity DISABLE KEYS";
- $qs[] = "REPLACE INTO {$CONFIG->dbprefix}groups_entity (guid, name, description)
- SELECT guid, unhex(hex(convert(name using latin1))),
- unhex(hex(convert(description using latin1)))
- FROM {$CONFIG->dbprefix}groups_entity";
- $qs[] = "ALTER TABLE {$CONFIG->dbprefix}groups_entity ENABLE KEYS";
- $qs[] = "ALTER TABLE {$CONFIG->dbprefix}objects_entity DISABLE KEYS";
- $qs[] = "REPLACE INTO {$CONFIG->dbprefix}objects_entity (guid, title, description)
- SELECT guid, unhex(hex(convert(title using latin1))),
- unhex(hex(convert(description using latin1)))
- FROM {$CONFIG->dbprefix}objects_entity";
- $qs[] = "ALTER TABLE {$CONFIG->dbprefix}objects_entity ENABLE KEYS";
- $qs[] = "ALTER TABLE {$CONFIG->dbprefix}users_entity DISABLE KEYS";
- $qs[] = "REPLACE INTO {$CONFIG->dbprefix}users_entity
- (guid, name, username, password, salt, email, language, code,
- banned, last_action, prev_last_action, last_login, prev_last_login)
- SELECT guid, unhex(hex(convert(name using latin1))),
- username, password, salt, email, language, code,
- banned, last_action, prev_last_action, last_login, prev_last_login
- FROM {$CONFIG->dbprefix}users_entity";
- $qs[] = "ALTER TABLE {$CONFIG->dbprefix}users_entity ENABLE KEYS";
- foreach ($qs as $q) {
- if (!update_data($q)) {
- throw new \Exception('Couldn\'t execute upgrade query: ' . $q);
- }
- }
- }
- }
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