_extension = $ext;
$this->_table_cache = array();
$this->_current_user = array();
}
/**
* Checks whether database extension is loaded
*
* @param string $extension mysql extension to check
*
* @return bool
*/
public static function checkDbExtension($extension = 'mysql')
{
if (function_exists($extension . '_connect')) {
return true;
}
return false;
}
/**
* runs a query
*
* @param string $query SQL query to execute
* @param mixed $link optional database link to use
* @param int $options optional query options
* @param bool $cache_affected_rows whether to cache affected rows
*
* @return mixed
*/
public function query($query, $link = null, $options = 0,
$cache_affected_rows = true
) {
$res = $this->tryQuery($query, $link, $options, $cache_affected_rows)
or Util::mysqlDie($this->getError($link), $query);
return $res;
}
/**
* Get a cached value from table cache.
*
* @param array $contentPath Array of the name of the target value
* @param mixed $default Return value on cache miss
*
* @return mixed cached value or default
*/
public function getCachedTableContent($contentPath, $default = null)
{
return \PMA\Util\get($this->_table_cache, $contentPath, $default);
}
/**
* Set an item in table cache using dot notation.
*
* @param array $contentPath Array with the target path
* @param mixed $value Target value
*
* @return void
*/
public function cacheTableContent($contentPath, $value)
{
$loc = &$this->_table_cache;
if (!isset($contentPath)) {
$loc = $value;
return;
}
while (count($contentPath) > 1) {
$key = array_shift($contentPath);
// If the key doesn't exist at this depth, we will just create an empty
// array to hold the next value, allowing us to create the arrays to hold
// final values at the correct depth. Then we'll keep digging into the
// array.
if (!isset($loc[$key]) || !is_array($loc[$key])) {
$loc[$key] = array();
}
$loc = &$loc[$key];
}
$loc[array_shift($contentPath)] = $value;
}
/**
* Clear the table cache.
*
* @return void
*/
public function clearTableCache()
{
$this->_table_cache = array();
}
/**
* Caches table data so Table does not require to issue
* SHOW TABLE STATUS again
*
* @param array $tables information for tables of some databases
* @param string $table table name
*
* @return void
*/
private function _cacheTableData($tables, $table)
{
// Note: I don't see why we would need array_merge_recursive() here,
// as it creates double entries for the same table (for example a double
// entry for Comment when changing the storage engine in Operations)
// Note 2: Instead of array_merge(), simply use the + operator because
// array_merge() renumbers numeric keys starting with 0, therefore
// we would lose a db name that consists only of numbers
foreach ($tables as $one_database => $its_tables) {
if (isset($this->_table_cache[$one_database])) {
// the + operator does not do the intended effect
// when the cache for one table already exists
if ($table
&& isset($this->_table_cache[$one_database][$table])
) {
unset($this->_table_cache[$one_database][$table]);
}
$this->_table_cache[$one_database]
= $this->_table_cache[$one_database] + $tables[$one_database];
} else {
$this->_table_cache[$one_database] = $tables[$one_database];
}
}
}
/**
* Stores query data into session data for debugging purposes
*
* @param string $query Query text
* @param object $link database link
* @param object|boolean $result Query result
* @param integer $time Time to execute query
*
* @return void
*/
private function _dbgQuery($query, $link, $result, $time)
{
$dbgInfo = array();
$error_message = $this->getError($link);
if ($result == false && is_string($error_message)) {
$dbgInfo['error']
= ''
. htmlspecialchars($error_message) . '';
}
$dbgInfo['query'] = htmlspecialchars($query);
$dbgInfo['time'] = $time;
// Get and slightly format backtrace, this is used
// in the javascript console.
// Strip call to _dbgQuery
$dbgInfo['trace'] = Error::processBacktrace(
array_slice(debug_backtrace(), 1)
);
$dbgInfo['hash'] = md5($query);
$_SESSION['debug']['queries'][] = $dbgInfo;
}
/**
* runs a query and returns the result
*
* @param string $query query to run
* @param object $link mysql link resource
* @param integer $options query options
* @param bool $cache_affected_rows whether to cache affected row
*
* @return mixed
*/
public function tryQuery($query, $link = null, $options = 0,
$cache_affected_rows = true
) {
$debug = $GLOBALS['cfg']['DBG']['sql'];
$link = $this->getLink($link);
if ($link === false) {
return false;
}
if ($debug) {
$time = microtime(true);
}
$result = $this->_extension->realQuery($query, $link, $options);
if ($cache_affected_rows) {
$GLOBALS['cached_affected_rows'] = $this->affectedRows($link, false);
}
if ($debug) {
$time = microtime(true) - $time;
$this->_dbgQuery($query, $link, $result, $time);
if ($GLOBALS['cfg']['DBG']['sqllog']) {
openlog('phpMyAdmin', LOG_NDELAY | LOG_PID, LOG_USER);
syslog(
LOG_INFO,
'SQL[' . basename($_SERVER['SCRIPT_NAME']) . ']: '
. sprintf('%0.3f', $time) . ' > ' . $query
);
closelog();
}
}
if ($result !== false && Tracker::isActive()) {
Tracker::handleQuery($query);
}
return $result;
}
/**
* Run multi query statement and return results
*
* @param string $multi_query multi query statement to execute
* @param mysqli $link mysqli object
*
* @return mysqli_result collection | boolean(false)
*/
public function tryMultiQuery($multi_query = '', $link = null)
{
$link = $this->getLink($link);
if ($link === false) {
return false;
}
return $this->_extension->realMultiQuery($link, $multi_query);
}
/**
* returns array with table names for given db
*
* @param string $database name of database
* @param mixed $link mysql link resource|object
*
* @return array tables names
*/
public function getTables($database, $link = null)
{
$tables = $this->fetchResult(
'SHOW TABLES FROM ' . Util::backquote($database) . ';',
null,
0,
$link,
self::QUERY_STORE
);
if ($GLOBALS['cfg']['NaturalOrder']) {
uksort($tables, 'strnatcasecmp');
}
return $tables;
}
/**
* returns a segment of the SQL WHERE clause regarding table name and type
*
* @param array|string $table table(s)
* @param boolean $tbl_is_group $table is a table group
* @param string $table_type whether table or view
*
* @return string a segment of the WHERE clause
*/
private function _getTableCondition($table, $tbl_is_group, $table_type)
{
// get table information from information_schema
if ($table) {
if (is_array($table)) {
$sql_where_table = 'AND t.`TABLE_NAME` '
. Util::getCollateForIS() . ' IN (\''
. implode(
'\', \'',
array_map(
array($this, 'escapeString'),
$table
)
)
. '\')';
} elseif (true === $tbl_is_group) {
$sql_where_table = 'AND t.`TABLE_NAME` LIKE \''
. Util::escapeMysqlWildcards(
$GLOBALS['dbi']->escapeString($table)
)
. '%\'';
} else {
$sql_where_table = 'AND t.`TABLE_NAME` '
. Util::getCollateForIS() . ' = \''
. $GLOBALS['dbi']->escapeString($table) . '\'';
}
} else {
$sql_where_table = '';
}
if ($table_type) {
if ($table_type == 'view') {
$sql_where_table .= " AND t.`TABLE_TYPE` != 'BASE TABLE'";
} else if ($table_type == 'table') {
$sql_where_table .= " AND t.`TABLE_TYPE` = 'BASE TABLE'";
}
}
return $sql_where_table;
}
/**
* returns the beginning of the SQL statement to fetch the list of tables
*
* @param string[] $this_databases databases to list
* @param string $sql_where_table additional condition
*
* @return string the SQL statement
*/
private function _getSqlForTablesFull($this_databases, $sql_where_table)
{
$sql = '
SELECT *,
`TABLE_SCHEMA` AS `Db`,
`TABLE_NAME` AS `Name`,
`TABLE_TYPE` AS `TABLE_TYPE`,
`ENGINE` AS `Engine`,
`ENGINE` AS `Type`,
`VERSION` AS `Version`,
`ROW_FORMAT` AS `Row_format`,
`TABLE_ROWS` AS `Rows`,
`AVG_ROW_LENGTH` AS `Avg_row_length`,
`DATA_LENGTH` AS `Data_length`,
`MAX_DATA_LENGTH` AS `Max_data_length`,
`INDEX_LENGTH` AS `Index_length`,
`DATA_FREE` AS `Data_free`,
`AUTO_INCREMENT` AS `Auto_increment`,
`CREATE_TIME` AS `Create_time`,
`UPDATE_TIME` AS `Update_time`,
`CHECK_TIME` AS `Check_time`,
`TABLE_COLLATION` AS `Collation`,
`CHECKSUM` AS `Checksum`,
`CREATE_OPTIONS` AS `Create_options`,
`TABLE_COMMENT` AS `Comment`
FROM `information_schema`.`TABLES` t
WHERE `TABLE_SCHEMA` ' . Util::getCollateForIS() . '
IN (\'' . implode("', '", $this_databases) . '\')
' . $sql_where_table;
return $sql;
}
/**
* returns array of all tables in given db or dbs
* this function expects unquoted names:
* RIGHT: my_database
* WRONG: `my_database`
* WRONG: my\_database
* if $tbl_is_group is true, $table is used as filter for table names
*
*
* $GLOBALS['dbi']->getTablesFull('my_database');
* $GLOBALS['dbi']->getTablesFull('my_database', 'my_table'));
* $GLOBALS['dbi']->getTablesFull('my_database', 'my_tables_', true));
*
*
* @param string $database database
* @param string|array $table table name(s)
* @param boolean $tbl_is_group $table is a table group
* @param mixed $link mysql link
* @param integer $limit_offset zero-based offset for the count
* @param boolean|integer $limit_count number of tables to return
* @param string $sort_by table attribute to sort by
* @param string $sort_order direction to sort (ASC or DESC)
* @param string $table_type whether table or view
*
* @todo move into Table
*
* @return array list of tables in given db(s)
*/
public function getTablesFull($database, $table = '',
$tbl_is_group = false, $link = null, $limit_offset = 0,
$limit_count = false, $sort_by = 'Name', $sort_order = 'ASC',
$table_type = null
) {
if (true === $limit_count) {
$limit_count = $GLOBALS['cfg']['MaxTableList'];
}
// prepare and check parameters
if (! is_array($database)) {
$databases = array($database);
} else {
$databases = $database;
}
$tables = array();
if (! $GLOBALS['cfg']['Server']['DisableIS']) {
$sql_where_table = $this->_getTableCondition(
$table, $tbl_is_group, $table_type
);
// for PMA bc:
// `SCHEMA_FIELD_NAME` AS `SHOW_TABLE_STATUS_FIELD_NAME`
//
// on non-Windows servers,
// added BINARY in the WHERE clause to force a case sensitive
// comparison (if we are looking for the db Aa we don't want
// to find the db aa)
$this_databases = array_map(
array($this, 'escapeString'),
$databases
);
$sql = $this->_getSqlForTablesFull($this_databases, $sql_where_table);
// Sort the tables
$sql .= " ORDER BY $sort_by $sort_order";
if ($limit_count) {
$sql .= ' LIMIT ' . $limit_count . ' OFFSET ' . $limit_offset;
}
$tables = $this->fetchResult(
$sql, array('TABLE_SCHEMA', 'TABLE_NAME'), null, $link
);
if ($sort_by == 'Name' && $GLOBALS['cfg']['NaturalOrder']) {
// here, the array's first key is by schema name
foreach ($tables as $one_database_name => $one_database_tables) {
uksort($one_database_tables, 'strnatcasecmp');
if ($sort_order == 'DESC') {
$one_database_tables = array_reverse($one_database_tables);
}
$tables[$one_database_name] = $one_database_tables;
}
} elseif ($sort_by == 'Data_length') {
// Size = Data_length + Index_length
foreach ($tables as $one_database_name => $one_database_tables) {
uasort(
$one_database_tables,
function ($a, $b) {
$aLength = $a['Data_length'] + $a['Index_length'];
$bLength = $b['Data_length'] + $b['Index_length'];
return ($aLength == $bLength)
? 0
: ($aLength < $bLength) ? -1 : 1;
}
);
if ($sort_order == 'DESC') {
$one_database_tables = array_reverse($one_database_tables);
}
$tables[$one_database_name] = $one_database_tables;
}
}
} // end (get information from table schema)
// If permissions are wrong on even one database directory,
// information_schema does not return any table info for any database
// this is why we fall back to SHOW TABLE STATUS even for MySQL >= 50002
if (empty($tables)) {
foreach ($databases as $each_database) {
if ($table || (true === $tbl_is_group) || ! empty($table_type)) {
$sql = 'SHOW TABLE STATUS FROM '
. Util::backquote($each_database)
. ' WHERE';
$needAnd = false;
if ($table || (true === $tbl_is_group)) {
if (is_array($table)) {
$sql .= ' `Name` IN (\''
. implode(
'\', \'',
array_map(
array($this, 'escapeString'),
$table,
$link
)
) . '\')';
} else {
$sql .= " `Name` LIKE '"
. Util::escapeMysqlWildcards(
$this->escapeString($table, $link)
)
. "%'";
}
$needAnd = true;
}
if (! empty($table_type)) {
if ($needAnd) {
$sql .= " AND";
}
if ($table_type == 'view') {
$sql .= " `Comment` = 'VIEW'";
} else if ($table_type == 'table') {
$sql .= " `Comment` != 'VIEW'";
}
}
} else {
$sql = 'SHOW TABLE STATUS FROM '
. Util::backquote($each_database);
}
$each_tables = $this->fetchResult($sql, 'Name', null, $link);
// Sort naturally if the config allows it and we're sorting
// the Name column.
if ($sort_by == 'Name' && $GLOBALS['cfg']['NaturalOrder']) {
uksort($each_tables, 'strnatcasecmp');
if ($sort_order == 'DESC') {
$each_tables = array_reverse($each_tables);
}
} else {
// Prepare to sort by creating array of the selected sort
// value to pass to array_multisort
// Size = Data_length + Index_length
if ($sort_by == 'Data_length') {
foreach ($each_tables as $table_name => $table_data) {
${$sort_by}[$table_name] = strtolower(
$table_data['Data_length']
+ $table_data['Index_length']
);
}
} else {
foreach ($each_tables as $table_name => $table_data) {
${$sort_by}[$table_name]
= strtolower($table_data[$sort_by]);
}
}
if (! empty($$sort_by)) {
if ($sort_order == 'DESC') {
array_multisort($$sort_by, SORT_DESC, $each_tables);
} else {
array_multisort($$sort_by, SORT_ASC, $each_tables);
}
}
// cleanup the temporary sort array
unset($$sort_by);
}
if ($limit_count) {
$each_tables = array_slice(
$each_tables, $limit_offset, $limit_count
);
}
foreach ($each_tables as $table_name => $each_table) {
if (! isset($each_tables[$table_name]['Type'])
&& isset($each_tables[$table_name]['Engine'])
) {
// pma BC, same parts of PMA still uses 'Type'
$each_tables[$table_name]['Type']
=& $each_tables[$table_name]['Engine'];
} elseif (! isset($each_tables[$table_name]['Engine'])
&& isset($each_tables[$table_name]['Type'])
) {
// old MySQL reports Type, newer MySQL reports Engine
$each_tables[$table_name]['Engine']
=& $each_tables[$table_name]['Type'];
}
// Compatibility with INFORMATION_SCHEMA output
$each_tables[$table_name]['TABLE_SCHEMA']
= $each_database;
$each_tables[$table_name]['TABLE_NAME']
=& $each_tables[$table_name]['Name'];
$each_tables[$table_name]['ENGINE']
=& $each_tables[$table_name]['Engine'];
$each_tables[$table_name]['VERSION']
=& $each_tables[$table_name]['Version'];
$each_tables[$table_name]['ROW_FORMAT']
=& $each_tables[$table_name]['Row_format'];
$each_tables[$table_name]['TABLE_ROWS']
=& $each_tables[$table_name]['Rows'];
$each_tables[$table_name]['AVG_ROW_LENGTH']
=& $each_tables[$table_name]['Avg_row_length'];
$each_tables[$table_name]['DATA_LENGTH']
=& $each_tables[$table_name]['Data_length'];
$each_tables[$table_name]['MAX_DATA_LENGTH']
=& $each_tables[$table_name]['Max_data_length'];
$each_tables[$table_name]['INDEX_LENGTH']
=& $each_tables[$table_name]['Index_length'];
$each_tables[$table_name]['DATA_FREE']
=& $each_tables[$table_name]['Data_free'];
$each_tables[$table_name]['AUTO_INCREMENT']
=& $each_tables[$table_name]['Auto_increment'];
$each_tables[$table_name]['CREATE_TIME']
=& $each_tables[$table_name]['Create_time'];
$each_tables[$table_name]['UPDATE_TIME']
=& $each_tables[$table_name]['Update_time'];
$each_tables[$table_name]['CHECK_TIME']
=& $each_tables[$table_name]['Check_time'];
$each_tables[$table_name]['TABLE_COLLATION']
=& $each_tables[$table_name]['Collation'];
$each_tables[$table_name]['CHECKSUM']
=& $each_tables[$table_name]['Checksum'];
$each_tables[$table_name]['CREATE_OPTIONS']
=& $each_tables[$table_name]['Create_options'];
$each_tables[$table_name]['TABLE_COMMENT']
=& $each_tables[$table_name]['Comment'];
if (strtoupper($each_tables[$table_name]['Comment']) === 'VIEW'
&& $each_tables[$table_name]['Engine'] == null
) {
$each_tables[$table_name]['TABLE_TYPE'] = 'VIEW';
} elseif ($each_database == 'information_schema') {
$each_tables[$table_name]['TABLE_TYPE'] = 'SYSTEM VIEW';
} else {
/**
* @todo difference between 'TEMPORARY' and 'BASE TABLE'
* but how to detect?
*/
$each_tables[$table_name]['TABLE_TYPE'] = 'BASE TABLE';
}
}
$tables[$each_database] = $each_tables;
}
}
// cache table data
// so Table does not require to issue SHOW TABLE STATUS again
$this->_cacheTableData($tables, $table);
if (is_array($database)) {
return $tables;
}
if (isset($tables[$database])) {
return $tables[$database];
}
if (isset($tables[mb_strtolower($database)])) {
// on windows with lower_case_table_names = 1
// MySQL returns
// with SHOW DATABASES or information_schema.SCHEMATA: `Test`
// but information_schema.TABLES gives `test`
// bug #2036
// https://sourceforge.net/p/phpmyadmin/bugs/2036/
return $tables[mb_strtolower($database)];
}
return $tables;
}
/**
* Get VIEWs in a particular database
*
* @param string $db Database name to look in
*
* @return array $views Set of VIEWs inside the database
*/
public function getVirtualTables($db)
{
$tables_full = $this->getTablesFull($db);
$views = array();
foreach ($tables_full as $table=>$tmp) {
$_table = $this->getTable($db, $table);
if ($_table->isView()) {
$views[] = $table;
}
}
return $views;
}
/**
* returns array with databases containing extended infos about them
*
* @param string $database database
* @param boolean $force_stats retrieve stats also for MySQL < 5
* @param object $link mysql link
* @param string $sort_by column to order by
* @param string $sort_order ASC or DESC
* @param integer $limit_offset starting offset for LIMIT
* @param bool|int $limit_count row count for LIMIT or true
* for $GLOBALS['cfg']['MaxDbList']
*
* @todo move into ListDatabase?
*
* @return array $databases
*/
public function getDatabasesFull($database = null, $force_stats = false,
$link = null, $sort_by = 'SCHEMA_NAME', $sort_order = 'ASC',
$limit_offset = 0, $limit_count = false
) {
$sort_order = strtoupper($sort_order);
if (true === $limit_count) {
$limit_count = $GLOBALS['cfg']['MaxDbList'];
}
$apply_limit_and_order_manual = true;
if (! $GLOBALS['cfg']['Server']['DisableIS']) {
/**
* if $GLOBALS['cfg']['NaturalOrder'] is enabled, we cannot use LIMIT
* cause MySQL does not support natural ordering,
* we have to do it afterward
*/
$limit = '';
if (! $GLOBALS['cfg']['NaturalOrder']) {
if ($limit_count) {
$limit = ' LIMIT ' . $limit_count . ' OFFSET ' . $limit_offset;
}
$apply_limit_and_order_manual = false;
}
// get table information from information_schema
if (! empty($database)) {
$sql_where_schema = 'WHERE `SCHEMA_NAME` LIKE \''
. $this->escapeString($database, $link) . '\'';
} else {
$sql_where_schema = '';
}
$sql = 'SELECT *,
CAST(BIN_NAME AS CHAR CHARACTER SET utf8) AS SCHEMA_NAME
FROM (';
$sql .= 'SELECT
BINARY s.SCHEMA_NAME AS BIN_NAME,
s.DEFAULT_COLLATION_NAME';
if ($force_stats) {
$sql .= ',
COUNT(t.TABLE_SCHEMA) AS SCHEMA_TABLES,
SUM(t.TABLE_ROWS) AS SCHEMA_TABLE_ROWS,
SUM(t.DATA_LENGTH) AS SCHEMA_DATA_LENGTH,
SUM(t.MAX_DATA_LENGTH) AS SCHEMA_MAX_DATA_LENGTH,
SUM(t.INDEX_LENGTH) AS SCHEMA_INDEX_LENGTH,
SUM(t.DATA_LENGTH + t.INDEX_LENGTH)
AS SCHEMA_LENGTH,
SUM(IF(t.ENGINE <> \'InnoDB\', t.DATA_FREE, 0))
AS SCHEMA_DATA_FREE';
}
$sql .= '
FROM `information_schema`.SCHEMATA s';
if ($force_stats) {
$sql .= '
LEFT JOIN `information_schema`.TABLES t
ON BINARY t.TABLE_SCHEMA = BINARY s.SCHEMA_NAME';
}
$sql .= $sql_where_schema . '
GROUP BY BINARY s.SCHEMA_NAME, s.DEFAULT_COLLATION_NAME
ORDER BY ';
if ($sort_by == 'SCHEMA_NAME'
|| $sort_by == 'DEFAULT_COLLATION_NAME'
) {
$sql .= 'BINARY ';
}
$sql .= Util::backquote($sort_by)
. ' ' . $sort_order
. $limit;
$sql .= ') a';
$databases = $this->fetchResult($sql, 'SCHEMA_NAME', null, $link);
$mysql_error = $this->getError($link);
if (! count($databases) && $GLOBALS['errno']) {
Util::mysqlDie($mysql_error, $sql);
}
// display only databases also in official database list
// f.e. to apply hide_db and only_db
$drops = array_diff(
array_keys($databases), (array) $GLOBALS['dblist']->databases
);
foreach ($drops as $drop) {
unset($databases[$drop]);
}
} else {
$databases = array();
foreach ($GLOBALS['dblist']->databases as $database_name) {
// Compatibility with INFORMATION_SCHEMA output
$databases[$database_name]['SCHEMA_NAME'] = $database_name;
$databases[$database_name]['DEFAULT_COLLATION_NAME']
= $this->getDbCollation($database_name);
if (!$force_stats) {
continue;
}
// get additional info about tables
$databases[$database_name]['SCHEMA_TABLES'] = 0;
$databases[$database_name]['SCHEMA_TABLE_ROWS'] = 0;
$databases[$database_name]['SCHEMA_DATA_LENGTH'] = 0;
$databases[$database_name]['SCHEMA_MAX_DATA_LENGTH'] = 0;
$databases[$database_name]['SCHEMA_INDEX_LENGTH'] = 0;
$databases[$database_name]['SCHEMA_LENGTH'] = 0;
$databases[$database_name]['SCHEMA_DATA_FREE'] = 0;
$res = $this->query(
'SHOW TABLE STATUS FROM '
. Util::backquote($database_name) . ';'
);
if ($res === false) {
unset($res);
continue;
}
while ($row = $this->fetchAssoc($res)) {
$databases[$database_name]['SCHEMA_TABLES']++;
$databases[$database_name]['SCHEMA_TABLE_ROWS']
+= $row['Rows'];
$databases[$database_name]['SCHEMA_DATA_LENGTH']
+= $row['Data_length'];
$databases[$database_name]['SCHEMA_MAX_DATA_LENGTH']
+= $row['Max_data_length'];
$databases[$database_name]['SCHEMA_INDEX_LENGTH']
+= $row['Index_length'];
// for InnoDB, this does not contain the number of
// overhead bytes but the total free space
if ('InnoDB' != $row['Engine']) {
$databases[$database_name]['SCHEMA_DATA_FREE']
+= $row['Data_free'];
}
$databases[$database_name]['SCHEMA_LENGTH']
+= $row['Data_length'] + $row['Index_length'];
}
$this->freeResult($res);
unset($res);
}
}
/**
* apply limit and order manually now
* (caused by older MySQL < 5 or $GLOBALS['cfg']['NaturalOrder'])
*/
if ($apply_limit_and_order_manual) {
$GLOBALS['callback_sort_order'] = $sort_order;
$GLOBALS['callback_sort_by'] = $sort_by;
usort(
$databases,
array('PMA\libraries\DatabaseInterface', '_usortComparisonCallback')
);
unset($GLOBALS['callback_sort_order'], $GLOBALS['callback_sort_by']);
/**
* now apply limit
*/
if ($limit_count) {
$databases = array_slice($databases, $limit_offset, $limit_count);
}
}
return $databases;
}
/**
* usort comparison callback
*
* @param string $a first argument to sort
* @param string $b second argument to sort
*
* @return integer a value representing whether $a should be before $b in the
* sorted array or not
*
* @access private
*/
private static function _usortComparisonCallback($a, $b)
{
if ($GLOBALS['cfg']['NaturalOrder']) {
$sorter = 'strnatcasecmp';
} else {
$sorter = 'strcasecmp';
}
/* No sorting when key is not present */
if (! isset($a[$GLOBALS['callback_sort_by']])
|| ! isset($b[$GLOBALS['callback_sort_by']])
) {
return 0;
}
// produces f.e.:
// return -1 * strnatcasecmp($a["SCHEMA_TABLES"], $b["SCHEMA_TABLES"])
return ($GLOBALS['callback_sort_order'] == 'ASC' ? 1 : -1) * $sorter(
$a[$GLOBALS['callback_sort_by']], $b[$GLOBALS['callback_sort_by']]
);
} // end of the '_usortComparisonCallback()' method
/**
* returns detailed array with all columns for sql
*
* @param string $sql_query target SQL query to get columns
* @param array $view_columns alias for columns
*
* @return array
*/
public function getColumnMapFromSql($sql_query, $view_columns = array())
{
$result = $this->tryQuery($sql_query);
if ($result === false) {
return array();
}
$meta = $this->getFieldsMeta(
$result
);
$nbFields = count($meta);
if ($nbFields <= 0) {
return array();
}
$column_map = array();
$nbColumns = count($view_columns);
for ($i=0; $i < $nbFields; $i++) {
$map = array();
$map['table_name'] = $meta[$i]->table;
$map['refering_column'] = $meta[$i]->name;
if ($nbColumns > 1) {
$map['real_column'] = $view_columns[$i];
}
$column_map[] = $map;
}
return $column_map;
}
/**
* returns detailed array with all columns for given table in database,
* or all tables/databases
*
* @param string $database name of database
* @param string $table name of table to retrieve columns from
* @param string $column name of specific column
* @param mixed $link mysql link resource
*
* @return array
*/
public function getColumnsFull($database = null, $table = null,
$column = null, $link = null
) {
if (! $GLOBALS['cfg']['Server']['DisableIS']) {
$sql_wheres = array();
$array_keys = array();
// get columns information from information_schema
if (null !== $database) {
$sql_wheres[] = '`TABLE_SCHEMA` = \''
. $this->escapeString($database, $link) . '\' ';
} else {
$array_keys[] = 'TABLE_SCHEMA';
}
if (null !== $table) {
$sql_wheres[] = '`TABLE_NAME` = \''
. $this->escapeString($table, $link) . '\' ';
} else {
$array_keys[] = 'TABLE_NAME';
}
if (null !== $column) {
$sql_wheres[] = '`COLUMN_NAME` = \''
. $this->escapeString($column, $link) . '\' ';
} else {
$array_keys[] = 'COLUMN_NAME';
}
// for PMA bc:
// `[SCHEMA_FIELD_NAME]` AS `[SHOW_FULL_COLUMNS_FIELD_NAME]`
$sql = '
SELECT *,
`COLUMN_NAME` AS `Field`,
`COLUMN_TYPE` AS `Type`,
`COLLATION_NAME` AS `Collation`,
`IS_NULLABLE` AS `Null`,
`COLUMN_KEY` AS `Key`,
`COLUMN_DEFAULT` AS `Default`,
`EXTRA` AS `Extra`,
`PRIVILEGES` AS `Privileges`,
`COLUMN_COMMENT` AS `Comment`
FROM `information_schema`.`COLUMNS`';
if (count($sql_wheres)) {
$sql .= "\n" . ' WHERE ' . implode(' AND ', $sql_wheres);
}
return $this->fetchResult($sql, $array_keys, null, $link);
} else {
$columns = array();
if (null === $database) {
foreach ($GLOBALS['dblist']->databases as $database) {
$columns[$database] = $this->getColumnsFull(
$database, null, null, $link
);
}
return $columns;
} elseif (null === $table) {
$tables = $this->getTables($database);
foreach ($tables as $table) {
$columns[$table] = $this->getColumnsFull(
$database, $table, null, $link
);
}
return $columns;
}
$sql = 'SHOW FULL COLUMNS FROM '
. Util::backquote($database) . '.' . Util::backquote($table);
if (null !== $column) {
$sql .= " LIKE '" . $this->escapeString($column, $link) . "'";
}
$columns = $this->fetchResult($sql, 'Field', null, $link);
$ordinal_position = 1;
foreach ($columns as $column_name => $each_column) {
// Compatibility with INFORMATION_SCHEMA output
$columns[$column_name]['COLUMN_NAME']
=& $columns[$column_name]['Field'];
$columns[$column_name]['COLUMN_TYPE']
=& $columns[$column_name]['Type'];
$columns[$column_name]['COLLATION_NAME']
=& $columns[$column_name]['Collation'];
$columns[$column_name]['IS_NULLABLE']
=& $columns[$column_name]['Null'];
$columns[$column_name]['COLUMN_KEY']
=& $columns[$column_name]['Key'];
$columns[$column_name]['COLUMN_DEFAULT']
=& $columns[$column_name]['Default'];
$columns[$column_name]['EXTRA']
=& $columns[$column_name]['Extra'];
$columns[$column_name]['PRIVILEGES']
=& $columns[$column_name]['Privileges'];
$columns[$column_name]['COLUMN_COMMENT']
=& $columns[$column_name]['Comment'];
$columns[$column_name]['TABLE_CATALOG'] = null;
$columns[$column_name]['TABLE_SCHEMA'] = $database;
$columns[$column_name]['TABLE_NAME'] = $table;
$columns[$column_name]['ORDINAL_POSITION'] = $ordinal_position;
$columns[$column_name]['DATA_TYPE']
= substr(
$columns[$column_name]['COLUMN_TYPE'],
0,
strpos($columns[$column_name]['COLUMN_TYPE'], '(')
);
/**
* @todo guess CHARACTER_MAXIMUM_LENGTH from COLUMN_TYPE
*/
$columns[$column_name]['CHARACTER_MAXIMUM_LENGTH'] = null;
/**
* @todo guess CHARACTER_OCTET_LENGTH from CHARACTER_MAXIMUM_LENGTH
*/
$columns[$column_name]['CHARACTER_OCTET_LENGTH'] = null;
$columns[$column_name]['NUMERIC_PRECISION'] = null;
$columns[$column_name]['NUMERIC_SCALE'] = null;
$columns[$column_name]['CHARACTER_SET_NAME']
= substr(
$columns[$column_name]['COLLATION_NAME'],
0,
strpos($columns[$column_name]['COLLATION_NAME'], '_')
);
$ordinal_position++;
}
if (null !== $column) {
return reset($columns);
}
return $columns;
}
}
/**
* Returns SQL query for fetching columns for a table
*
* The 'Key' column is not calculated properly, use $GLOBALS['dbi']->getColumns()
* to get correct values.
*
* @param string $database name of database
* @param string $table name of table to retrieve columns from
* @param string $column name of column, null to show all columns
* @param boolean $full whether to return full info or only column names
*
* @see getColumns()
*
* @return string
*/
public function getColumnsSql($database, $table, $column = null, $full = false)
{
$sql = 'SHOW ' . ($full ? 'FULL' : '') . ' COLUMNS FROM '
. Util::backquote($database) . '.' . Util::backquote($table)
. (($column !== null) ? "LIKE '"
. $GLOBALS['dbi']->escapeString($column) . "'" : '');
return $sql;
}
/**
* Returns descriptions of columns in given table (all or given by $column)
*
* @param string $database name of database
* @param string $table name of table to retrieve columns from
* @param string $column name of column, null to show all columns
* @param boolean $full whether to return full info or only column names
* @param mixed $link mysql link resource
*
* @return array array indexed by column names or,
* if $column is given, flat array description
*/
public function getColumns($database, $table, $column = null, $full = false,
$link = null
) {
$sql = $this->getColumnsSql($database, $table, $column, $full);
$fields = $this->fetchResult($sql, 'Field', null, $link);
if (! is_array($fields) || count($fields) == 0) {
return array();
}
// Check if column is a part of multiple-column index and set its 'Key'.
$indexes = Index::getFromTable($table, $database);
foreach ($fields as $field => $field_data) {
if (!empty($field_data['Key'])) {
continue;
}
foreach ($indexes as $index) {
/** @var Index $index */
if (!$index->hasColumn($field)) {
continue;
}
$index_columns = $index->getColumns();
if ($index_columns[$field]->getSeqInIndex() > 1) {
if ($index->isUnique()) {
$fields[$field]['Key'] = 'UNI';
} else {
$fields[$field]['Key'] = 'MUL';
}
}
}
}
return ($column != null) ? array_shift($fields) : $fields;
}
/**
* Returns all column names in given table
*
* @param string $database name of database
* @param string $table name of table to retrieve columns from
* @param mixed $link mysql link resource
*
* @return null|array
*/
public function getColumnNames($database, $table, $link = null)
{
$sql = $this->getColumnsSql($database, $table);
// We only need the 'Field' column which contains the table's column names
$fields = array_keys($this->fetchResult($sql, 'Field', null, $link));
if (! is_array($fields) || count($fields) == 0) {
return null;
}
return $fields;
}
/**
* Returns SQL for fetching information on table indexes (SHOW INDEXES)
*
* @param string $database name of database
* @param string $table name of the table whose indexes are to be retrieved
* @param string $where additional conditions for WHERE
*
* @return string SQL for getting indexes
*/
public function getTableIndexesSql($database, $table, $where = null)
{
$sql = 'SHOW INDEXES FROM ' . Util::backquote($database) . '.'
. Util::backquote($table);
if ($where) {
$sql .= ' WHERE (' . $where . ')';
}
return $sql;
}
/**
* Returns indexes of a table
*
* @param string $database name of database
* @param string $table name of the table whose indexes are to be retrieved
* @param mixed $link mysql link resource
*
* @return array $indexes
*/
public function getTableIndexes($database, $table, $link = null)
{
$sql = $this->getTableIndexesSql($database, $table);
$indexes = $this->fetchResult($sql, null, null, $link);
if (! is_array($indexes) || count($indexes) < 1) {
return array();
}
return $indexes;
}
/**
* returns value of given mysql server variable
*
* @param string $var mysql server variable name
* @param int $type DatabaseInterface::GETVAR_SESSION |
* DatabaseInterface::GETVAR_GLOBAL
* @param mixed $link mysql link resource|object
*
* @return mixed value for mysql server variable
*/
public function getVariable(
$var, $type = self::GETVAR_SESSION, $link = null
) {
$link = $this->getLink($link);
if ($link === false) {
return false;
}
switch ($type) {
case self::GETVAR_SESSION:
$modifier = ' SESSION';
break;
case self::GETVAR_GLOBAL:
$modifier = ' GLOBAL';
break;
default:
$modifier = '';
}
return $this->fetchValue(
'SHOW' . $modifier . ' VARIABLES LIKE \'' . $var . '\';', 0, 1, $link
);
}
/**
* Sets new value for a variable if it is different from the current value
*
* @param string $var variable name
* @param string $value value to set
* @param mixed $link mysql link resource|object
*
* @return bool whether query was a successful
*/
public function setVariable($var, $value, $link = null)
{
$link = $this->getLink($link);
if ($link === false) {
return false;
}
$current_value = $this->getVariable(
$var, self::GETVAR_SESSION, $link
);
if ($current_value == $value) {
return true;
}
return $this->query("SET " . $var . " = " . $value . ';', $link);
}
/**
* Function called just after a connection to the MySQL database server has
* been established. It sets the connection collation, and determines the
* version of MySQL which is running.
*
* @param mixed $link mysql link resource|object
*
* @return void
*/
public function postConnect($link)
{
if (! defined('PMA_MYSQL_INT_VERSION')) {
$version = $this->fetchSingleRow(
'SELECT @@version, @@version_comment',
'ASSOC',
$link
);
if ($version) {
$match = explode('.', $version['@@version']);
define('PMA_MYSQL_MAJOR_VERSION', (int)$match[0]);
define(
'PMA_MYSQL_INT_VERSION',
(int) sprintf(
'%d%02d%02d', $match[0], $match[1], intval($match[2])
)
);
define('PMA_MYSQL_STR_VERSION', $version['@@version']);
define(
'PMA_MYSQL_VERSION_COMMENT',
$version['@@version_comment']
);
} else {
define('PMA_MYSQL_INT_VERSION', 50501);
define('PMA_MYSQL_MAJOR_VERSION', 5);
define('PMA_MYSQL_STR_VERSION', '5.05.01');
define('PMA_MYSQL_VERSION_COMMENT', '');
}
/* Detect MariaDB */
if (mb_strpos(PMA_MYSQL_STR_VERSION, 'MariaDB') !== false) {
define('PMA_MARIADB', true);
} else {
define('PMA_MARIADB', false);
}
}
if (PMA_MYSQL_INT_VERSION > 50503) {
$default_charset = 'utf8mb4';
$default_collation = 'utf8mb4_general_ci';
} else {
$default_charset = 'utf8';
$default_collation = 'utf8_general_ci';
}
$collation_connection = $GLOBALS['PMA_Config']->get('collation_connection');
if (! empty($collation_connection)) {
$this->query(
"SET CHARACTER SET '$default_charset';",
$link,
self::QUERY_STORE
);
/* Automatically adjust collation if not supported by server */
if ($default_charset == 'utf8'
&& strncmp('utf8mb4_', $collation_connection, 8) == 0
) {
$collation_connection = 'utf8_' . substr($collation_connection, 8);
}
$result = $this->tryQuery(
"SET collation_connection = '"
. $this->escapeString($collation_connection, $link)
. "';",
$link,
self::QUERY_STORE
);
if ($result === false) {
trigger_error(
__('Failed to set configured collation connection!'),
E_USER_WARNING
);
$this->query(
"SET collation_connection = '"
. $this->escapeString($collation_connection, $link)
. "';",
$link,
self::QUERY_STORE
);
}
} else {
$this->query(
"SET NAMES '$default_charset' COLLATE '$default_collation';",
$link,
self::QUERY_STORE
);
}
/* Locale for messages */
$locale = LanguageManager::getInstance()->getCurrentLanguage()->getMySQLLocale();
if (! empty($locale)) {
$this->query(
"SET lc_messages = '" . $locale . "';",
$link,
self::QUERY_STORE
);
}
}
/**
* returns a single value from the given result or query,
* if the query or the result has more than one row or field
* the first field of the first row is returned
*
*
* $sql = 'SELECT `name` FROM `user` WHERE `id` = 123';
* $user_name = $GLOBALS['dbi']->fetchValue($sql);
* // produces
* // $user_name = 'John Doe'
*
*
* @param string $query The query to execute
* @param integer $row_number row to fetch the value from,
* starting at 0, with 0 being default
* @param integer|string $field field to fetch the value from,
* starting at 0, with 0 being default
* @param object $link mysql link
*
* @return mixed value of first field in first row from result
* or false if not found
*/
public function fetchValue($query, $row_number = 0, $field = 0, $link = null)
{
$value = false;
$result = $this->tryQuery(
$query,
$link,
self::QUERY_STORE,
false
);
if ($result === false) {
return false;
}
// return false if result is empty or false
// or requested row is larger than rows in result
if ($this->numRows($result) < ($row_number + 1)) {
return $value;
}
// if $field is an integer use non associative mysql fetch function
if (is_int($field)) {
$fetch_function = 'fetchRow';
} else {
$fetch_function = 'fetchAssoc';
}
// get requested row
for ($i = 0; $i <= $row_number; $i++) {
$row = $this->$fetch_function($result);
}
$this->freeResult($result);
// return requested field
if (isset($row[$field])) {
$value = $row[$field];
}
return $value;
}
/**
* returns only the first row from the result
*
*
* $sql = 'SELECT * FROM `user` WHERE `id` = 123';
* $user = $GLOBALS['dbi']->fetchSingleRow($sql);
* // produces
* // $user = array('id' => 123, 'name' => 'John Doe')
*
*
* @param string $query The query to execute
* @param string $type NUM|ASSOC|BOTH returned array should either
* numeric associative or both
* @param object $link mysql link
*
* @return array|boolean first row from result
* or false if result is empty
*/
public function fetchSingleRow($query, $type = 'ASSOC', $link = null)
{
$result = $this->tryQuery(
$query,
$link,
self::QUERY_STORE,
false
);
if ($result === false) {
return false;
}
// return false if result is empty or false
if (! $this->numRows($result)) {
return false;
}
switch ($type) {
case 'NUM' :
$fetch_function = 'fetchRow';
break;
case 'ASSOC' :
$fetch_function = 'fetchAssoc';
break;
case 'BOTH' :
default :
$fetch_function = 'fetchArray';
break;
}
$row = $this->$fetch_function($result);
$this->freeResult($result);
return $row;
}
/**
* Returns row or element of a row
*
* @param array $row Row to process
* @param string|null $value Which column to return
*
* @return mixed
*/
private function _fetchValue($row, $value)
{
if (is_null($value)) {
return $row;
} else {
return $row[$value];
}
}
/**
* returns all rows in the resultset in one array
*
*
* $sql = 'SELECT * FROM `user`';
* $users = $GLOBALS['dbi']->fetchResult($sql);
* // produces
* // $users[] = array('id' => 123, 'name' => 'John Doe')
*
* $sql = 'SELECT `id`, `name` FROM `user`';
* $users = $GLOBALS['dbi']->fetchResult($sql, 'id');
* // produces
* // $users['123'] = array('id' => 123, 'name' => 'John Doe')
*
* $sql = 'SELECT `id`, `name` FROM `user`';
* $users = $GLOBALS['dbi']->fetchResult($sql, 0);
* // produces
* // $users['123'] = array(0 => 123, 1 => 'John Doe')
*
* $sql = 'SELECT `id`, `name` FROM `user`';
* $users = $GLOBALS['dbi']->fetchResult($sql, 'id', 'name');
* // or
* $users = $GLOBALS['dbi']->fetchResult($sql, 0, 1);
* // produces
* // $users['123'] = 'John Doe'
*
* $sql = 'SELECT `name` FROM `user`';
* $users = $GLOBALS['dbi']->fetchResult($sql);
* // produces
* // $users[] = 'John Doe'
*
* $sql = 'SELECT `group`, `name` FROM `user`'
* $users = $GLOBALS['dbi']->fetchResult($sql, array('group', null), 'name');
* // produces
* // $users['admin'][] = 'John Doe'
*
* $sql = 'SELECT `group`, `name` FROM `user`'
* $users = $GLOBALS['dbi']->fetchResult($sql, array('group', 'name'), 'id');
* // produces
* // $users['admin']['John Doe'] = '123'
*
*
* @param string $query query to execute
* @param string|integer|array $key field-name or offset
* used as key for array
* or array of those
* @param string|integer $value value-name or offset
* used as value for array
* @param object $link mysql link
* @param integer $options query options
*
* @return array resultrows or values indexed by $key
*/
public function fetchResult($query, $key = null, $value = null,
$link = null, $options = 0
) {
$resultrows = array();
$result = $this->tryQuery($query, $link, $options, false);
// return empty array if result is empty or false
if ($result === false) {
return $resultrows;
}
$fetch_function = 'fetchAssoc';
// no nested array if only one field is in result
if (null === $key && 1 === $this->numFields($result)) {
$value = 0;
$fetch_function = 'fetchRow';
}
// if $key is an integer use non associative mysql fetch function
if (is_int($key)) {
$fetch_function = 'fetchRow';
}
if (null === $key) {
while ($row = $this->$fetch_function($result)) {
$resultrows[] = $this->_fetchValue($row, $value);
}
} else {
if (is_array($key)) {
while ($row = $this->$fetch_function($result)) {
$result_target =& $resultrows;
foreach ($key as $key_index) {
if (null === $key_index) {
$result_target =& $result_target[];
continue;
}
if (! isset($result_target[$row[$key_index]])) {
$result_target[$row[$key_index]] = array();
}
$result_target =& $result_target[$row[$key_index]];
}
$result_target = $this->_fetchValue($row, $value);
}
} else {
while ($row = $this->$fetch_function($result)) {
$resultrows[$row[$key]] = $this->_fetchValue($row, $value);
}
}
}
$this->freeResult($result);
return $resultrows;
}
/**
* Get supported SQL compatibility modes
*
* @return array supported SQL compatibility modes
*/
public function getCompatibilities()
{
$compats = array('NONE');
$compats[] = 'ANSI';
$compats[] = 'DB2';
$compats[] = 'MAXDB';
$compats[] = 'MYSQL323';
$compats[] = 'MYSQL40';
$compats[] = 'MSSQL';
$compats[] = 'ORACLE';
// removed; in MySQL 5.0.33, this produces exports that
// can't be read by POSTGRESQL (see our bug #1596328)
//$compats[] = 'POSTGRESQL';
$compats[] = 'TRADITIONAL';
return $compats;
}
/**
* returns warnings for last query
*
* @param object $link mysql link resource
*
* @return array warnings
*/
public function getWarnings($link = null)
{
$link = $this->getLink($link);
if ($link === false) {
return false;
}
return $this->fetchResult('SHOW WARNINGS', null, null, $link);
}
/**
* returns an array of PROCEDURE or FUNCTION names for a db
*
* @param string $db db name
* @param string $which PROCEDURE | FUNCTION
* @param object $link mysql link
*
* @return array the procedure names or function names
*/
public function getProceduresOrFunctions($db, $which, $link = null)
{
$shows = $this->fetchResult(
'SHOW ' . $which . ' STATUS;', null, null, $link
);
$result = array();
foreach ($shows as $one_show) {
if ($one_show['Db'] == $db && $one_show['Type'] == $which) {
$result[] = $one_show['Name'];
}
}
return($result);
}
/**
* returns the definition of a specific PROCEDURE, FUNCTION, EVENT or VIEW
*
* @param string $db db name
* @param string $which PROCEDURE | FUNCTION | EVENT | VIEW
* @param string $name the procedure|function|event|view name
* @param object $link MySQL link
*
* @return string the definition
*/
public function getDefinition($db, $which, $name, $link = null)
{
$returned_field = array(
'PROCEDURE' => 'Create Procedure',
'FUNCTION' => 'Create Function',
'EVENT' => 'Create Event',
'VIEW' => 'Create View'
);
$query = 'SHOW CREATE ' . $which . ' '
. Util::backquote($db) . '.'
. Util::backquote($name);
return($this->fetchValue($query, 0, $returned_field[$which], $link));
}
/**
* returns details about the PROCEDUREs or FUNCTIONs for a specific database
* or details about a specific routine
*
* @param string $db db name
* @param string $which PROCEDURE | FUNCTION or null for both
* @param string $name name of the routine (to fetch a specific routine)
*
* @return array information about ROCEDUREs or FUNCTIONs
*/
public function getRoutines($db, $which = null, $name = '')
{
$routines = array();
if (! $GLOBALS['cfg']['Server']['DisableIS']) {
$query = "SELECT"
. " `ROUTINE_SCHEMA` AS `Db`,"
. " `SPECIFIC_NAME` AS `Name`,"
. " `ROUTINE_TYPE` AS `Type`,"
. " `DEFINER` AS `Definer`,"
. " `LAST_ALTERED` AS `Modified`,"
. " `CREATED` AS `Created`,"
. " `SECURITY_TYPE` AS `Security_type`,"
. " `ROUTINE_COMMENT` AS `Comment`,"
. " `CHARACTER_SET_CLIENT` AS `character_set_client`,"
. " `COLLATION_CONNECTION` AS `collation_connection`,"
. " `DATABASE_COLLATION` AS `Database Collation`,"
. " `DTD_IDENTIFIER`"
. " FROM `information_schema`.`ROUTINES`"
. " WHERE `ROUTINE_SCHEMA` " . Util::getCollateForIS()
. " = '" . $GLOBALS['dbi']->escapeString($db) . "'";
if (PMA_isValid($which, array('FUNCTION','PROCEDURE'))) {
$query .= " AND `ROUTINE_TYPE` = '" . $which . "'";
}
if (! empty($name)) {
$query .= " AND `SPECIFIC_NAME`"
. " = '" . $GLOBALS['dbi']->escapeString($name) . "'";
}
$result = $this->fetchResult($query);
if (!empty($result)) {
$routines = $result;
}
} else {
if ($which == 'FUNCTION' || $which == null) {
$query = "SHOW FUNCTION STATUS"
. " WHERE `Db` = '" . $GLOBALS['dbi']->escapeString($db) . "'";
if (! empty($name)) {
$query .= " AND `Name` = '"
. $GLOBALS['dbi']->escapeString($name) . "'";
}
$result = $this->fetchResult($query);
if (!empty($result)) {
$routines = array_merge($routines, $result);
}
}
if ($which == 'PROCEDURE' || $which == null) {
$query = "SHOW PROCEDURE STATUS"
. " WHERE `Db` = '" . $GLOBALS['dbi']->escapeString($db) . "'";
if (! empty($name)) {
$query .= " AND `Name` = '"
. $GLOBALS['dbi']->escapeString($name) . "'";
}
$result = $this->fetchResult($query);
if (!empty($result)) {
$routines = array_merge($routines, $result);
}
}
}
$ret = array();
foreach ($routines as $routine) {
$one_result = array();
$one_result['db'] = $routine['Db'];
$one_result['name'] = $routine['Name'];
$one_result['type'] = $routine['Type'];
$one_result['definer'] = $routine['Definer'];
$one_result['returns'] = isset($routine['DTD_IDENTIFIER'])
? $routine['DTD_IDENTIFIER'] : "";
$ret[] = $one_result;
}
// Sort results by name
$name = array();
foreach ($ret as $value) {
$name[] = $value['name'];
}
array_multisort($name, SORT_ASC, $ret);
return($ret);
}
/**
* returns details about the EVENTs for a specific database
*
* @param string $db db name
* @param string $name event name
*
* @return array information about EVENTs
*/
public function getEvents($db, $name = '')
{
if (! $GLOBALS['cfg']['Server']['DisableIS']) {
$query = "SELECT"
. " `EVENT_SCHEMA` AS `Db`,"
. " `EVENT_NAME` AS `Name`,"
. " `DEFINER` AS `Definer`,"
. " `TIME_ZONE` AS `Time zone`,"
. " `EVENT_TYPE` AS `Type`,"
. " `EXECUTE_AT` AS `Execute at`,"
. " `INTERVAL_VALUE` AS `Interval value`,"
. " `INTERVAL_FIELD` AS `Interval field`,"
. " `STARTS` AS `Starts`,"
. " `ENDS` AS `Ends`,"
. " `STATUS` AS `Status`,"
. " `ORIGINATOR` AS `Originator`,"
. " `CHARACTER_SET_CLIENT` AS `character_set_client`,"
. " `COLLATION_CONNECTION` AS `collation_connection`, "
. "`DATABASE_COLLATION` AS `Database Collation`"
. " FROM `information_schema`.`EVENTS`"
. " WHERE `EVENT_SCHEMA` " . Util::getCollateForIS()
. " = '" . $GLOBALS['dbi']->escapeString($db) . "'";
if (! empty($name)) {
$query .= " AND `EVENT_NAME`"
. " = '" . $GLOBALS['dbi']->escapeString($name) . "'";
}
} else {
$query = "SHOW EVENTS FROM " . Util::backquote($db);
if (! empty($name)) {
$query .= " AND `Name` = '"
. $GLOBALS['dbi']->escapeString($name) . "'";
}
}
$result = array();
if ($events = $this->fetchResult($query)) {
foreach ($events as $event) {
$one_result = array();
$one_result['name'] = $event['Name'];
$one_result['type'] = $event['Type'];
$one_result['status'] = $event['Status'];
$result[] = $one_result;
}
}
// Sort results by name
$name = array();
foreach ($result as $value) {
$name[] = $value['name'];
}
array_multisort($name, SORT_ASC, $result);
return $result;
}
/**
* returns details about the TRIGGERs for a specific table or database
*
* @param string $db db name
* @param string $table table name
* @param string $delimiter the delimiter to use (may be empty)
*
* @return array information about triggers (may be empty)
*/
public function getTriggers($db, $table = '', $delimiter = '//')
{
$result = array();
if (! $GLOBALS['cfg']['Server']['DisableIS']) {
$query = 'SELECT TRIGGER_SCHEMA, TRIGGER_NAME, EVENT_MANIPULATION'
. ', EVENT_OBJECT_TABLE, ACTION_TIMING, ACTION_STATEMENT'
. ', EVENT_OBJECT_SCHEMA, EVENT_OBJECT_TABLE, DEFINER'
. ' FROM information_schema.TRIGGERS'
. ' WHERE EVENT_OBJECT_SCHEMA ' . Util::getCollateForIS() . '='
. ' \'' . $GLOBALS['dbi']->escapeString($db) . '\'';
if (! empty($table)) {
$query .= " AND EVENT_OBJECT_TABLE " . Util::getCollateForIS()
. " = '" . $GLOBALS['dbi']->escapeString($table) . "';";
}
} else {
$query = "SHOW TRIGGERS FROM " . Util::backquote($db);
if (! empty($table)) {
$query .= " LIKE '" . $GLOBALS['dbi']->escapeString($table) . "';";
}
}
if ($triggers = $this->fetchResult($query)) {
foreach ($triggers as $trigger) {
if ($GLOBALS['cfg']['Server']['DisableIS']) {
$trigger['TRIGGER_NAME'] = $trigger['Trigger'];
$trigger['ACTION_TIMING'] = $trigger['Timing'];
$trigger['EVENT_MANIPULATION'] = $trigger['Event'];
$trigger['EVENT_OBJECT_TABLE'] = $trigger['Table'];
$trigger['ACTION_STATEMENT'] = $trigger['Statement'];
$trigger['DEFINER'] = $trigger['Definer'];
}
$one_result = array();
$one_result['name'] = $trigger['TRIGGER_NAME'];
$one_result['table'] = $trigger['EVENT_OBJECT_TABLE'];
$one_result['action_timing'] = $trigger['ACTION_TIMING'];
$one_result['event_manipulation'] = $trigger['EVENT_MANIPULATION'];
$one_result['definition'] = $trigger['ACTION_STATEMENT'];
$one_result['definer'] = $trigger['DEFINER'];
// do not prepend the schema name; this way, importing the
// definition into another schema will work
$one_result['full_trigger_name'] = Util::backquote(
$trigger['TRIGGER_NAME']
);
$one_result['drop'] = 'DROP TRIGGER IF EXISTS '
. $one_result['full_trigger_name'];
$one_result['create'] = 'CREATE TRIGGER '
. $one_result['full_trigger_name'] . ' '
. $trigger['ACTION_TIMING'] . ' '
. $trigger['EVENT_MANIPULATION']
. ' ON ' . Util::backquote($trigger['EVENT_OBJECT_TABLE'])
. "\n" . ' FOR EACH ROW '
. $trigger['ACTION_STATEMENT'] . "\n" . $delimiter . "\n";
$result[] = $one_result;
}
}
// Sort results by name
$name = array();
foreach ($result as $value) {
$name[] = $value['name'];
}
array_multisort($name, SORT_ASC, $result);
return($result);
}
/**
* Formats database error message in a friendly way.
* This is needed because some errors messages cannot
* be obtained by mysql_error().
*
* @param int $error_number Error code
* @param string $error_message Error message as returned by server
*
* @return string HML text with error details
*/
public function formatError($error_number, $error_message)
{
$error_message = htmlspecialchars($error_message);
$error = '#' . ((string) $error_number);
$separator = ' — ';
if ($error_number == 2002) {
$error .= ' - ' . $error_message;
$error .= $separator;
$error .= __(
'The server is not responding (or the local server\'s socket'
. ' is not correctly configured).'
);
} elseif ($error_number == 2003) {
$error .= ' - ' . $error_message;
$error .= $separator . __('The server is not responding.');
} elseif ($error_number == 1005) {
if (strpos($error_message, 'errno: 13') !== false) {
$error .= ' - ' . $error_message;
$error .= $separator
. __(
'Please check privileges of directory containing database.'
);
} else {
/* InnoDB constraints, see
* https://dev.mysql.com/doc/refman/5.0/en/
* innodb-foreign-key-constraints.html
*/
$error .= ' - ' . $error_message .
' (' . __('Details…') . ')';
}
} else {
$error .= ' - ' . $error_message;
}
return $error;
}
/**
* gets the current user with host
*
* @return string the current user i.e. user@host
*/
public function getCurrentUser()
{
if (Util::cacheExists('mysql_cur_user')) {
return Util::cacheGet('mysql_cur_user');
}
$user = $this->fetchValue('SELECT CURRENT_USER();');
if ($user !== false) {
Util::cacheSet('mysql_cur_user', $user);
return $user;
}
return '@';
}
/**
* Checks if current user is superuser
*
* @return bool Whether user is a superuser
*/
public function isSuperuser()
{
return self::isUserType('super');
}
/**
* Checks if current user has global create user/grant privilege
* or is a superuser (i.e. SELECT on mysql.users)
* while caching the result in session.
*
* @param string $type type of user to check for
* i.e. 'create', 'grant', 'super'
*
* @return bool Whether user is a given type of user
*/
public function isUserType($type)
{
if (Util::cacheExists('is_' . $type . 'user')) {
return Util::cacheGet('is_' . $type . 'user');
}
// when connection failed we don't have a $userlink
if (! isset($GLOBALS['userlink'])) {
Util::cacheSet('is_' . $type . 'user', false);
return Util::cacheGet('is_' . $type . 'user');
}
if (! $GLOBALS['cfg']['Server']['DisableIS'] || $type === 'super') {
// Prepare query for each user type check
$query = '';
if ($type === 'super') {
$query = 'SELECT 1 FROM mysql.user LIMIT 1';
} elseif ($type === 'create') {
list($user, $host) = $this->getCurrentUserAndHost();
$query = "SELECT 1 FROM `INFORMATION_SCHEMA`.`USER_PRIVILEGES` "
. "WHERE `PRIVILEGE_TYPE` = 'CREATE USER' AND "
. "'''" . $user . "''@''" . $host . "''' LIKE `GRANTEE` LIMIT 1";
} elseif ($type === 'grant') {
list($user, $host) = $this->getCurrentUserAndHost();
$query = "SELECT 1 FROM ("
. "SELECT `GRANTEE`, `IS_GRANTABLE` FROM "
. "`INFORMATION_SCHEMA`.`COLUMN_PRIVILEGES` UNION "
. "SELECT `GRANTEE`, `IS_GRANTABLE` FROM "
. "`INFORMATION_SCHEMA`.`TABLE_PRIVILEGES` UNION "
. "SELECT `GRANTEE`, `IS_GRANTABLE` FROM "
. "`INFORMATION_SCHEMA`.`SCHEMA_PRIVILEGES` UNION "
. "SELECT `GRANTEE`, `IS_GRANTABLE` FROM "
. "`INFORMATION_SCHEMA`.`USER_PRIVILEGES`) t "
. "WHERE `IS_GRANTABLE` = 'YES' AND "
. "'''" . $user . "''@''" . $host . "''' LIKE `GRANTEE` LIMIT 1";
}
$is = false;
$result = $this->tryQuery(
$query,
$GLOBALS['userlink'],
self::QUERY_STORE
);
if ($result) {
$is = (bool) $this->numRows($result);
}
$this->freeResult($result);
Util::cacheSet('is_' . $type . 'user', $is);
} else {
$is = false;
$grants = $this->fetchResult(
"SHOW GRANTS FOR CURRENT_USER();",
null,
null,
$GLOBALS['userlink'],
self::QUERY_STORE
);
if ($grants) {
foreach ($grants as $grant) {
if ($type === 'create') {
if (strpos($grant, "ALL PRIVILEGES ON *.*") !== false
|| strpos($grant, "CREATE USER") !== false
) {
$is = true;
break;
}
} elseif ($type === 'grant') {
if (strpos($grant, "WITH GRANT OPTION") !== false) {
$is = true;
break;
}
}
}
}
Util::cacheSet('is_' . $type . 'user', $is);
}
return Util::cacheGet('is_' . $type . 'user');
}
/**
* Get the current user and host
*
* @return array array of username and hostname
*/
public function getCurrentUserAndHost()
{
if (count($this->_current_user) == 0) {
$user = $this->getCurrentUser();
$this->_current_user = explode("@", $user);
}
return $this->_current_user;
}
/**
* Returns value for lower_case_table_names variable
*
* @return string
*/
public function getLowerCaseNames()
{
if (is_null($this->_lower_case_table_names)) {
$this->_lower_case_table_names = $this->fetchValue(
"SELECT @@lower_case_table_names"
);
}
return $this->_lower_case_table_names;
}
/**
* Get the list of system schemas
*
* @return array list of system schemas
*/
public function getSystemSchemas()
{
$schemas = array(
'information_schema', 'performance_schema', 'mysql', 'sys'
);
$systemSchemas = array();
foreach ($schemas as $schema) {
if ($this->isSystemSchema($schema, true)) {
$systemSchemas[] = $schema;
}
}
return $systemSchemas;
}
/**
* Checks whether given schema is a system schema
*
* @param string $schema_name Name of schema (database) to test
* @param bool $testForMysqlSchema Whether 'mysql' schema should
* be treated the same as IS and DD
*
* @return bool
*/
public function isSystemSchema($schema_name, $testForMysqlSchema = false)
{
$schema_name = strtolower($schema_name);
return $schema_name == 'information_schema'
|| $schema_name == 'performance_schema'
|| ($schema_name == 'mysql' && $testForMysqlSchema)
|| $schema_name == 'sys';
}
/**
* Return connection parameters for the database server
*
* @param integer $mode Connection mode on of CONNECT_USER, CONNECT_CONTROL
* or CONNECT_AUXILIARY.
* @param array $server Server information like host/port/socket/persistent
*
* @return array user, host and server settings array
*/
public function getConnectionParams($mode, $server = null)
{
global $cfg;
$user = null;
$password = null;
if ($mode == DatabaseInterface::CONNECT_USER) {
$user = $cfg['Server']['user'];
$password = $cfg['Server']['password'];
$server = $cfg['Server'];
} elseif ($mode == DatabaseInterface::CONNECT_CONTROL) {
$user = $cfg['Server']['controluser'];
$password = $cfg['Server']['controlpass'];
$server = array();
if (! empty($cfg['Server']['controlhost'])) {
$server['host'] = $cfg['Server']['controlhost'];
} else {
$server['host'] = $cfg['Server']['host'];
}
// Share the settings if the host is same
if ($server['host'] == $cfg['Server']['host']) {
$shared = array(
'port', 'socket', 'compress',
'ssl', 'ssl_key', 'ssl_cert', 'ssl_ca',
'ssl_ca_path', 'ssl_ciphers', 'ssl_verify',
);
foreach ($shared as $item) {
if (isset($cfg['Server'][$item])) {
$server[$item] = $cfg['Server'][$item];
}
}
}
// Set configured port
if (! empty($cfg['Server']['controlport'])) {
$server['port'] = $cfg['Server']['controlport'];
}
// Set any configuration with control_ prefix
foreach ($cfg['Server'] as $key => $val) {
if (substr($key, 0, 8) === 'control_') {
$server[substr($key, 8)] = $val;
}
}
} else {
if (is_null($server)) {
return array(null, null, null);
}
if (isset($server['user'])) {
$user = $server['user'];
}
if (isset($server['password'])) {
$password = $server['password'];
}
}
// Perform sanity checks on some variables
if (empty($server['port'])) {
$server['port'] = 0;
} else {
$server['port'] = intval($server['port']);
}
if (empty($server['socket'])) {
$server['socket'] = null;
}
if (empty($server['host'])) {
$server['host'] = 'localhost';
}
if (!isset($server['ssl'])) {
$server['ssl'] = false;
}
if (!isset($server['compress'])) {
$server['compress'] = false;
}
return array($user, $password, $server);
}
/**
* connects to the database server
*
* @param integer $mode Connection mode on of CONNECT_USER, CONNECT_CONTROL
* or CONNECT_AUXILIARY.
* @param array $server Server information like host/port/socket/persistent
*
* @return mixed false on error or a connection object on success
*/
public function connect($mode, $server = null)
{
list($user, $password, $server) = $this->getConnectionParams($mode, $server);
if (is_null($user) || is_null($password)) {
trigger_error(
__('Missing connection parameters!'),
E_USER_WARNING
);
return false;
}
// Do not show location and backtrace for connection errors
$GLOBALS['error_handler']->setHideLocation(true);
$result = $this->_extension->connect(
$user, $password, $server
);
$GLOBALS['error_handler']->setHideLocation(false);
if ($result) {
/* Run post connect for user connections */
if ($mode == DatabaseInterface::CONNECT_USER) {
$this->postConnect($result);
}
return $result;
}
if ($mode == DatabaseInterface::CONNECT_CONTROL) {
trigger_error(
__(
'Connection for controluser as defined in your '
. 'configuration failed.'
),
E_USER_WARNING
);
return false;
} else if ($mode == DatabaseInterface::CONNECT_AUXILIARY) {
// Do not go back to main login if connection failed
// (currently used only in unit testing)
return false;
}
Logging::logUser($user, 'mysql-denied');
$GLOBALS['auth_plugin']->authFails();
return $result;
}
/**
* selects given database
*
* @param string $dbname database name to select
* @param object $link connection object
*
* @return boolean
*/
public function selectDb($dbname, $link = null)
{
$link = $this->getLink($link);
if ($link === false) {
return false;
}
return $this->_extension->selectDb($dbname, $link);
}
/**
* returns array of rows with associative and numeric keys from $result
*
* @param object $result result set identifier
*
* @return array
*/
public function fetchArray($result)
{
return $this->_extension->fetchArray($result);
}
/**
* returns array of rows with associative keys from $result
*
* @param object $result result set identifier
*
* @return array
*/
public function fetchAssoc($result)
{
return $this->_extension->fetchAssoc($result);
}
/**
* returns array of rows with numeric keys from $result
*
* @param object $result result set identifier
*
* @return array
*/
public function fetchRow($result)
{
return $this->_extension->fetchRow($result);
}
/**
* Adjusts the result pointer to an arbitrary row in the result
*
* @param object $result database result
* @param integer $offset offset to seek
*
* @return bool true on success, false on failure
*/
public function dataSeek($result, $offset)
{
return $this->_extension->dataSeek($result, $offset);
}
/**
* Frees memory associated with the result
*
* @param object $result database result
*
* @return void
*/
public function freeResult($result)
{
$this->_extension->freeResult($result);
}
/**
* Check if there are any more query results from a multi query
*
* @param object $link the connection object
*
* @return bool true or false
*/
public function moreResults($link = null)
{
$link = $this->getLink($link);
if ($link === false) {
return false;
}
return $this->_extension->moreResults($link);
}
/**
* Prepare next result from multi_query
*
* @param object $link the connection object
*
* @return bool true or false
*/
public function nextResult($link = null)
{
$link = $this->getLink($link);
if ($link === false) {
return false;
}
return $this->_extension->nextResult($link);
}
/**
* Store the result returned from multi query
*
* @param object $link the connection object
*
* @return mixed false when empty results / result set when not empty
*/
public function storeResult($link = null)
{
$link = $this->getLink($link);
if ($link === false) {
return false;
}
return $this->_extension->storeResult($link);
}
/**
* Returns a string representing the type of connection used
*
* @param object $link mysql link
*
* @return string type of connection used
*/
public function getHostInfo($link = null)
{
$link = $this->getLink($link);
if ($link === false) {
return false;
}
return $this->_extension->getHostInfo($link);
}
/**
* Returns the version of the MySQL protocol used
*
* @param object $link mysql link
*
* @return integer version of the MySQL protocol used
*/
public function getProtoInfo($link = null)
{
$link = $this->getLink($link);
if ($link === false) {
return false;
}
return $this->_extension->getProtoInfo($link);
}
/**
* returns a string that represents the client library version
*
* @return string MySQL client library version
*/
public function getClientInfo()
{
return $this->_extension->getClientInfo();
}
/**
* returns last error message or false if no errors occurred
*
* @param object $link connection link
*
* @return string|bool $error or false
*/
public function getError($link = null)
{
$link = $this->getLink($link);
return $this->_extension->getError($link);
}
/**
* returns the number of rows returned by last query
*
* @param object $result result set identifier
*
* @return string|int
*/
public function numRows($result)
{
return $this->_extension->numRows($result);
}
/**
* returns last inserted auto_increment id for given $link
* or $GLOBALS['userlink']
*
* @param object $link the connection object
*
* @return int|boolean
*/
public function insertId($link = null)
{
$link = $this->getLink($link);
if ($link === false) {
return false;
}
// If the primary key is BIGINT we get an incorrect result
// (sometimes negative, sometimes positive)
// and in the present function we don't know if the PK is BIGINT
// so better play safe and use LAST_INSERT_ID()
//
// When no controluser is defined, using mysqli_insert_id($link)
// does not always return the last insert id due to a mixup with
// the tracking mechanism, but this works:
return $this->fetchValue('SELECT LAST_INSERT_ID();', 0, 0, $link);
}
/**
* returns the number of rows affected by last query
*
* @param object $link the connection object
* @param bool $get_from_cache whether to retrieve from cache
*
* @return int|boolean
*/
public function affectedRows($link = null, $get_from_cache = true)
{
$link = $this->getLink($link);
if ($link === false) {
return false;
}
if ($get_from_cache) {
return $GLOBALS['cached_affected_rows'];
} else {
return $this->_extension->affectedRows($link);
}
}
/**
* returns metainfo for fields in $result
*
* @param object $result result set identifier
*
* @return array meta info for fields in $result
*/
public function getFieldsMeta($result)
{
$result = $this->_extension->getFieldsMeta($result);
if ($this->getLowerCaseNames() === '2') {
/**
* Fixup orgtable for lower_case_table_names = 2
*
* In this setup MySQL server reports table name lower case
* but we still need to operate on original case to properly
* match existing strings
*/
foreach ($result as $value) {
if (strlen($value->orgtable) !== 0 &&
mb_strtolower($value->orgtable) === mb_strtolower($value->table)) {
$value->orgtable = $value->table;
}
}
}
return $result;
}
/**
* return number of fields in given $result
*
* @param object $result result set identifier
*
* @return int field count
*/
public function numFields($result)
{
return $this->_extension->numFields($result);
}
/**
* returns the length of the given field $i in $result
*
* @param object $result result set identifier
* @param int $i field
*
* @return int length of field
*/
public function fieldLen($result, $i)
{
return $this->_extension->fieldLen($result, $i);
}
/**
* returns name of $i. field in $result
*
* @param object $result result set identifier
* @param int $i field
*
* @return string name of $i. field in $result
*/
public function fieldName($result, $i)
{
return $this->_extension->fieldName($result, $i);
}
/**
* returns concatenated string of human readable field flags
*
* @param object $result result set identifier
* @param int $i field
*
* @return string field flags
*/
public function fieldFlags($result, $i)
{
return $this->_extension->fieldFlags($result, $i);
}
/**
* returns properly escaped string for use in MySQL queries
*
* @param string $str string to be escaped
* @param mixed $link optional database link to use
*
* @return string a MySQL escaped string
*/
public function escapeString($str, $link = null)
{
if ($link === null) {
$link = $this->getLink();
}
if ($this->_extension === null) {
return $str;
}
return $this->_extension->escapeString($link, $str);
}
/*
* Gets correct link object.
*
* @param object $link optional database link to use
*
* @return object|boolean
*/
public function getLink($link = null)
{
if (! is_null($link) && $link !== false) {
return $link;
}
if (isset($GLOBALS['userlink']) && !is_null($GLOBALS['userlink'])) {
return $GLOBALS['userlink'];
} else {
return false;
}
}
/**
* Checks if this database server is running on Amazon RDS.
*
* @return boolean
*/
public function isAmazonRds()
{
if (Util::cacheExists('is_amazon_rds')) {
return Util::cacheGet('is_amazon_rds');
}
$sql = 'SELECT @@basedir';
$result = $this->fetchResult($sql);
$rds = ($result[0] == '/rdsdbbin/mysql/');
Util::cacheSet('is_amazon_rds', $rds);
return $rds;
}
/**
* Gets SQL for killing a process.
*
* @param int $process Process ID
*
* @return string
*/
public function getKillQuery($process)
{
if ($this->isAmazonRds()) {
return 'CALL mysql.rds_kill(' . $process . ');';
} else {
return 'KILL ' . $process . ';';
}
}
/**
* Get the phpmyadmin database manager
*
* @return SystemDatabase
*/
public function getSystemDatabase()
{
return new SystemDatabase($this);
}
/**
* Get a table with database name and table name
*
* @param string $db_name DB name
* @param string $table_name Table name
*
* @return Table
*/
public function getTable($db_name, $table_name)
{
return new Table($table_name, $db_name, $this);
}
/**
* returns collation of given db
*
* @param string $db name of db
*
* @return string collation of $db
*/
public function getDbCollation($db)
{
if ($this->isSystemSchema($db)) {
// We don't have to check the collation of the virtual
// information_schema database: We know it!
return 'utf8_general_ci';
}
if (! $GLOBALS['cfg']['Server']['DisableIS']) {
// this is slow with thousands of databases
$sql = 'SELECT DEFAULT_COLLATION_NAME FROM information_schema.SCHEMATA'
. ' WHERE SCHEMA_NAME = \'' . $this->escapeString($db)
. '\' LIMIT 1';
return $this->fetchValue($sql);
} else {
$this->selectDb($db);
$return = $this->fetchValue('SELECT @@collation_database');
if ($db !== $GLOBALS['db']) {
$this->selectDb($GLOBALS['db']);
}
return $return;
}
}
/**
* returns default server collation from show variables
*
* @return string $server_collation
*/
function getServerCollation()
{
return $this->fetchValue('SELECT @@collation_server');
}
}