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2851 lines (2609 loc) · 95.4 KB
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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Main interface for database interactions
*
* @package PhpMyAdmin-DBI
*/
namespace PMA\libraries;
use PMA\libraries\dbi\DBIExtension;
use PMA\libraries\LanguageManager;
use PMA\libraries\URL;
use PMA\libraries\Logging;
require_once './libraries/util.lib.php';
/**
* Main interface for database interactions
*
* @package PhpMyAdmin-DBI
*/
class DatabaseInterface
{
/**
* Force STORE_RESULT method, ignored by classic MySQL.
*/
const QUERY_STORE = 1;
/**
* Do not read whole query.
*/
const QUERY_UNBUFFERED = 2;
/**
* Get session variable.
*/
const GETVAR_SESSION = 1;
/**
* Get global variable.
*/
const GETVAR_GLOBAL = 2;
/**
* User connection.
*/
const CONNECT_USER = 0x100;
/**
* Control user connection.
*/
const CONNECT_CONTROL = 0x101;
/**
* Auxiliary connection.
*
* Used for example for replication setup.
*/
const CONNECT_AUXILIARY = 0x102;
/**
* @var DBIExtension
*/
private $_extension;
/**
* @var array Table data cache
*/
private $_table_cache;
/**
* @var array Current user and host cache
*/
private $_current_user;
/**
* @var null|string lower_case_table_names value cache
*/
private $_lower_case_table_names = null;
/**
* Constructor
*
* @param DBIExtension $ext Object to be used for database queries
*/
public function __construct($ext)
{
$this->_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)) {
$dbgInfo['error']
= '<span style="color:red">'
. htmlspecialchars($error_message) . '</span>';
}
$dbgInfo['query'] = htmlspecialchars($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) . ' > ' . $query
);
closelog();
}
}
if ((!empty($result)) && (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
*
* <code>
* $GLOBALS['dbi']->getTablesFull('my_database');
* $GLOBALS['dbi']->getTablesFull('my_database', 'my_table'));
* $GLOBALS['dbi']->getTablesFull('my_database', 'my_tables_', true));
* </code>
*
* @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) {