440 Zeilen
13 KiB
PHP
440 Zeilen
13 KiB
PHP
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<?php
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/**
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* This file is part of MySQLDumper released under the GNU/GPL 2 license
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* http://www.mysqldumper.net
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*
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* @package MySQLDumper
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* @subpackage MsdDbFactory
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* @version SVN: $rev: 1205 $
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* @author $Author$
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* @lastmodified $Date$
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*/
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/**
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* Capsules all database related actions.
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* Uses some magic getters to allow lazy connecting.
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*
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*/
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class MsdDbMysql extends MsdDbFactory
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{
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/**
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* Get all known character sets of this SQL-Server.
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*
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* @return array
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*/
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public function getCharsets()
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{
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if (isset($this->charsets)) return $this->charsets;
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if (false === $this->connectionHandle) $this->dbConnect();
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$result = $this->query('SHOW CHARACTER SET', self::ARRAY_ASSOC);
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$this->charsets = array();
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foreach ($result as $r) {
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$this->charsets[$r['Charset']] = $r;
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}
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@ksort($this->charsets);
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return $this->charsets;
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}
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/**
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* Establish a connection to MySQL.
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*
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* Creates a connection to the database and stores the connection handle in
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* $this->connectionHandle.
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* If $select_database is set, the database is selected for further queries.
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* Returns true on success or false if connection couldn't be established.
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*
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* @param string $select_database
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* @param string $connectionCharset
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*
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* @return bool
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**/
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public function dbConnect($selectDatabase = false)
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{
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if (is_resource($this->connectionHandle)) return true;
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$connectionString = $this->server . ':' . $this->port;
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if ($this->socket > '') $connectionString .= ':' . $this->socket;
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if (false === $this->connectionHandle) {
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$this->connectionHandle = @mysql_connect(
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$connectionString,
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$this->user, $this->password
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);
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if (false === $this->connectionHandle) {
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return '(' . mysql_errno() . ') ' . mysql_error();
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}
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}
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$this->setConnectionCharset($this->connectionCharset);
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if (false === $selectDatabase && $this->dbSelected > '') {
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$selectDatabase = $this->dbSelected;
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}
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if ($selectDatabase) {
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try
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{
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$this->selectDb($selectDatabase, $this->connectionHandle);
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$this->dbSelected = $selectDatabase;
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return true;
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} catch (Exception $e) {
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$this->sqlError(
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mysql_error($this->connectionHandle),
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mysql_errno($this->connectionHandle)
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);
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return false;
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}
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}
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return true;
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}
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/**
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* Get version nr of sql server
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*
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* @return string
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*/
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public function getServerInfo()
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{
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if (false === $this->connectionHandle) {
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$this->dbConnect();
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}
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$version = mysql_get_server_info($this->connectionHandle);
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return $version;
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}
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/**
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* Get version nr of sql client
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*
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* @return string
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*/
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public function getClientInfo()
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{
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if (false === $this->connectionHandle) $this->dbConnect();
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$version = mysql_get_client_info();
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return $version;
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}
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/**
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* Set character set of the MySQL-connection.
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*
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* Trys to set the connection charset and returns it.
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* Throw Exception on failure.
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*
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* @param string $charset
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* @throws Exception
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*
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* @return string
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*/
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public function setConnectionCharset($charset = 'utf8')
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{
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if (false === $this->connectionHandle) $this->dbConnect();
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if (function_exists('mysql_set_charset')
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&& @mysql_set_charset($charset, $this->connectionHandle)) {
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$this->connectionCharset = $charset;
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return $this->connectionCharset;
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} else {
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$this->query('SET NAMES \'' . $charset . '\'', self::SIMPLE);
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$this->connectionCharset = $charset;
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return $charset;
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}
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}
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/**
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* Get list of databases
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*
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* Gets list of all databases that the actual MySQL-User has access to
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* and saves it in $this->databases.
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* Returns true on success or false on error.
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*
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* @return array List of found database names
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*/
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public function getDatabases()
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{
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if (false === $this->connectionHandle) $this->dbConnect();
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$this->databases = array();
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$databases = @mysql_list_dbs($this->connectionHandle);
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if (is_resource($databases)) {
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WHILE ($row = mysql_fetch_array($databases, MYSQL_ASSOC)) {
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$this->databases[] = $row['Database'];
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}
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} else {
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//mysql_list_dbs seems not to be allowed for this user
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// try to get list via "SHOW DATABASES"
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$res = $this->query('SHOW DATABASES', self::ARRAY_ASSOC);
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foreach ($res as $r) {
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$this->databases[] = $r['Database'];
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}
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}
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sort($this->databases);
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return $this->databases;
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}
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/**
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* Select the given database to use it as the target for following queries
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*
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* Returns true if selection was succesfull otherwise false.
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*
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* @throws Exception
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* @param string $database
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*
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* @return bool
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*/
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public function selectDb($database)
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{
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if (!is_resource($this->connectionHandle)) {
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$this->dbConnect();
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}
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$res=@mysql_select_db($database, $this->connectionHandle);
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if ($res===false) {
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return mysql_error();
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} else {
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$this->dbSelected = $database;
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return true;
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}
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}
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/**
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* Get selected database
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*
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* @see inc/classes/db/MsdDbFactory#getSelectedDb()
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*
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* @return string
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*/
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public function getSelectedDb()
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{
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return $this->dbSelected;
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}
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/**
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* Execute a query
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*
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* @param $query The query to execute
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* @param $kind Type of result set
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*
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* @return array
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*/
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public function query($query, $kind = self::ARRAY_OBJECT)
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{
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if (false === $this->connectionHandle) {
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$this->dbConnect();
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}
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$res = @mysql_query($query, $this->connectionHandle);
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if (false === $res) {
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$this->sqlError(
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mysql_error($this->connectionHandle),
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mysql_errno($this->connectionHandle)
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);
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}
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if ($kind === self::SIMPLE || is_bool($res)) {
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return $res;
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}
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$ret = array();
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if ($kind === self::ARRAY_OBJECT) {
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WHILE ($row = mysql_fetch_object($res)) {
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$ret[] = $row;
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}
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} elseif ($kind === self::ARRAY_NUMERIC) {
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WHILE ($row = mysql_fetch_array($res, MYSQL_NUM)) {
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$ret[] = $row;
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}
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} elseif ($kind === self::ARRAY_ASSOC) {
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WHILE ($row = mysql_fetch_array($res, MYSQL_ASSOC)) {
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$ret[] = $row;
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}
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}
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return $ret;
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}
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/**
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* Get table list of given database(s)
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*
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* Stores them in $this->tables[database]
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* When no database is given, all databases are scanned for tables.
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* Returns table list for selected or for all databases.
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*
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* @param string|array $database
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*
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* @return array
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*/
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public function getTables($database = false)
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{
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if (false === $this->connectionHandle) $this->dbConnect();
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if (!isset($this->tables)) $this->tables = array();
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if ($database !== false) {
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//list tables of selected database
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if (is_array($database)) {
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$databases = $database;
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} else {
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$databases = array();
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$databases[0] = $database;
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}
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} else {
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//list tables for all databases
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$this->getDatabases();
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$databases = $this->databases;
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}
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// get tablenames inside each database
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foreach ($databases as $db) {
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$this->tables[$db] = array();
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$sql = 'SHOW TABLES FROM `' . $db . '`';
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$res = $this->query($sql, self::ARRAY_NUMERIC);
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foreach ($res as $val) {
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$this->tables[$db][] = $val[0];
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}
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}
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return is_string($database) ? $this->tables[$database] : $this->tables;
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}
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/**
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* Gets extended table information for one or all tables
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*
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* @param string $table
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* @param string $database
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*
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* @return array
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*/
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public function getTableStatus($table = false, $database = false)
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{
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if ($database !== false && $database != $this->dbSelected) {
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$this->selectDb($database);
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} elseif (!$this->_mysqli instanceof mysqli) {
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$this->selectDb($this->dbSelected);
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}
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if (!isset($this->tableinfo)) {
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$this->tableinfo = array();
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}
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if (!isset($this->tableinfo[$this->dbSelected])) {
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$this->tableinfo[$this->dbSelected] = array();
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}
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$sql = 'SHOW TABLE STATUS';
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if ($table !== false) {
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$sql .= ' LIKE \'' . $table . '\'';
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}
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$res = $this->query($sql, self::ARRAY_ASSOC);
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if (is_array($res)) {
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foreach ($res as $r) {
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$tablename = $r['Name'];
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unset($r['Name']);
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$this->tableinfo[$this->dbSelected][$tablename] = $r;
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}
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} elseif ($res === false) {
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$this->sqlError(
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mysql_error($this->connectionHandle),
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mysql_errno($this->connectionHandle)
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);
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}
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if ($table !== false) {
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if (isset($this->tableinfo[$this->dbSelected][$table])) {
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return $this->tableinfo[$this->dbSelected][$table];
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}
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}
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return $this->tableinfo[$this->dbSelected];
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}
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/**
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* Returns the CREATE-Statement for the given table or false on error.
|
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*
|
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* @throws Exception
|
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* @param string $table
|
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* @param string $database
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*
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* @return string
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*/
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public function getTableCreate($table, $database = false)
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{
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if (false === $database) $database = $this->dbSelected;
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if ($database != $this->dbSelected) {
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if (false === $this->selectDB($database)) {
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$this->sqlError(
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mysql_error($this->connectionHandle),
|
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mysql_errno($this->connectionHandle)
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);
|
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}
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}
|
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|
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if (!is_resource($this->connectionHandle)) {
|
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$this->dbConnect($this->dbSelected);
|
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}
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$sql = 'SHOW CREATE TABLE `' . $table . '`';
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$res = $this->query($sql, self::ARRAY_ASSOC);
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if (isset($res[0]['Create Table'])) {
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return $res[0]['Create Table'];
|
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|
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} else {
|
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$this->sqlError(
|
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mysql_error($this->connectionHandle),
|
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mysql_errno($this->connectionHandle)
|
||
|
|
);
|
||
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}
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||
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}
|
||
|
|
|
||
|
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/**
|
||
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|
* Gets the full description of all columns of a table
|
||
|
|
*
|
||
|
|
* Saves it to $this->metaTables[$database][$table].
|
||
|
|
*
|
||
|
|
* @param string $table
|
||
|
|
* @param string $database
|
||
|
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* @return array
|
||
|
|
*/
|
||
|
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public function getTableColumns($table, $database = false)
|
||
|
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{
|
||
|
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if (false === $database) $database = $this->dbSelected;
|
||
|
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if ($database != $this->dbSelected) {
|
||
|
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if (false === $this->selectDB($database)) {
|
||
|
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$this->sqlError(
|
||
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mysql_error($this->connectionHandle),
|
||
|
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mysql_errno($this->connectionHandle)
|
||
|
|
);
|
||
|
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}
|
||
|
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}
|
||
|
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if (!is_resource($this->connectionHandle)) {
|
||
|
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$this->dbConnect($this->dbSelected);
|
||
|
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}
|
||
|
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$sql = 'SHOW FULL COLUMNS FROM `' . $table . '`';
|
||
|
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$res = $this->query($sql, self::ARRAY_ASSOC);
|
||
|
|
if (!isset($this->metaTables[$database])) {
|
||
|
|
$this->metaTables[$database] = array();
|
||
|
|
}
|
||
|
|
if ($res) {
|
||
|
|
$this->metaTables[$database][$table] = array();
|
||
|
|
foreach ($res as $r) {
|
||
|
|
$this->metaTables[$database][$table][$r['Field']] = $r;
|
||
|
|
}
|
||
|
|
}
|
||
|
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return $this->metaTables[$database][$table];
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Gets the number of affected rows for the last query
|
||
|
|
*
|
||
|
|
* @see inc/classes/db/MsdDbFactory#affectedRows()
|
||
|
|
*
|
||
|
|
* @return int
|
||
|
|
*/
|
||
|
|
public function getAffectedRows()
|
||
|
|
{
|
||
|
|
return mysql_affected_rows($this->connectionHandle);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Escape a value to use it in a query
|
||
|
|
*
|
||
|
|
* @see inc/classes/db/MsdDbFactory#escape($val)
|
||
|
|
* @param mixed $val The value to escape
|
||
|
|
* @return mixed
|
||
|
|
*/
|
||
|
|
public function escape($val)
|
||
|
|
{
|
||
|
|
return mysql_real_escape_string($val, $this->connectionHandle);
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* Optimize a table. Returns true on success or MySQL-Error.
|
||
|
|
*
|
||
|
|
* @param string $table Name of table
|
||
|
|
*
|
||
|
|
* @return string|bool Returned optimize message or false on error
|
||
|
|
*/
|
||
|
|
function optimizeTable($table)
|
||
|
|
{
|
||
|
|
$sql = 'OPTIMIZE TABLE `' . $this->dbSelected . '`.`' . $table . '`';
|
||
|
|
$res = $this->query($sql, MsdDbFactory::ARRAY_ASSOC);
|
||
|
|
if (isset($res[0]['Msg_text'])) {
|
||
|
|
return $res[0];
|
||
|
|
} else {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|