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cvsjoko |
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<?php |
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// |
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// +----------------------------------------------------------------------+ |
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// | PHP Version 4 | |
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// +----------------------------------------------------------------------+ |
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// | Copyright (c) 1997-2002 The PHP Group | |
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// +----------------------------------------------------------------------+ |
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// | This source file is subject to version 2.02 of the PHP license, | |
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// | that is bundled with this package in the file LICENSE, and is | |
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// | available at through the world-wide-web at | |
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// | http://www.php.net/license/2_02.txt. | |
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// | If you did not receive a copy of the PHP license and are unable to | |
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// | obtain it through the world-wide-web, please send a note to | |
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// | license@php.net so we can mail you a copy immediately. | |
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// +----------------------------------------------------------------------+ |
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// | Author: Stig Bakken <ssb@fast.no> | |
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// +----------------------------------------------------------------------+ |
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// |
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// $Id: mysql.php,v 1.89.2.1 2002/04/09 19:04:14 ssb Exp $ |
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// |
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// Database independent query interface definition for PHP's MySQL |
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// extension. |
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// |
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// |
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// XXX legend: |
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// |
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// XXX ERRORMSG: The error message from the mysql function should |
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// be registered here. |
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// |
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require_once "DB/common.php"; |
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class DB_mysql extends DB_common |
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{ |
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// {{{ properties |
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var $connection; |
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var $phptype, $dbsyntax; |
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var $prepare_tokens = array(); |
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var $prepare_types = array(); |
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var $num_rows = array(); |
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var $transaction_opcount = 0; |
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var $autocommit = true; |
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var $fetchmode = DB_FETCHMODE_ORDERED; /* Default fetch mode */ |
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var $_db = false; |
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// }}} |
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// {{{ constructor |
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/** |
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* DB_mysql constructor. |
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* |
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* @access public |
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*/ |
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function DB_mysql() |
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{ |
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$this->DB_common(); |
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$this->phptype = 'mysql'; |
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$this->dbsyntax = 'mysql'; |
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$this->features = array( |
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'prepare' => false, |
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'pconnect' => true, |
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'transactions' => true, |
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'limit' => 'alter' |
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); |
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$this->errorcode_map = array( |
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1004 => DB_ERROR_CANNOT_CREATE, |
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1005 => DB_ERROR_CANNOT_CREATE, |
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1006 => DB_ERROR_CANNOT_CREATE, |
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1007 => DB_ERROR_ALREADY_EXISTS, |
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1008 => DB_ERROR_CANNOT_DROP, |
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1046 => DB_ERROR_NODBSELECTED, |
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1050 => DB_ERROR_ALREADY_EXISTS, |
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1051 => DB_ERROR_NOSUCHTABLE, |
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1054 => DB_ERROR_NOSUCHFIELD, |
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1062 => DB_ERROR_ALREADY_EXISTS, |
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1064 => DB_ERROR_SYNTAX, |
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1100 => DB_ERROR_NOT_LOCKED, |
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1136 => DB_ERROR_VALUE_COUNT_ON_ROW, |
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1146 => DB_ERROR_NOSUCHTABLE, |
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1048 => DB_ERROR_CONSTRAINT, |
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); |
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} |
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// }}} |
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// {{{ connect() |
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/** |
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* Connect to a database and log in as the specified user. |
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* |
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* @param $dsn the data source name (see DB::parseDSN for syntax) |
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* @param $persistent (optional) whether the connection should |
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* be persistent |
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* @access public |
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* @return int DB_OK on success, a DB error on failure |
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*/ |
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function connect($dsninfo, $persistent = false) |
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{ |
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if (!DB::assertExtension('mysql')) |
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return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND); |
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$this->dsn = $dsninfo; |
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if (isset($dsninfo['protocol']) && $dsninfo['protocol'] == 'unix') { |
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$dbhost = ':' . $dsninfo['socket']; |
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} else { |
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$dbhost = $dsninfo['hostspec'] ? $dsninfo['hostspec'] : 'localhost'; |
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if (!empty($dsninfo['port'])) { |
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$dbhost .= ':' . $dsninfo['port']; |
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} |
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} |
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$user = $dsninfo['username']; |
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$pw = $dsninfo['password']; |
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$connect_function = $persistent ? 'mysql_pconnect' : 'mysql_connect'; |
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@ini_set('track_errors', true); |
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if ($dbhost && $user && $pw) { |
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$conn = @$connect_function($dbhost, $user, $pw); |
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} elseif ($dbhost && $user) { |
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$conn = @$connect_function($dbhost, $user); |
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} elseif ($dbhost) { |
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$conn = @$connect_function($dbhost); |
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} else { |
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$conn = false; |
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} |
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@ini_restore('track_errors'); |
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if (empty($conn)) { |
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if (($err = @mysql_error()) != '') { |
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return $this->raiseError(DB_ERROR_CONNECT_FAILED, null, null, |
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null, $err); |
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} elseif (empty($php_errormsg)) { |
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return $this->raiseError(DB_ERROR_CONNECT_FAILED); |
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} else { |
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return $this->raiseError(DB_ERROR_CONNECT_FAILED, null, null, |
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null, $php_errormsg); |
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} |
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} |
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if ($dsninfo['database']) { |
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if (!@mysql_select_db($dsninfo['database'], $conn)) { |
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switch(mysql_errno($conn)) { |
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case 1049: |
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return $this->raiseError(DB_ERROR_NOSUCHDB, null, null, |
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null, mysql_error($conn)); |
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break; |
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case 1044: |
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return $this->raiseError(DB_ERROR_ACCESS_VIOLATION, null, null, |
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null, mysql_error($conn)); |
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break; |
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default: |
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return $this->raiseError(DB_ERROR, null, null, |
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null, mysql_error($conn)); |
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break; |
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} |
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} |
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// fix to allow calls to different databases in the same script |
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$this->_db = $dsninfo['database']; |
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} |
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$this->connection = $conn; |
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return DB_OK; |
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} |
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// }}} |
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// {{{ disconnect() |
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/** |
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* Log out and disconnect from the database. |
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* |
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* @access public |
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* |
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* @return bool TRUE on success, FALSE if not connected. |
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*/ |
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function disconnect() |
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{ |
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$ret = mysql_close($this->connection); |
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$this->connection = null; |
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return $ret; |
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} |
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// }}} |
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// {{{ simpleQuery() |
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/** |
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* Send a query to MySQL and return the results as a MySQL resource |
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* identifier. |
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* |
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* @param the SQL query |
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* |
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* @access public |
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* |
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* @return mixed returns a valid MySQL result for successful SELECT |
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* queries, DB_OK for other successful queries. A DB error is |
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* returned on failure. |
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*/ |
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function simpleQuery($query) |
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{ |
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$ismanip = DB::isManip($query); |
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$this->last_query = $query; |
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$query = $this->modifyQuery($query); |
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if (!@mysql_select_db($this->_db, $this->connection)) { |
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return $this->mysqlRaiseError(DB_ERROR_NODBSELECTED); |
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} |
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if (!$this->autocommit && $ismanip) { |
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if ($this->transaction_opcount == 0) { |
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$result = @mysql_query('SET AUTOCOMMIT=0', $this->connection); |
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$result = @mysql_query('BEGIN', $this->connection); |
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if (!$result) { |
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return $this->mysqlRaiseError(); |
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} |
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} |
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$this->transaction_opcount++; |
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} |
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$result = @mysql_query($query, $this->connection); |
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if (!$result) { |
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return $this->mysqlRaiseError(); |
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} |
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if (is_resource($result)) { |
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$numrows = $this->numrows($result); |
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if (is_object($numrows)) { |
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return $numrows; |
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} |
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$this->num_rows[$result] = $numrows; |
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return $result; |
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} |
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return DB_OK; |
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} |
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// }}} |
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// {{{ nextResult() |
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/** |
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* Move the internal mysql result pointer to the next available result |
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* |
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* @param a valid fbsql result resource |
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* |
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* @access public |
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* |
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* @return true if a result is available otherwise return false |
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*/ |
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function nextResult($result) |
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{ |
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return false; |
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} |
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// }}} |
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// {{{ fetchRow() |
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/** |
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* Fetch and return a row of data (it uses fetchInto for that) |
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* @param $result MySQL result identifier |
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* @param $fetchmode format of fetched row array |
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* @param $rownum the absolute row number to fetch |
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* |
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* @return array a row of data, or false on error |
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*/ |
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function fetchRow($result, $fetchmode = DB_FETCHMODE_DEFAULT, $rownum=null) |
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{ |
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if ($fetchmode == DB_FETCHMODE_DEFAULT) { |
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$fetchmode = $this->fetchmode; |
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} |
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$res = $this->fetchInto ($result, $arr, $fetchmode, $rownum); |
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if ($res !== DB_OK) { |
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return $res; |
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} |
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return $arr; |
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} |
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// }}} |
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// {{{ fetchInto() |
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/** |
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* Fetch a row and insert the data into an existing array. |
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* |
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* @param $result MySQL result identifier |
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* @param $arr (reference) array where data from the row is stored |
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* @param $fetchmode how the array data should be indexed |
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* @param $rownum the row number to fetch |
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* @access public |
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* |
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* @return int DB_OK on success, a DB error on failure |
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*/ |
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function fetchInto($result, &$arr, $fetchmode, $rownum=null) |
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{ |
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if ($rownum !== null) { |
291 |
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if (!@mysql_data_seek($result, $rownum)) { |
292 |
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return null; |
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} |
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} |
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if ($fetchmode & DB_FETCHMODE_ASSOC) { |
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$arr = @mysql_fetch_array($result, MYSQL_ASSOC); |
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} else { |
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$arr = @mysql_fetch_row($result); |
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} |
300 |
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if (!$arr) { |
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$errno = @mysql_errno($this->connection); |
302 |
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if (!$errno) { |
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return NULL; |
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} |
305 |
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return $this->mysqlRaiseError($errno); |
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} |
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return DB_OK; |
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} |
309 |
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// }}} |
311 |
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// {{{ freeResult() |
312 |
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/** |
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* Free the internal resources associated with $result. |
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* |
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* @param $result MySQL result identifier or DB statement identifier |
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* |
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* @access public |
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* |
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* @return bool TRUE on success, FALSE if $result is invalid |
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*/ |
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function freeResult($result) |
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{ |
324 |
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if (is_resource($result)) { |
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return mysql_free_result($result); |
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} |
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$result = (int)$result; // $result is a prepared query handle |
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if (!isset($this->prepare_tokens[$result])) { |
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return false; |
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} |
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// [ssb]: WTF? unset($this->prepare_types[$result]) makes PHP |
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// crash on my laptop (4.1.2 as well as 4.3.0-dev) |
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$copy = $this->prepare_types; |
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unset($copy[$result]); |
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$this->prepare_types = $copy; |
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// unset($this->prepare_types[$result]); |
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$copy = $this->prepare_tokens; |
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unset($copy[$result]); |
343 |
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$this->prepare_tokens = $copy; |
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// unset($this->prepare_tokens[$result]); |
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return true; |
347 |
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} |
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349 |
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// }}} |
350 |
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// {{{ numCols() |
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/** |
353 |
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* Get the number of columns in a result set. |
354 |
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* |
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* @param $result MySQL result identifier |
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* |
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* @access public |
358 |
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* |
359 |
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* @return int the number of columns per row in $result |
360 |
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*/ |
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function numCols($result) |
362 |
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{ |
363 |
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$cols = @mysql_num_fields($result); |
364 |
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365 |
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if (!$cols) { |
366 |
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return $this->mysqlRaiseError(); |
367 |
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} |
368 |
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369 |
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return $cols; |
370 |
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} |
371 |
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372 |
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// }}} |
373 |
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// {{{ numRows() |
374 |
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375 |
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/** |
376 |
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* Get the number of rows in a result set. |
377 |
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* |
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* @param $result MySQL result identifier |
379 |
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* |
380 |
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* @access public |
381 |
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* |
382 |
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* @return int the number of rows in $result |
383 |
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*/ |
384 |
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function numRows($result) |
385 |
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{ |
386 |
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$rows = @mysql_num_rows($result); |
387 |
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if ($rows === null) { |
388 |
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return $this->mysqlRaiseError(); |
389 |
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} |
390 |
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return $rows; |
391 |
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} |
392 |
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393 |
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// }}} |
394 |
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// {{{ autoCommit() |
395 |
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396 |
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/** |
397 |
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* Enable/disable automatic commits |
398 |
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*/ |
399 |
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function autoCommit($onoff = false) |
400 |
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{ |
401 |
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// XXX if $this->transaction_opcount > 0, we should probably |
402 |
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// issue a warning here. |
403 |
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$this->autocommit = $onoff ? true : false; |
404 |
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return DB_OK; |
405 |
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} |
406 |
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407 |
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// }}} |
408 |
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// {{{ commit() |
409 |
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410 |
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/** |
411 |
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* Commit the current transaction. |
412 |
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*/ |
413 |
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function commit() |
414 |
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{ |
415 |
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if ($this->transaction_opcount > 0) { |
416 |
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if (!@mysql_select_db($this->_db, $this->connection)) { |
417 |
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return $this->mysqlRaiseError(DB_ERROR_NODBSELECTED); |
418 |
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} |
419 |
|
|
$result = @mysql_query('COMMIT', $this->connection); |
420 |
|
|
$result = @mysql_query('SET AUTOCOMMIT=1', $this->connection); |
421 |
|
|
$this->transaction_opcount = 0; |
422 |
|
|
if (!$result) { |
423 |
|
|
return $this->mysqlRaiseError(); |
424 |
|
|
} |
425 |
|
|
} |
426 |
|
|
return DB_OK; |
427 |
|
|
} |
428 |
|
|
|
429 |
|
|
// }}} |
430 |
|
|
// {{{ rollback() |
431 |
|
|
|
432 |
|
|
/** |
433 |
|
|
* Roll back (undo) the current transaction. |
434 |
|
|
*/ |
435 |
|
|
function rollback() |
436 |
|
|
{ |
437 |
|
|
if ($this->transaction_opcount > 0) { |
438 |
|
|
if (!@mysql_select_db($this->_db, $this->connection)) { |
439 |
|
|
return $this->mysqlRaiseError(DB_ERROR_NODBSELECTED); |
440 |
|
|
} |
441 |
|
|
$result = @mysql_query('ROLLBACK', $this->connection); |
442 |
|
|
$result = @mysql_query('SET AUTOCOMMIT=1', $this->connection); |
443 |
|
|
$this->transaction_opcount = 0; |
444 |
|
|
if (!$result) { |
445 |
|
|
return $this->mysqlRaiseError(); |
446 |
|
|
} |
447 |
|
|
} |
448 |
|
|
return DB_OK; |
449 |
|
|
} |
450 |
|
|
|
451 |
|
|
// }}} |
452 |
|
|
// {{{ affectedRows() |
453 |
|
|
|
454 |
|
|
/** |
455 |
|
|
* Gets the number of rows affected by the data manipulation |
456 |
|
|
* query. For other queries, this function returns 0. |
457 |
|
|
* |
458 |
|
|
* @return number of rows affected by the last query |
459 |
|
|
*/ |
460 |
|
|
|
461 |
|
|
function affectedRows() |
462 |
|
|
{ |
463 |
|
|
if (DB::isManip($this->last_query)) { |
464 |
|
|
$result = @mysql_affected_rows($this->connection); |
465 |
|
|
} else { |
466 |
|
|
$result = 0; |
467 |
|
|
} |
468 |
|
|
return $result; |
469 |
|
|
} |
470 |
|
|
|
471 |
|
|
// }}} |
472 |
|
|
// {{{ errorNative() |
473 |
|
|
|
474 |
|
|
/** |
475 |
|
|
* Get the native error code of the last error (if any) that |
476 |
|
|
* occured on the current connection. |
477 |
|
|
* |
478 |
|
|
* @access public |
479 |
|
|
* |
480 |
|
|
* @return int native MySQL error code |
481 |
|
|
*/ |
482 |
|
|
|
483 |
|
|
function errorNative() |
484 |
|
|
{ |
485 |
|
|
return mysql_errno($this->connection); |
486 |
|
|
} |
487 |
|
|
|
488 |
|
|
// }}} |
489 |
|
|
// {{{ nextId() |
490 |
|
|
|
491 |
|
|
/** |
492 |
|
|
* Get the next value in a sequence. We emulate sequences |
493 |
|
|
* for MySQL. Will create the sequence if it does not exist. |
494 |
|
|
* |
495 |
|
|
* @access public |
496 |
|
|
* |
497 |
|
|
* @param string $seq_name the name of the sequence |
498 |
|
|
* |
499 |
|
|
* @param bool $ondemand whether to create the sequence table on demand |
500 |
|
|
* (default is true) |
501 |
|
|
* |
502 |
|
|
* @return mixed a sequence integer, or a DB error |
503 |
|
|
*/ |
504 |
|
|
function nextId($seq_name, $ondemand = true) |
505 |
|
|
{ |
506 |
|
|
$seqname = $this->getSequenceName($seq_name); |
507 |
|
|
do { |
508 |
|
|
$repeat = 0; |
509 |
|
|
$this->pushErrorHandling(PEAR_ERROR_RETURN); |
510 |
|
|
$result = $this->query("UPDATE ${seqname} ". |
511 |
|
|
'SET id=LAST_INSERT_ID(id+1)'); |
512 |
|
|
$this->popErrorHandling(); |
513 |
|
|
if ($result == DB_OK) { |
514 |
|
|
/** COMMON CASE **/ |
515 |
|
|
$id = mysql_insert_id($this->connection); |
516 |
|
|
if ($id != 0) { |
517 |
|
|
return $id; |
518 |
|
|
} |
519 |
|
|
/** EMPTY SEQ TABLE **/ |
520 |
|
|
// Sequence table must be empty for some reason, so fill it and return 1 |
521 |
|
|
// Obtain a user-level lock |
522 |
|
|
$result = $this->getOne("SELECT GET_LOCK('${seqname}_lock',10)"); |
523 |
|
|
if (DB::isError($result)) { |
524 |
|
|
return $this->raiseError($result); |
525 |
|
|
} |
526 |
|
|
if ($result == 0) { |
527 |
|
|
// Failed to get the lock, bail with a DB_ERROR_NOT_LOCKED error |
528 |
|
|
return $this->mysqlRaiseError(DB_ERROR_NOT_LOCKED); |
529 |
|
|
} |
530 |
|
|
|
531 |
|
|
// add the default value |
532 |
|
|
$result = $this->query("REPLACE INTO ${seqname} VALUES (0)"); |
533 |
|
|
if (DB::isError($result)) { |
534 |
|
|
return $this->raiseError($result); |
535 |
|
|
} |
536 |
|
|
|
537 |
|
|
// Release the lock |
538 |
|
|
$result = $this->getOne("SELECT RELEASE_LOCK('${seqname}_lock')"); |
539 |
|
|
if (DB::isError($result)) { |
540 |
|
|
return $this->raiseError($result); |
541 |
|
|
} |
542 |
|
|
// We know what the result will be, so no need to try again |
543 |
|
|
return 1; |
544 |
|
|
|
545 |
|
|
/** ONDEMAND TABLE CREATION **/ |
546 |
|
|
} elseif ($ondemand && DB::isError($result) && |
547 |
|
|
$result->getCode() == DB_ERROR_NOSUCHTABLE) |
548 |
|
|
{ |
549 |
|
|
$result = $this->createSequence($seq_name); |
550 |
|
|
// Since createSequence initializes the ID to be 1, |
551 |
|
|
// we do not need to retrieve the ID again (or we will get 2) |
552 |
|
|
if (DB::isError($result)) { |
553 |
|
|
return $this->raiseError($result); |
554 |
|
|
} else { |
555 |
|
|
// First ID of a newly created sequence is 1 |
556 |
|
|
return 1; |
557 |
|
|
} |
558 |
|
|
|
559 |
|
|
/** BACKWARDS COMPAT **/ |
560 |
|
|
} elseif (DB::isError($result) && |
561 |
|
|
$result->getCode() == DB_ERROR_ALREADY_EXISTS) |
562 |
|
|
{ |
563 |
|
|
// see _BCsequence() comment |
564 |
|
|
$result = $this->_BCsequence($seqname); |
565 |
|
|
if (DB::isError($result)) { |
566 |
|
|
return $this->raiseError($result); |
567 |
|
|
} |
568 |
|
|
$repeat = 1; |
569 |
|
|
} |
570 |
|
|
} while ($repeat); |
571 |
|
|
|
572 |
|
|
return $this->raiseError($result); |
573 |
|
|
} |
574 |
|
|
|
575 |
|
|
// }}} |
576 |
|
|
// {{{ createSequence() |
577 |
|
|
|
578 |
|
|
function createSequence($seq_name) |
579 |
|
|
{ |
580 |
|
|
$seqname = $this->getSequenceName($seq_name); |
581 |
|
|
$res = $this->query("CREATE TABLE ${seqname} ". |
582 |
|
|
'(id INTEGER UNSIGNED AUTO_INCREMENT NOT NULL,'. |
583 |
|
|
' PRIMARY KEY(id))'); |
584 |
|
|
if (DB::isError($res)) { |
585 |
|
|
return $res; |
586 |
|
|
} |
587 |
|
|
// insert yields value 1, nextId call will generate ID 2 |
588 |
|
|
return $this->query("INSERT INTO ${seqname} VALUES(0)"); |
589 |
|
|
} |
590 |
|
|
|
591 |
|
|
// }}} |
592 |
|
|
// {{{ dropSequence() |
593 |
|
|
|
594 |
|
|
function dropSequence($seq_name) |
595 |
|
|
{ |
596 |
|
|
$seqname = $this->getSequenceName($seq_name); |
597 |
|
|
return $this->query("DROP TABLE ${seqname}"); |
598 |
|
|
} |
599 |
|
|
|
600 |
|
|
// }}} |
601 |
|
|
|
602 |
|
|
/** |
603 |
|
|
* Bacwards Compatibility with old sequence emulation implementation |
604 |
|
|
* (clean up the dupes) |
605 |
|
|
* @param string $seqname The sequence name to clean up |
606 |
|
|
* @return mixed DB_Error or true |
607 |
|
|
*/ |
608 |
|
|
function _BCsequence($seqname) |
609 |
|
|
{ |
610 |
|
|
// Obtain a user-level lock... this will release any previous |
611 |
|
|
// application locks, but unlike LOCK TABLES, it does not abort |
612 |
|
|
// the current transaction and is much less frequently used. |
613 |
|
|
$result = $this->getOne("SELECT GET_LOCK('${seqname}_lock',10)"); |
614 |
|
|
if (DB::isError($result)) { |
615 |
|
|
return $result; |
616 |
|
|
} |
617 |
|
|
if ($result == 0) { |
618 |
|
|
// Failed to get the lock, can't do the conversion, bail |
619 |
|
|
// with a DB_ERROR_NOT_LOCKED error |
620 |
|
|
return $this->mysqlRaiseError(DB_ERROR_NOT_LOCKED); |
621 |
|
|
} |
622 |
|
|
|
623 |
|
|
$highest_id = $this->getOne("SELECT MAX(id) FROM ${seqname}"); |
624 |
|
|
if (DB::isError($highest_id)) { |
625 |
|
|
return $highest_id; |
626 |
|
|
} |
627 |
|
|
// This should kill all rows except the highest |
628 |
|
|
// We should probably do something if $highest_id isn't |
629 |
|
|
// numeric, but I'm at a loss as how to handle that... |
630 |
|
|
$result = $this->query("DELETE FROM ${seqname} WHERE id <> $highest_id"); |
631 |
|
|
if (DB::isError($result)) { |
632 |
|
|
return $result; |
633 |
|
|
} |
634 |
|
|
|
635 |
|
|
// If another thread has been waiting for this lock, |
636 |
|
|
// it will go thru the above procedure, but will have no |
637 |
|
|
// real effect |
638 |
|
|
$result = $this->getOne("SELECT RELEASE_LOCK('${seqname}_lock')"); |
639 |
|
|
if (DB::isError($result)) { |
640 |
|
|
return $result; |
641 |
|
|
} |
642 |
|
|
return true; |
643 |
|
|
} |
644 |
|
|
|
645 |
|
|
// {{{ quote() |
646 |
|
|
/** |
647 |
|
|
* Quote the given string so it can be safely used within string delimiters |
648 |
|
|
* in a query. |
649 |
|
|
* @param $string mixed Data to be quoted |
650 |
|
|
* @return mixed "NULL" string, quoted string or original data |
651 |
|
|
*/ |
652 |
|
|
function quote($str = null) |
653 |
|
|
{ |
654 |
|
|
switch (strtolower(gettype($str))) { |
655 |
|
|
case 'null': |
656 |
|
|
return 'NULL'; |
657 |
|
|
case 'integer': |
658 |
|
|
return $str; |
659 |
|
|
case 'string': |
660 |
|
|
default: |
661 |
|
|
return "'".mysql_escape_string($str)."'"; |
662 |
|
|
} |
663 |
|
|
} |
664 |
|
|
// }}} |
665 |
|
|
// {{{ modifyQuery() |
666 |
|
|
|
667 |
|
|
function modifyQuery($query, $subject = null) |
668 |
|
|
{ |
669 |
|
|
if ($this->options['optimize'] == 'portability') { |
670 |
|
|
// "DELETE FROM table" gives 0 affected rows in MySQL. |
671 |
|
|
// This little hack lets you know how many rows were deleted. |
672 |
|
|
if (preg_match('/^\s*DELETE\s+FROM\s+(\S+)\s*$/i', $query)) { |
673 |
|
|
$query = preg_replace('/^\s*DELETE\s+FROM\s+(\S+)\s*$/', |
674 |
|
|
'DELETE FROM \1 WHERE 1=1', $query); |
675 |
|
|
} |
676 |
|
|
} |
677 |
|
|
return $query; |
678 |
|
|
} |
679 |
|
|
|
680 |
|
|
// }}} |
681 |
|
|
// {{{ modifyLimitQuery() |
682 |
|
|
|
683 |
|
|
function modifyLimitQuery($query, $from, $count) |
684 |
|
|
{ |
685 |
|
|
$query = $query . " LIMIT $from, $count"; |
686 |
|
|
return $query; |
687 |
|
|
} |
688 |
|
|
|
689 |
|
|
// }}} |
690 |
|
|
// {{{ mysqlRaiseError() |
691 |
|
|
|
692 |
|
|
function mysqlRaiseError($errno = null) |
693 |
|
|
{ |
694 |
|
|
if ($errno === null) { |
695 |
|
|
$errno = $this->errorCode(mysql_errno($this->connection)); |
696 |
|
|
} |
697 |
|
|
return $this->raiseError($errno, null, null, null, |
698 |
|
|
@mysql_errno($this->connection) . " ** " . |
699 |
|
|
@mysql_error($this->connection)); |
700 |
|
|
} |
701 |
|
|
|
702 |
|
|
// }}} |
703 |
|
|
// {{{ tableInfo() |
704 |
|
|
|
705 |
|
|
function tableInfo($result, $mode = null) { |
706 |
|
|
$count = 0; |
707 |
|
|
$id = 0; |
708 |
|
|
$res = array(); |
709 |
|
|
|
710 |
|
|
/* |
711 |
|
|
* depending on $mode, metadata returns the following values: |
712 |
|
|
* |
713 |
|
|
* - mode is false (default): |
714 |
|
|
* $result[]: |
715 |
|
|
* [0]["table"] table name |
716 |
|
|
* [0]["name"] field name |
717 |
|
|
* [0]["type"] field type |
718 |
|
|
* [0]["len"] field length |
719 |
|
|
* [0]["flags"] field flags |
720 |
|
|
* |
721 |
|
|
* - mode is DB_TABLEINFO_ORDER |
722 |
|
|
* $result[]: |
723 |
|
|
* ["num_fields"] number of metadata records |
724 |
|
|
* [0]["table"] table name |
725 |
|
|
* [0]["name"] field name |
726 |
|
|
* [0]["type"] field type |
727 |
|
|
* [0]["len"] field length |
728 |
|
|
* [0]["flags"] field flags |
729 |
|
|
* ["order"][field name] index of field named "field name" |
730 |
|
|
* The last one is used, if you have a field name, but no index. |
731 |
|
|
* Test: if (isset($result['meta']['myfield'])) { ... |
732 |
|
|
* |
733 |
|
|
* - mode is DB_TABLEINFO_ORDERTABLE |
734 |
|
|
* the same as above. but additionally |
735 |
|
|
* ["ordertable"][table name][field name] index of field |
736 |
|
|
* named "field name" |
737 |
|
|
* |
738 |
|
|
* this is, because if you have fields from different |
739 |
|
|
* tables with the same field name * they override each |
740 |
|
|
* other with DB_TABLEINFO_ORDER |
741 |
|
|
* |
742 |
|
|
* you can combine DB_TABLEINFO_ORDER and |
743 |
|
|
* DB_TABLEINFO_ORDERTABLE with DB_TABLEINFO_ORDER | |
744 |
|
|
* DB_TABLEINFO_ORDERTABLE * or with DB_TABLEINFO_FULL |
745 |
|
|
*/ |
746 |
|
|
|
747 |
|
|
// if $result is a string, then we want information about a |
748 |
|
|
// table without a resultset |
749 |
|
|
if (is_string($result)) { |
750 |
|
|
$id = @mysql_list_fields($this->dsn['database'], |
751 |
|
|
$result, $this->connection); |
752 |
|
|
if (empty($id)) { |
753 |
|
|
return $this->mysqlRaiseError(); |
754 |
|
|
} |
755 |
|
|
} else { // else we want information about a resultset |
756 |
|
|
$id = $result; |
757 |
|
|
if (empty($id)) { |
758 |
|
|
return $this->mysqlRaiseError(); |
759 |
|
|
} |
760 |
|
|
} |
761 |
|
|
|
762 |
|
|
$count = @mysql_num_fields($id); |
763 |
|
|
|
764 |
|
|
// made this IF due to performance (one if is faster than $count if's) |
765 |
|
|
if (empty($mode)) { |
766 |
|
|
for ($i=0; $i<$count; $i++) { |
767 |
|
|
$res[$i]['table'] = @mysql_field_table ($id, $i); |
768 |
|
|
$res[$i]['name'] = @mysql_field_name ($id, $i); |
769 |
|
|
$res[$i]['type'] = @mysql_field_type ($id, $i); |
770 |
|
|
$res[$i]['len'] = @mysql_field_len ($id, $i); |
771 |
|
|
$res[$i]['flags'] = @mysql_field_flags ($id, $i); |
772 |
|
|
} |
773 |
|
|
} else { // full |
774 |
|
|
$res['num_fields']= $count; |
775 |
|
|
|
776 |
|
|
for ($i=0; $i<$count; $i++) { |
777 |
|
|
$res[$i]['table'] = @mysql_field_table ($id, $i); |
778 |
|
|
$res[$i]['name'] = @mysql_field_name ($id, $i); |
779 |
|
|
$res[$i]['type'] = @mysql_field_type ($id, $i); |
780 |
|
|
$res[$i]['len'] = @mysql_field_len ($id, $i); |
781 |
|
|
$res[$i]['flags'] = @mysql_field_flags ($id, $i); |
782 |
|
|
if ($mode & DB_TABLEINFO_ORDER) { |
783 |
|
|
$res['order'][$res[$i]['name']] = $i; |
784 |
|
|
} |
785 |
|
|
if ($mode & DB_TABLEINFO_ORDERTABLE) { |
786 |
|
|
$res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i; |
787 |
|
|
} |
788 |
|
|
} |
789 |
|
|
} |
790 |
|
|
|
791 |
|
|
// free the result only if we were called on a table |
792 |
|
|
if (is_string($result)) { |
793 |
|
|
@mysql_free_result($id); |
794 |
|
|
} |
795 |
|
|
return $res; |
796 |
|
|
} |
797 |
|
|
|
798 |
|
|
// }}} |
799 |
|
|
// {{{ getTablesQuery() |
800 |
|
|
|
801 |
|
|
/** |
802 |
|
|
* Returns the query needed to get some backend info |
803 |
|
|
* @param string $type What kind of info you want to retrieve |
804 |
|
|
* @return string The SQL query string |
805 |
|
|
*/ |
806 |
|
|
function getSpecialQuery($type) |
807 |
|
|
{ |
808 |
|
|
switch ($type) { |
809 |
|
|
case 'tables': |
810 |
|
|
$sql = "SHOW TABLES"; |
811 |
|
|
break; |
812 |
|
|
case 'views': |
813 |
|
|
return DB_ERROR_NOT_CAPABLE; |
814 |
|
|
case 'users': |
815 |
|
|
$sql = "select distinct User from user"; |
816 |
|
|
if($this->dsn['database'] != 'mysql') { |
817 |
|
|
$dsn = $this->dsn; |
818 |
|
|
$dsn['database'] = 'mysql'; |
819 |
|
|
if (DB::isError($db = DB::connect($dsn))) { |
820 |
|
|
return $db; |
821 |
|
|
} |
822 |
|
|
$sql = $db->getCol($sql); |
823 |
|
|
$db->disconnect(); |
824 |
|
|
// XXX Fixme the mysql driver should take care of this |
825 |
|
|
if (!@mysql_select_db($this->dsn['database'], $this->connection)) { |
826 |
|
|
return $this->mysqlRaiseError(DB_ERROR_NODBSELECTED); |
827 |
|
|
} |
828 |
|
|
} |
829 |
|
|
return $sql; |
830 |
|
|
break; |
831 |
|
|
case 'databases': |
832 |
|
|
$sql = "SHOW DATABASES"; |
833 |
|
|
break; |
834 |
|
|
default: |
835 |
|
|
return null; |
836 |
|
|
} |
837 |
|
|
return $sql; |
838 |
|
|
} |
839 |
|
|
|
840 |
|
|
// }}} |
841 |
|
|
|
842 |
|
|
// TODO/wishlist: |
843 |
|
|
// longReadlen |
844 |
|
|
// binmode |
845 |
|
|
} |
846 |
|
|
|
847 |
|
|
?> |