mirror of
https://gitlab.com/harald.mueller/aktuelle.kurse.git
synced 2024-10-19 18:05:02 +02:00
848 lines
26 KiB
PHP
848 lines
26 KiB
PHP
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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) {
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if (!@mysql_data_seek($result, $rownum)) {
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return null;
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}
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}
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if ($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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}
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if (!$arr) {
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$errno = @mysql_errno($this->connection);
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if (!$errno) {
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return NULL;
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}
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return $this->mysqlRaiseError($errno);
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}
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return DB_OK;
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}
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// }}}
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// {{{ freeResult()
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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 $result is invalid
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||
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*/
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function freeResult($result)
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{
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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; // $result is a prepared query handle
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||
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if (!isset($this->prepare_tokens[$result])) {
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return false;
|
||
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}
|
||
|
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|
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// [ssb]: WTF? unset($this->prepare_types[$result]) makes PHP
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// crash on my laptop (4.1.2 as well as 4.3.0-dev)
|
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|
|
|
||
|
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$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[$result]);
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$this->prepare_tokens = $copy;
|
||
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// unset($this->prepare_tokens[$result]);
|
||
|
|
|
||
|
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return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ numCols()
|
||
|
|
|
||
|
|
/**
|
||
|
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* Get the number of columns in a result set.
|
||
|
|
*
|
||
|
|
* @param $result MySQL result identifier
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @return int the number of columns per row in $result
|
||
|
|
*/
|
||
|
|
function numCols($result)
|
||
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|
{
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||
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$cols = @mysql_num_fields($result);
|
||
|
|
|
||
|
|
if (!$cols) {
|
||
|
|
return $this->mysqlRaiseError();
|
||
|
|
}
|
||
|
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|
||
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return $cols;
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||
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|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ numRows()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the number of rows in a result set.
|
||
|
|
*
|
||
|
|
* @param $result MySQL result identifier
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @return int the number of rows in $result
|
||
|
|
*/
|
||
|
|
function numRows($result)
|
||
|
|
{
|
||
|
|
$rows = @mysql_num_rows($result);
|
||
|
|
if ($rows === null) {
|
||
|
|
return $this->mysqlRaiseError();
|
||
|
|
}
|
||
|
|
return $rows;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ autoCommit()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Enable/disable automatic commits
|
||
|
|
*/
|
||
|
|
function autoCommit($onoff = false)
|
||
|
|
{
|
||
|
|
// XXX if $this->transaction_opcount > 0, we should probably
|
||
|
|
// issue a warning here.
|
||
|
|
$this->autocommit = $onoff ? true : false;
|
||
|
|
return DB_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ commit()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Commit the current transaction.
|
||
|
|
*/
|
||
|
|
function commit()
|
||
|
|
{
|
||
|
|
if ($this->transaction_opcount > 0) {
|
||
|
|
if (!@mysql_select_db($this->_db, $this->connection)) {
|
||
|
|
return $this->mysqlRaiseError(DB_ERROR_NODBSELECTED);
|
||
|
|
}
|
||
|
|
$result = @mysql_query('COMMIT', $this->connection);
|
||
|
|
$result = @mysql_query('SET AUTOCOMMIT=1', $this->connection);
|
||
|
|
$this->transaction_opcount = 0;
|
||
|
|
if (!$result) {
|
||
|
|
return $this->mysqlRaiseError();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return DB_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ rollback()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Roll back (undo) the current transaction.
|
||
|
|
*/
|
||
|
|
function rollback()
|
||
|
|
{
|
||
|
|
if ($this->transaction_opcount > 0) {
|
||
|
|
if (!@mysql_select_db($this->_db, $this->connection)) {
|
||
|
|
return $this->mysqlRaiseError(DB_ERROR_NODBSELECTED);
|
||
|
|
}
|
||
|
|
$result = @mysql_query('ROLLBACK', $this->connection);
|
||
|
|
$result = @mysql_query('SET AUTOCOMMIT=1', $this->connection);
|
||
|
|
$this->transaction_opcount = 0;
|
||
|
|
if (!$result) {
|
||
|
|
return $this->mysqlRaiseError();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return DB_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ affectedRows()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Gets the number of rows affected by the data manipulation
|
||
|
|
* query. For other queries, this function returns 0.
|
||
|
|
*
|
||
|
|
* @return number of rows affected by the last query
|
||
|
|
*/
|
||
|
|
|
||
|
|
function affectedRows()
|
||
|
|
{
|
||
|
|
if (DB::isManip($this->last_query)) {
|
||
|
|
$result = @mysql_affected_rows($this->connection);
|
||
|
|
} else {
|
||
|
|
$result = 0;
|
||
|
|
}
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ errorNative()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the native error code of the last error (if any) that
|
||
|
|
* occured on the current connection.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @return int native MySQL error code
|
||
|
|
*/
|
||
|
|
|
||
|
|
function errorNative()
|
||
|
|
{
|
||
|
|
return mysql_errno($this->connection);
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ nextId()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the next value in a sequence. We emulate sequences
|
||
|
|
* for MySQL. Will create the sequence if it does not exist.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @param string $seq_name the name of the sequence
|
||
|
|
*
|
||
|
|
* @param bool $ondemand whether to create the sequence table on demand
|
||
|
|
* (default is true)
|
||
|
|
*
|
||
|
|
* @return mixed a sequence integer, or a DB error
|
||
|
|
*/
|
||
|
|
function nextId($seq_name, $ondemand = true)
|
||
|
|
{
|
||
|
|
$seqname = $this->getSequenceName($seq_name);
|
||
|
|
do {
|
||
|
|
$repeat = 0;
|
||
|
|
$this->pushErrorHandling(PEAR_ERROR_RETURN);
|
||
|
|
$result = $this->query("UPDATE ${seqname} ".
|
||
|
|
'SET id=LAST_INSERT_ID(id+1)');
|
||
|
|
$this->popErrorHandling();
|
||
|
|
if ($result == DB_OK) {
|
||
|
|
/** COMMON CASE **/
|
||
|
|
$id = mysql_insert_id($this->connection);
|
||
|
|
if ($id != 0) {
|
||
|
|
return $id;
|
||
|
|
}
|
||
|
|
/** EMPTY SEQ TABLE **/
|
||
|
|
// Sequence table must be empty for some reason, so fill it and return 1
|
||
|
|
// Obtain a user-level lock
|
||
|
|
$result = $this->getOne("SELECT GET_LOCK('${seqname}_lock',10)");
|
||
|
|
if (DB::isError($result)) {
|
||
|
|
return $this->raiseError($result);
|
||
|
|
}
|
||
|
|
if ($result == 0) {
|
||
|
|
// Failed to get the lock, bail with a DB_ERROR_NOT_LOCKED error
|
||
|
|
return $this->mysqlRaiseError(DB_ERROR_NOT_LOCKED);
|
||
|
|
}
|
||
|
|
|
||
|
|
// add the default value
|
||
|
|
$result = $this->query("REPLACE INTO ${seqname} VALUES (0)");
|
||
|
|
if (DB::isError($result)) {
|
||
|
|
return $this->raiseError($result);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Release the lock
|
||
|
|
$result = $this->getOne("SELECT RELEASE_LOCK('${seqname}_lock')");
|
||
|
|
if (DB::isError($result)) {
|
||
|
|
return $this->raiseError($result);
|
||
|
|
}
|
||
|
|
// We know what the result will be, so no need to try again
|
||
|
|
return 1;
|
||
|
|
|
||
|
|
/** ONDEMAND TABLE CREATION **/
|
||
|
|
} elseif ($ondemand && DB::isError($result) &&
|
||
|
|
$result->getCode() == DB_ERROR_NOSUCHTABLE)
|
||
|
|
{
|
||
|
|
$result = $this->createSequence($seq_name);
|
||
|
|
// Since createSequence initializes the ID to be 1,
|
||
|
|
// we do not need to retrieve the ID again (or we will get 2)
|
||
|
|
if (DB::isError($result)) {
|
||
|
|
return $this->raiseError($result);
|
||
|
|
} else {
|
||
|
|
// First ID of a newly created sequence is 1
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/** BACKWARDS COMPAT **/
|
||
|
|
} elseif (DB::isError($result) &&
|
||
|
|
$result->getCode() == DB_ERROR_ALREADY_EXISTS)
|
||
|
|
{
|
||
|
|
// see _BCsequence() comment
|
||
|
|
$result = $this->_BCsequence($seqname);
|
||
|
|
if (DB::isError($result)) {
|
||
|
|
return $this->raiseError($result);
|
||
|
|
}
|
||
|
|
$repeat = 1;
|
||
|
|
}
|
||
|
|
} while ($repeat);
|
||
|
|
|
||
|
|
return $this->raiseError($result);
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ createSequence()
|
||
|
|
|
||
|
|
function createSequence($seq_name)
|
||
|
|
{
|
||
|
|
$seqname = $this->getSequenceName($seq_name);
|
||
|
|
$res = $this->query("CREATE TABLE ${seqname} ".
|
||
|
|
'(id INTEGER UNSIGNED AUTO_INCREMENT NOT NULL,'.
|
||
|
|
' PRIMARY KEY(id))');
|
||
|
|
if (DB::isError($res)) {
|
||
|
|
return $res;
|
||
|
|
}
|
||
|
|
// insert yields value 1, nextId call will generate ID 2
|
||
|
|
return $this->query("INSERT INTO ${seqname} VALUES(0)");
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ dropSequence()
|
||
|
|
|
||
|
|
function dropSequence($seq_name)
|
||
|
|
{
|
||
|
|
$seqname = $this->getSequenceName($seq_name);
|
||
|
|
return $this->query("DROP TABLE ${seqname}");
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Bacwards Compatibility with old sequence emulation implementation
|
||
|
|
* (clean up the dupes)
|
||
|
|
* @param string $seqname The sequence name to clean up
|
||
|
|
* @return mixed DB_Error or true
|
||
|
|
*/
|
||
|
|
function _BCsequence($seqname)
|
||
|
|
{
|
||
|
|
// Obtain a user-level lock... this will release any previous
|
||
|
|
// application locks, but unlike LOCK TABLES, it does not abort
|
||
|
|
// the current transaction and is much less frequently used.
|
||
|
|
$result = $this->getOne("SELECT GET_LOCK('${seqname}_lock',10)");
|
||
|
|
if (DB::isError($result)) {
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
if ($result == 0) {
|
||
|
|
// Failed to get the lock, can't do the conversion, bail
|
||
|
|
// with a DB_ERROR_NOT_LOCKED error
|
||
|
|
return $this->mysqlRaiseError(DB_ERROR_NOT_LOCKED);
|
||
|
|
}
|
||
|
|
|
||
|
|
$highest_id = $this->getOne("SELECT MAX(id) FROM ${seqname}");
|
||
|
|
if (DB::isError($highest_id)) {
|
||
|
|
return $highest_id;
|
||
|
|
}
|
||
|
|
// This should kill all rows except the highest
|
||
|
|
// We should probably do something if $highest_id isn't
|
||
|
|
// numeric, but I'm at a loss as how to handle that...
|
||
|
|
$result = $this->query("DELETE FROM ${seqname} WHERE id <> $highest_id");
|
||
|
|
if (DB::isError($result)) {
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
|
||
|
|
// If another thread has been waiting for this lock,
|
||
|
|
// it will go thru the above procedure, but will have no
|
||
|
|
// real effect
|
||
|
|
$result = $this->getOne("SELECT RELEASE_LOCK('${seqname}_lock')");
|
||
|
|
if (DB::isError($result)) {
|
||
|
|
return $result;
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
// {{{ quote()
|
||
|
|
/**
|
||
|
|
* Quote the given string so it can be safely used within string delimiters
|
||
|
|
* in a query.
|
||
|
|
* @param $string mixed Data to be quoted
|
||
|
|
* @return mixed "NULL" string, quoted string or original data
|
||
|
|
*/
|
||
|
|
function quote($str = null)
|
||
|
|
{
|
||
|
|
switch (strtolower(gettype($str))) {
|
||
|
|
case 'null':
|
||
|
|
return 'NULL';
|
||
|
|
case 'integer':
|
||
|
|
return $str;
|
||
|
|
case 'string':
|
||
|
|
default:
|
||
|
|
return "'".mysql_escape_string($str)."'";
|
||
|
|
}
|
||
|
|
}
|
||
|
|
// }}}
|
||
|
|
// {{{ modifyQuery()
|
||
|
|
|
||
|
|
function modifyQuery($query, $subject = null)
|
||
|
|
{
|
||
|
|
if ($this->options['optimize'] == 'portability') {
|
||
|
|
// "DELETE FROM table" gives 0 affected rows in MySQL.
|
||
|
|
// This little hack lets you know how many rows were deleted.
|
||
|
|
if (preg_match('/^\s*DELETE\s+FROM\s+(\S+)\s*$/i', $query)) {
|
||
|
|
$query = preg_replace('/^\s*DELETE\s+FROM\s+(\S+)\s*$/',
|
||
|
|
'DELETE FROM \1 WHERE 1=1', $query);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $query;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ modifyLimitQuery()
|
||
|
|
|
||
|
|
function modifyLimitQuery($query, $from, $count)
|
||
|
|
{
|
||
|
|
$query = $query . " LIMIT $from, $count";
|
||
|
|
return $query;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ mysqlRaiseError()
|
||
|
|
|
||
|
|
function mysqlRaiseError($errno = null)
|
||
|
|
{
|
||
|
|
if ($errno === null) {
|
||
|
|
$errno = $this->errorCode(mysql_errno($this->connection));
|
||
|
|
}
|
||
|
|
return $this->raiseError($errno, null, null, null,
|
||
|
|
@mysql_errno($this->connection) . " ** " .
|
||
|
|
@mysql_error($this->connection));
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ tableInfo()
|
||
|
|
|
||
|
|
function tableInfo($result, $mode = null) {
|
||
|
|
$count = 0;
|
||
|
|
$id = 0;
|
||
|
|
$res = array();
|
||
|
|
|
||
|
|
/*
|
||
|
|
* depending on $mode, metadata returns the following values:
|
||
|
|
*
|
||
|
|
* - mode is false (default):
|
||
|
|
* $result[]:
|
||
|
|
* [0]["table"] table name
|
||
|
|
* [0]["name"] field name
|
||
|
|
* [0]["type"] field type
|
||
|
|
* [0]["len"] field length
|
||
|
|
* [0]["flags"] field flags
|
||
|
|
*
|
||
|
|
* - mode is DB_TABLEINFO_ORDER
|
||
|
|
* $result[]:
|
||
|
|
* ["num_fields"] number of metadata records
|
||
|
|
* [0]["table"] table name
|
||
|
|
* [0]["name"] field name
|
||
|
|
* [0]["type"] field type
|
||
|
|
* [0]["len"] field length
|
||
|
|
* [0]["flags"] field flags
|
||
|
|
* ["order"][field name] index of field named "field name"
|
||
|
|
* The last one is used, if you have a field name, but no index.
|
||
|
|
* Test: if (isset($result['meta']['myfield'])) { ...
|
||
|
|
*
|
||
|
|
* - mode is DB_TABLEINFO_ORDERTABLE
|
||
|
|
* the same as above. but additionally
|
||
|
|
* ["ordertable"][table name][field name] index of field
|
||
|
|
* named "field name"
|
||
|
|
*
|
||
|
|
* this is, because if you have fields from different
|
||
|
|
* tables with the same field name * they override each
|
||
|
|
* other with DB_TABLEINFO_ORDER
|
||
|
|
*
|
||
|
|
* you can combine DB_TABLEINFO_ORDER and
|
||
|
|
* DB_TABLEINFO_ORDERTABLE with DB_TABLEINFO_ORDER |
|
||
|
|
* DB_TABLEINFO_ORDERTABLE * or with DB_TABLEINFO_FULL
|
||
|
|
*/
|
||
|
|
|
||
|
|
// if $result is a string, then we want information about a
|
||
|
|
// table without a resultset
|
||
|
|
if (is_string($result)) {
|
||
|
|
$id = @mysql_list_fields($this->dsn['database'],
|
||
|
|
$result, $this->connection);
|
||
|
|
if (empty($id)) {
|
||
|
|
return $this->mysqlRaiseError();
|
||
|
|
}
|
||
|
|
} else { // else we want information about a resultset
|
||
|
|
$id = $result;
|
||
|
|
if (empty($id)) {
|
||
|
|
return $this->mysqlRaiseError();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
$count = @mysql_num_fields($id);
|
||
|
|
|
||
|
|
// made this IF due to performance (one if is faster than $count if's)
|
||
|
|
if (empty($mode)) {
|
||
|
|
for ($i=0; $i<$count; $i++) {
|
||
|
|
$res[$i]['table'] = @mysql_field_table ($id, $i);
|
||
|
|
$res[$i]['name'] = @mysql_field_name ($id, $i);
|
||
|
|
$res[$i]['type'] = @mysql_field_type ($id, $i);
|
||
|
|
$res[$i]['len'] = @mysql_field_len ($id, $i);
|
||
|
|
$res[$i]['flags'] = @mysql_field_flags ($id, $i);
|
||
|
|
}
|
||
|
|
} else { // full
|
||
|
|
$res['num_fields']= $count;
|
||
|
|
|
||
|
|
for ($i=0; $i<$count; $i++) {
|
||
|
|
$res[$i]['table'] = @mysql_field_table ($id, $i);
|
||
|
|
$res[$i]['name'] = @mysql_field_name ($id, $i);
|
||
|
|
$res[$i]['type'] = @mysql_field_type ($id, $i);
|
||
|
|
$res[$i]['len'] = @mysql_field_len ($id, $i);
|
||
|
|
$res[$i]['flags'] = @mysql_field_flags ($id, $i);
|
||
|
|
if ($mode & DB_TABLEINFO_ORDER) {
|
||
|
|
$res['order'][$res[$i]['name']] = $i;
|
||
|
|
}
|
||
|
|
if ($mode & DB_TABLEINFO_ORDERTABLE) {
|
||
|
|
$res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// free the result only if we were called on a table
|
||
|
|
if (is_string($result)) {
|
||
|
|
@mysql_free_result($id);
|
||
|
|
}
|
||
|
|
return $res;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
// {{{ getTablesQuery()
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the query needed to get some backend info
|
||
|
|
* @param string $type What kind of info you want to retrieve
|
||
|
|
* @return string The SQL query string
|
||
|
|
*/
|
||
|
|
function getSpecialQuery($type)
|
||
|
|
{
|
||
|
|
switch ($type) {
|
||
|
|
case 'tables':
|
||
|
|
$sql = "SHOW TABLES";
|
||
|
|
break;
|
||
|
|
case 'views':
|
||
|
|
return DB_ERROR_NOT_CAPABLE;
|
||
|
|
case 'users':
|
||
|
|
$sql = "select distinct User from user";
|
||
|
|
if($this->dsn['database'] != 'mysql') {
|
||
|
|
$dsn = $this->dsn;
|
||
|
|
$dsn['database'] = 'mysql';
|
||
|
|
if (DB::isError($db = DB::connect($dsn))) {
|
||
|
|
return $db;
|
||
|
|
}
|
||
|
|
$sql = $db->getCol($sql);
|
||
|
|
$db->disconnect();
|
||
|
|
// XXX Fixme the mysql driver should take care of this
|
||
|
|
if (!@mysql_select_db($this->dsn['database'], $this->connection)) {
|
||
|
|
return $this->mysqlRaiseError(DB_ERROR_NODBSELECTED);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $sql;
|
||
|
|
break;
|
||
|
|
case 'databases':
|
||
|
|
$sql = "SHOW DATABASES";
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
return $sql;
|
||
|
|
}
|
||
|
|
|
||
|
|
// }}}
|
||
|
|
|
||
|
|
// TODO/wishlist:
|
||
|
|
// longReadlen
|
||
|
|
// binmode
|
||
|
|
}
|
||
|
|
|
||
|
|
?>
|