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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: Sterling Hughes <sterling@php.net> | |
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// +----------------------------------------------------------------------+ |
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// |
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// $Id: mssql.php,v 1.40 2002/02/28 08:27:10 sebastian Exp $ |
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// |
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// Database independent query interface definition for PHP's Microsoft SQL Server |
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// extension. |
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// |
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|
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require_once 'DB/common.php'; |
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|
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class DB_mssql extends DB_common |
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{ |
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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 $transaction_opcount = 0; |
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var $autocommit = true; |
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|
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function DB_mssql() |
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{ |
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$this->DB_common(); |
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$this->phptype = 'mssql'; |
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$this->dbsyntax = 'mssql'; |
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$this->features = array( |
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'prepare' => false, |
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'pconnect' => true, |
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'transactions' => true, |
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'limit' => 'emulate' |
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); |
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// XXX Add here error codes ie: 'S100E' => DB_ERROR_SYNTAX |
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$this->errorcode_map = array( |
| 49 |
|
| 50 |
); |
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} |
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|
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function connect($dsninfo, $persistent = false) |
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{ |
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if (!DB::assertExtension('mssql') && !DB::assertExtension('sybase') |
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&& !DB::assertExtension('sybase_ct')) |
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{ |
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return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND); |
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} |
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$this->dsn = $dsninfo; |
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$user = $dsninfo['username']; |
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$pw = $dsninfo['password']; |
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$dbhost = $dsninfo['hostspec'] ? $dsninfo['hostspec'] : 'localhost'; |
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|
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$connect_function = $persistent ? 'mssql_pconnect' : 'mssql_connect'; |
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|
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if ($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, $user); |
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} else { |
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$conn = @$connect_function($dbhost); |
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} |
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if (!$conn) { |
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return $this->raiseError(DB_ERROR_CONNECT_FAILED, null, null, |
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null, mssql_get_last_message()); |
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} |
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if ($dsninfo['database']) { |
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if (!@mssql_select_db($dsninfo['database'], $conn)) { |
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return $this->raiseError(DB_ERROR_NODBSELECTED, null, null, |
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null, mssql_get_last_message()); |
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} |
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} |
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$this->connection = $conn; |
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return DB_OK; |
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} |
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|
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function disconnect() |
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{ |
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$ret = @mssql_close($this->connection); |
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$this->connection = null; |
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return $ret; |
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} |
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|
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function simpleQuery($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 (!$this->autocommit && $ismanip) { |
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if ($this->transaction_opcount == 0) { |
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$result = @mssql_query('BEGIN TRAN', $this->connection); |
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if (!$result) { |
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return $this->mssqlRaiseError(); |
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} |
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} |
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$this->transaction_opcount++; |
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} |
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$result = @mssql_query($query, $this->connection); |
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if (!$result) { |
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return $this->mssqlRaiseError(); |
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} |
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// Determine which queries that should return data, and which |
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// should return an error code only. |
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return $ismanip ? DB_OK : $result; |
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} |
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|
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// {{{ nextResult() |
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|
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/** |
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* Move the internal mssql result pointer to the next available result |
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* |
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* @param a valid fbsql result resource |
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* |
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* @access public |
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* |
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* @return true if a result is available otherwise return false |
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*/ |
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function nextResult($result) |
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{ |
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return mssql_next_result($result); |
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} |
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|
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// }}} |
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|
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function &fetchRow($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 $arr; |
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} |
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|
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function fetchInto($result, &$ar, $fetchmode, $rownum=null) |
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{ |
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if ($rownum !== null) { |
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if (!@mssql_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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$ar = @mssql_fetch_array($result); |
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} else { |
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$ar = @mssql_fetch_row($result); |
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} |
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if (!$ar) { |
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/* This throws informative error messages, |
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don't use it for now |
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if ($msg = mssql_get_last_message()) { |
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return $this->raiseError($msg); |
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} |
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*/ |
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return null; |
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} |
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return DB_OK; |
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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 @mssql_free_result($result); |
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} |
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if (!isset($this->prepare_tokens[$result])) { |
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return false; |
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} |
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unset($this->prepare_tokens[$result]); |
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unset($this->prepare_types[$result]); |
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return true; |
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} |
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|
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function numCols($result) |
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{ |
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$cols = @mssql_num_fields($result); |
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if (!$cols) { |
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return $this->mssqlRaiseError(); |
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} |
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return $cols; |
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} |
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|
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function numRows($result) |
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{ |
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$rows = @mssql_num_rows($result); |
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if ($rows === false) { |
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return $this->mssqlRaiseError(); |
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} |
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return $rows; |
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} |
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|
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/** |
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* Enable/disable automatic commits |
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*/ |
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function autoCommit($onoff = false) |
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{ |
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// XXX if $this->transaction_opcount > 0, we should probably |
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// issue a warning here. |
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$this->autocommit = $onoff ? true : false; |
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return DB_OK; |
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} |
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|
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// }}} |
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// {{{ commit() |
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|
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/** |
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* Commit the current transaction. |
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*/ |
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function commit() |
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{ |
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if ($this->transaction_opcount > 0) { |
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$result = @mssql_query('COMMIT TRAN', $this->connection); |
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$this->transaction_opcount = 0; |
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if (!$result) { |
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return $this->mssqlRaiseError(); |
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} |
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} |
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return DB_OK; |
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} |
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|
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// }}} |
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// {{{ rollback() |
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|
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/** |
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* Roll back (undo) the current transaction. |
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*/ |
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function rollback() |
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{ |
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if ($this->transaction_opcount > 0) { |
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$result = @mssql_query('ROLLBACK TRAN', $this->connection); |
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$this->transaction_opcount = 0; |
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if (!$result) { |
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return $this->mssqlRaiseError(); |
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} |
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} |
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return DB_OK; |
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} |
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|
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// }}} |
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// {{{ affectedRows() |
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|
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/** |
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* Gets the number of rows affected by the last query. |
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* if the last query was a select, returns 0. |
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* |
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* @return number of rows affected by the last query or DB_ERROR |
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*/ |
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function affectedRows() |
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{ |
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if (DB::isManip($this->last_query)) { |
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$res = @mssql_query('select @@rowcount', $this->connection); |
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if (!$res) { |
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return $this->mssqlRaiseError(); |
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} |
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$ar = @mssql_fetch_row($res); |
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if (!$ar) { |
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$result = 0; |
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} else { |
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@mssql_free_result($res); |
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$result = $ar[0]; |
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} |
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} else { |
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$result = 0; |
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} |
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return $result; |
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} |
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// {{{ nextId() |
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|
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/** |
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* Get the next value in a sequence. We emulate sequences |
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* for MSSQL. Will create the sequence if it does not exist. |
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* |
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* @access public |
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* |
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* @param $seq_name the name of the sequence |
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* |
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* @param $ondemand whether to create the sequence table on demand |
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* (default is true) |
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* |
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* @return a sequence integer, or a DB error |
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*/ |
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function nextId($seq_name, $ondemand = true) |
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{ |
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$seqname = $this->getSequenceName($seq_name); |
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$repeat = 0; |
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do { |
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$this->pushErrorHandling(PEAR_ERROR_RETURN); |
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$result = $this->query("INSERT INTO $seqname (vapor) VALUES (0)"); |
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$this->popErrorHandling(); |
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if ($ondemand && DB::isError($result) && |
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($result->getCode() == DB_ERROR || $result->getCode() == DB_ERROR_NOSUCHTABLE)) |
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{ |
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$repeat = 1; |
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$result = $this->createSequence($seq_name); |
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if (DB::isError($result)) { |
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return $result; |
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} |
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} else { |
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$result = $this->query("SELECT @@IDENTITY FROM $seqname"); |
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$repeat = 0; |
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} |
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} while ($repeat); |
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if (DB::isError($result)) { |
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return $this->raiseError($result); |
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} |
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$result = $result->fetchRow(DB_FETCHMODE_ORDERED); |
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return $result[0]; |
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} |
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|
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// }}} |
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// {{{ createSequence() |
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|
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function createSequence($seq_name) |
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{ |
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$seqname = $this->getSequenceName($seq_name); |
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return $this->query("CREATE TABLE $seqname ". |
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'([id] [int] IDENTITY (1, 1) NOT NULL ,' . |
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'[vapor] [int] NULL)'); |
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} |
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// }}} |
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// {{{ dropSequence() |
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|
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function dropSequence($seq_name) |
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{ |
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$seqname = $this->getSequenceName($seq_name); |
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return $this->query("DROP TABLE $seqname"); |
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} |
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// }}} |
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|
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function errorCode() |
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{ |
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$this->pushErrorHandling(PEAR_ERROR_RETURN); |
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$error_code = $this->getOne('select @@ERROR as ErrorCode'); |
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$this->popErrorHandling(); |
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// XXX Debug |
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if (!isset($this->errorcode_map[$error_code])) { |
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return DB_ERROR; |
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} |
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return $error_code; |
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} |
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|
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function mssqlRaiseError($code = null) |
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{ |
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if ($code !== null) { |
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$code = $this->errorCode(); |
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if (DB::isError($code)) { |
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return $this->raiseError($code); |
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} |
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} |
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return $this->raiseError($code, null, null, null, |
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mssql_get_last_message()); |
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} |
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|
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/** |
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|
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* Returns information about a table or a result set |
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* |
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* NOTE: doesn't support table name and flags if called from a db_result |
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* |
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* @param mixed $resource SQL Server result identifier or table name |
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* @param int $mode A valid tableInfo mode (DB_TABLEINFO_ORDERTABLE or |
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* DB_TABLEINFO_ORDER) |
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* |
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* @return array An array with all the information |
| 376 |
*/ |
| 377 |
|
| 378 |
function tableInfo($result, $mode = null) |
| 379 |
{ |
| 380 |
|
| 381 |
$count = 0; |
| 382 |
$id = 0; |
| 383 |
$res = array(); |
| 384 |
|
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/* |
| 386 |
* depending on $mode, metadata returns the following values: |
| 387 |
* |
| 388 |
* - mode is false (default): |
| 389 |
* $result[]: |
| 390 |
* [0]["table"] table name |
| 391 |
* [0]["name"] field name |
| 392 |
* [0]["type"] field type |
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* [0]["len"] field length |
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* [0]["flags"] field flags |
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* |
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* - mode is DB_TABLEINFO_ORDER |
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* $result[]: |
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* ["num_fields"] number of metadata records |
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* [0]["table"] table name |
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* [0]["name"] field name |
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* [0]["type"] field type |
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* [0]["len"] field length |
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* [0]["flags"] field flags |
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* ["order"][field name] index of field named "field name" |
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* The last one is used, if you have a field name, but no index. |
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* Test: if (isset($result['meta']['myfield'])) { ... |
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* |
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* - mode is DB_TABLEINFO_ORDERTABLE |
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* the same as above. but additionally |
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* ["ordertable"][table name][field name] index of field |
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* named "field name" |
| 412 |
* |
| 413 |
* this is, because if you have fields from different |
| 414 |
* tables with the same field name * they override each |
| 415 |
* other with DB_TABLEINFO_ORDER |
| 416 |
* |
| 417 |
* you can combine DB_TABLEINFO_ORDER and |
| 418 |
* DB_TABLEINFO_ORDERTABLE with DB_TABLEINFO_ORDER | |
| 419 |
* DB_TABLEINFO_ORDERTABLE * or with DB_TABLEINFO_FULL |
| 420 |
*/ |
| 421 |
|
| 422 |
// if $result is a string, then we want information about a |
| 423 |
// table without a resultset |
| 424 |
|
| 425 |
if (is_string($result)) { |
| 426 |
$id = mssql_query("SELECT * FROM $result", $this->connection); |
| 427 |
if (empty($id)) { |
| 428 |
return $this->mssqlRaiseError(); |
| 429 |
} |
| 430 |
} else { // else we want information about a resultset |
| 431 |
$id = $result; |
| 432 |
if (empty($id)) { |
| 433 |
return $this->mssqlRaiseError(); |
| 434 |
} |
| 435 |
} |
| 436 |
|
| 437 |
$count = @mssql_num_fields($id); |
| 438 |
|
| 439 |
// made this IF due to performance (one if is faster than $count if's) |
| 440 |
if (empty($mode)) { |
| 441 |
|
| 442 |
for ($i=0; $i<$count; $i++) { |
| 443 |
$res[$i]['table'] = (is_string($result)) ? $result : ''; |
| 444 |
$res[$i]['name'] = @mssql_field_name($id, $i); |
| 445 |
$res[$i]['type'] = @mssql_field_type($id, $i); |
| 446 |
$res[$i]['len'] = @mssql_field_length($id, $i); |
| 447 |
$res[$i]['flags'] = ''; |
| 448 |
} |
| 449 |
|
| 450 |
} else { // full |
| 451 |
$res['num_fields']= $count; |
| 452 |
|
| 453 |
for ($i=0; $i<$count; $i++) { |
| 454 |
$res[$i]['table'] = (is_string($result)) ? $result : ''; |
| 455 |
$res[$i]['name'] = @mssql_field_name($id, $i); |
| 456 |
$res[$i]['type'] = @mssql_field_type($id, $i); |
| 457 |
$res[$i]['len'] = @mssql_field_length($id, $i); |
| 458 |
$res[$i]['flags'] = ''; |
| 459 |
if ($mode & DB_TABLEINFO_ORDER) { |
| 460 |
$res['order'][$res[$i]['name']] = $i; |
| 461 |
} |
| 462 |
if ($mode & DB_TABLEINFO_ORDERTABLE) { |
| 463 |
$res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i; |
| 464 |
} |
| 465 |
} |
| 466 |
} |
| 467 |
|
| 468 |
// free the result only if we were called on a table |
| 469 |
if (is_string($result)) { |
| 470 |
@mssql_free_result($id); |
| 471 |
} |
| 472 |
return $res; |
| 473 |
} |
| 474 |
|
| 475 |
// {{{ getSpecialQuery() |
| 476 |
|
| 477 |
/** |
| 478 |
* Returns the query needed to get some backend info |
| 479 |
* @param string $type What kind of info you want to retrieve |
| 480 |
* @return string The SQL query string |
| 481 |
*/ |
| 482 |
function getSpecialQuery($type) |
| 483 |
{ |
| 484 |
switch ($type) { |
| 485 |
case 'tables': |
| 486 |
$sql = "select name from sysobjects where type = 'U' order by name"; |
| 487 |
break; |
| 488 |
case 'views': |
| 489 |
$sql = "select name from sysobjects where type = 'V'"; |
| 490 |
break; |
| 491 |
default: |
| 492 |
return null; |
| 493 |
} |
| 494 |
return $sql; |
| 495 |
} |
| 496 |
|
| 497 |
// }}} |
| 498 |
|
| 499 |
} |
| 500 |
?> |
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