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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: sybase.php,v 1.30 2002/02/28 08:27:11 sebastian Exp $ |
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// |
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// Database independent query interface definition for PHP's Sybase |
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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_sybase extends DB_common |
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{ |
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// {{{ properties |
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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 $prepare_types = array(); |
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|
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// }}} |
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// {{{ constructor |
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|
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function DB_sybase() |
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{ |
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$this->DB_common(); |
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$this->phptype = 'sybase'; |
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$this->dbsyntax = 'sybase'; |
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$this->features = array( |
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'prepare' => false, |
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'pconnect' => true, |
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'transactions' => false, |
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'limit' => 'emulate' |
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); |
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} |
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|
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// }}} |
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// {{{ connect() |
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|
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function connect($dsninfo, $persistent = false) |
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{ |
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if (!DB::assertExtension('sybase') && !DB::assertExtension('sybase_ct')) |
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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 = $dsninfo['password']; |
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|
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$dbhost = $dsninfo['hostspec'] ? $dsninfo['hostspec'] : 'localhost'; |
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$connect_function = $persistent ? 'sybase_pconnect' : 'sybase_connect'; |
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|
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if ($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, $user); |
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} elseif ($dbhost) { |
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$conn = $connect_function($dbhost); |
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} else { |
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$conn = $connect_function(); |
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} |
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|
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if (!$conn) { |
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return $this->raiseError(DB_ERROR_CONNECT_FAILED); |
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} |
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|
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if ($dsninfo['database']) { |
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if (!@sybase_select_db($dsninfo['database'], $conn)) { |
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return $this->raiseError(DB_ERROR_NODBSELECTED); |
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} |
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} |
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$this->connection = $conn; |
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return DB_OK; |
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} |
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|
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// }}} |
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// {{{ disconnect() |
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|
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function disconnect() |
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{ |
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$ret = @sybase_close($this->connection); |
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$this->connection = null; |
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return $ret; |
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} |
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|
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// }}} |
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// {{{ simpleQuery() |
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|
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function simpleQuery($query) |
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{ |
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$this->last_query = $query; |
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$query = $this->modifyQuery($query); |
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$result = @sybase_query($query, $this->connection); |
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if (!$result) { |
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return $this->raiseError(); |
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} |
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// Determine which queries that should return data, and which |
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// should return an error code only. |
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return DB::isManip($query) ? DB_OK : $result; |
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} |
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|
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// }}} |
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// {{{ nextResult() |
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|
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/** |
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* Move the internal sybase result pointer to the next available result |
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* |
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* @param a valid fbsql result resource |
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* |
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* @access public |
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* |
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* @return true if a result is available otherwise return false |
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*/ |
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function nextResult($result) |
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{ |
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return false; |
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} |
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|
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// }}} |
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// {{{ fetchRow() |
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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 $arr; |
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} |
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|
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// }}} |
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// {{{ fetchInto() |
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|
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function fetchInto($result, &$ar, $fetchmode, $rownum=null) |
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{ |
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if ($rownum !== null) { |
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if (!sybase_data_seek($result, $rownum)) { |
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return $this->raiseError(); |
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} |
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} |
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$ar = ($fetchmode & DB_FETCHMODE_ASSOC) ? @sybase_fetch_array($result) : @sybase_fetch_row($result); |
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if (!$ar) { |
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// reported not work as seems that sybase_get_last_message() |
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// always return a message here |
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//if ($errmsg = sybase_get_last_message()) { |
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// return $this->raiseError($errmsg); |
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//} else { |
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return null; |
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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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// {{{ freeResult() |
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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 @sybase_free_result($result); |
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} |
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if (!isset($this->prepare_tokens[(int)$result])) { |
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return false; |
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} |
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unset($this->prepare_tokens[(int)$result]); |
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unset($this->prepare_types[(int)$result]); |
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return true; |
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} |
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|
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// }}} |
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// {{{ numCols() |
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|
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function numCols($result) |
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{ |
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$cols = @sybase_num_fields($result); |
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if (!$cols) { |
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return $this->raiseError(); |
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} |
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return $cols; |
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} |
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|
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// }}} |
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// {{{ affectedRows() |
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|
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/** |
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* Gets the number of rows affected by the data manipulation |
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* query. For other queries, this function returns 0. |
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* |
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* @return number of rows affected by the last query |
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*/ |
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|
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function affectedRows() |
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{ |
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if (DB::isManip($this->last_query)) { |
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$result = @sybase_affected_rows($this->connection); |
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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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|
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// }}} |
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// {{{ getSpecialQuery() |
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|
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/** |
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* Returns the query needed to get some backend info |
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* @param string $type What kind of info you want to retrieve |
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* @return string The SQL query string |
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*/ |
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function getSpecialQuery($type) |
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{ |
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switch ($type) { |
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case 'tables': |
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$sql = "select name from sysobjects where type = 'U' order by name"; |
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break; |
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case 'views': |
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$sql = "select name from sysobjects where type = 'V'"; |
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break; |
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default: |
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return null; |
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} |
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return $sql; |
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} |
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|
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// }}} |
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|
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} |
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|
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/* |
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* Local variables: |
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* tab-width: 4 |
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* c-basic-offset: 4 |
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* End: |
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*/ |
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?> |
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