<?php/**************************************************************************** mssql.php* -------------------* begin : Saturday, Feb 13, 2001* copyright : (C) 2001 The phpBB Group* email : supportphpbb.com** $Id: mssql.php,v 1.22.2.4 2006/03/09 19:57:37 grahamje Exp $****************************************************************************//***************************************************************************** This program is free software; you can redistribute it and/or modify* it under the terms of the GNU General Public License as published by* the Free Software Foundation; either version 2 of the License, or* (at your option) any later version.****************************************************************************/if(!defined("SQL_LAYER")){define("SQL_LAYER","mssql");class sql_db{var $db_connect_id;var $result;var $next_id;var $in_transaction = 0;var $row = array();var $rowset = array();var $limit_offset;var $query_limit_success;var $num_queries = 0;//// Constructor//function sql_db($sqlserver, $sqluser, $sqlpassword, $database, $persistency = true){$this->persistency = $persistency;$this->user = $sqluser;$this->password = $sqlpassword;$this->server = $sqlserver;$this->dbname = $database;$this->db_connect_id = ( $this->persistency ) ? @mssql_pconnect($this->server, $this->user, $this->password) : @mssql_connect($this->server, $this->user, $this->password);if( $this->db_connect_id && $this->dbname != "" ){if( !mssql_select_db($this->dbname, $this->db_connect_id) ){mssql_close($this->db_connect_id);return false;}}return $this->db_connect_id;}//// Other base methods//function sql_close(){if($this->db_connect_id){//// Commit any remaining transactions//if( $this->in_transaction ){@mssql_query("COMMIT", $this->db_connect_id);}return @mssql_close($this->db_connect_id);}else{return false;}}//// Query method//function sql_query($query = '', $transaction = FALSE){//// Remove any pre-existing queries//unset($this->result);unset($this->row);if ( $query != '' ){$this->num_queries++;if ( $transaction == BEGIN_TRANSACTION && !$this->in_transaction ){if ( !@mssql_query('BEGIN TRANSACTION', $this->db_connect_id) ){return false;}$this->in_transaction = TRUE;}//// Does query contain any LIMIT code? If so pull out relevant start and num_results// This isn't terribly easy with MSSQL, whatever you do will potentially impact// performance compared to an 'in-built' limit//// Another issue is the 'lack' of a returned true value when a query is valid but has// no result set (as with all the other DB interfaces). It seems though that it's// 'fair' to say that if a query returns a false result (ie. no resource id) then the// SQL was valid but had no result set. If the query returns nothing but the rowcount// returns something then there's a problem. This may well be a false assumption though// ... needs checking under Windows itself.//if( preg_match('#^SELECT(.*?)(LIMIT ([0-9]+)[, ]*([0-9]+)*)?$#s', $query, $limits) ){$query = $limits[1];if( !empty($limits[2]) ){$row_offset = ( $limits[4] ) ? $limits[3] : "";$num_rows = ( $limits[4] ) ? $limits[4] : $limits[3];$query = 'TOP ' . ( $row_offset + $num_rows ) . $query;}$this->result = @mssql_query("SELECT $query", $this->db_connect_id);if( $this->result ){$this->limit_offset[$this->result] = ( !empty($row_offset) ) ? $row_offset : 0;if( $row_offset > 0 ){@mssql_data_seek($this->result, $row_offset);}}}else if( preg_match('#^INSERT #i', $query) ){if( @mssql_query($query, $this->db_connect_id) ){$this->result = time() + microtime();$result_id = @mssql_query('SELECT @@IDENTITY AS id, @@ROWCOUNT as affected', $this->db_connect_id);if( $result_id ){if( $row = @mssql_fetch_array($result_id) ){$this->next_id[$this->db_connect_id] = $row['id'];$this->affected_rows[$this->db_connect_id] = $row['affected'];}}}}else{if( @mssql_query($query, $this->db_connect_id) ){$this->result = time() + microtime();$result_id = @mssql_query('SELECT @@ROWCOUNT as affected', $this->db_connect_id);if( $result_id ){if( $row = @mssql_fetch_array($result_id) ){$this->affected_rows[$this->db_connect_id] = $row['affected'];}}}}if( !$this->result ){if( $this->in_transaction ){@mssql_query('ROLLBACK', $this->db_connect_id);$this->in_transaction = FALSE;}return false;}if( $transaction == END_TRANSACTION && $this->in_transaction ){$this->in_transaction = FALSE;if( !@mssql_query('COMMIT', $this->db_connect_id) ){@mssql_query("ROLLBACK", $this->db_connect_id);return false;}}return $this->result;}else{if( $transaction == END_TRANSACTION && $this->in_transaction ){$this->in_transaction = FALSE;if( !@mssql_query('COMMIT', $this->db_connect_id) ){@mssql_query('ROLLBACK', $this->db_connect_id);return false;}}return true;}}//// Other query methods//function sql_numrows($query_id = 0){if( !$query_id ){$query_id = $this->result;}if( $query_id ){return ( !empty($this->limit_offset[$query_id]) ) ? @mssql_num_rows($query_id) - $this->limit_offset[$query_id] : @mssql_num_rows($query_id);}else{return false;}}function sql_numfields($query_id = 0){if( !$query_id ){$query_id = $this->result;}return ( $query_id ) ? @mssql_num_fields($query_id) : false;}function sql_fieldname($offset, $query_id = 0){if( !$query_id ){$query_id = $this->result;}return ( $query_id ) ? @mssql_field_name($query_id, $offset) : false;}function sql_fieldtype($offset, $query_id = 0){if(!$query_id){$query_id = $this->result;}return ( $query_id ) ? @mssql_field_type($query_id, $offset) : false;}function sql_fetchrow($query_id = 0){if( !$query_id ){$query_id = $this->result;}if( $query_id ){empty($row);$row = @mssql_fetch_array($query_id);while( list($key, $value) = @each($row) ){$row[$key] = ($value === ' ') ? '' : stripslashes($value);}@reset($row);return $row;}else{return false;}}function sql_fetchrowset($query_id = 0){if( !$query_id ){$query_id = $this->result;}if( $query_id ){$i = 0;empty($rowset);while( $row = @mssql_fetch_array($query_id)){while( list($key, $value) = @each($row) ){$rowset[$i][$key] = ($value === ' ') ? '' : stripslashes($value);}$i++;}@reset($rowset);return $rowset;}else{return false;}}function sql_fetchfield($field, $row = -1, $query_id){if( !$query_id ){$query_id = $this->result;}if( $query_id ){if( $row != -1 ){if( $this->limit_offset[$query_id] > 0 ){$result = ( !empty($this->limit_offset[$query_id]) ) ? @mssql_result($this->result, ($this->limit_offset[$query_id] + $row), $field) : false;}else{$result = @mssql_result($this->result, $row, $field);}}else{if( empty($this->row[$query_id]) ){$this->row[$query_id] = @mssql_fetch_array($query_id);$result = ($this->row[$query_id][$field] === ' ') ? '' : stripslashes($this->row[$query_id][$field]);}}return $result;}else{return false;}}function sql_rowseek($rownum, $query_id = 0){if( !$query_id ){$query_id = $this->result;}if( $query_id ){return ( !empty($this->limit_offset[$query_id]) ) ? @mssql_data_seek($query_id, ($this->limit_offset[$query_id] + $rownum)) : @mssql_data_seek($query_id, $rownum);}else{return false;}}function sql_nextid(){return ( $this->next_id[$this->db_connect_id] ) ? $this->next_id[$this->db_connect_id] : false;}function sql_affectedrows(){return ( $this->affected_rows[$this->db_connect_id] ) ? $this->affected_rows[$this->db_connect_id] : false;}function sql_freeresult($query_id = 0){if( !$query_id ){$query_id = $this->result;}return ( $query_id ) ? @mssql_free_result($query_id) : false;}function sql_error($query_id = 0){$result['message'] = @mssql_get_last_message();return $result;}} // class sql_db} // if ... define?>