-<?php

-/***************************************************************************

- * mssql.php

- * -------------------

- * begin : Saturday, Feb 13, 2001

- * copyright : (C) 2001 The phpBB Group

- * email : supportphpbb.com

- *

- * $Id$

- *

- ***************************************************************************/

-

-/***************************************************************************

- *

- * 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( eregi("^INSERT ", $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] = stripslashes($value);

- }

-

- 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][$key] = stripslashes($value);

- }

- $i++;

- }

-

- 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);

- $result = stripslashes($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_escape($msg)

- {

- return str_replace("'", "''", str_replace('\\', '\\\\', $msg));

- }

-

- function sql_error($query_id = 0)

- {

- $result['message'] = @mssql_get_last_message();

- return $result;

- }

-

-} // class sql_db

-

-} // if ... define

-

-?> \ No newline at end of file