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<?php
/***************************************************************************
* mssql-odbc.php
* -------------------
* begin : Saturday, Feb 13, 2001
* copyright : (C) 2001 The phpBB Group
* email : support@phpbb.com
*
* $Id: mssql-odbc.php,v 1.7 2002/03/20 17:48:30 psotfx 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-odbc");
class sql_db
{
var $db_connect_id;
var $result;
var $next_id;
var $num_rows = array();
var $current_row = array();
var $field_names = array();
var $field_types = array();
var $result_rowset = array();
var $num_queries = 0;
//
// Constructor
//
function sql_db($sqlserver, $sqluser, $sqlpassword, $database, $persistency = true)
{
$this->persistency = $persistency;
$this->server = $sqlserver;
$this->user = $sqluser;
$this->password = $sqlpassword;
$this->dbname = $database;
$this->db_connect_id = ($this->persistency) ? odbc_pconnect($this->server, $this->user, $this->password) : odbc_connect($this->server, $this->user, $this->password);
return ( $this->db_connect_id ) ? $this->db_connect_id : false;
}
//
// Other base methods
//
function sql_close()
{
if($this->db_connect_id)
{
if( $this->in_transaction )
{
@odbc_commit($this->db_connect_id);
}
if( count($this->result_rowset) )
{
unset($this->result_rowset);
unset($this->field_names);
unset($this->field_types);
unset($this->num_rows);
unset($this->current_row);
}
return @odbc_close($this->db_connect_id);
}
else
{
return false;
}
}
//
// Query method
//
function sql_query($query = "", $transaction = FALSE)
{
if( $query != "" )
{
$this->num_queries++;
if( $transaction == BEGIN_TRANSACTION && !$this->in_transaction )
{
if( !odbc_autocommit($this->db_connect_id, false) )
{
return false;
}
$this->in_transaction = TRUE;
}
if( preg_match("/^SELECT(.*?)(LIMIT ([0-9]+)[, ]*([0-9]+)*)?$/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;
}
$this->result = odbc_exec($this->db_connect_id, "SELECT $query");
if( $this->result )
{
if( empty($this->field_names[$this->result]) )
{
for($i = 1; $i < odbc_num_fields($this->result) + 1; $i++)
{
$this->field_names[$this->result][] = odbc_field_name($this->result, $i);
$this->field_types[$this->result][] = odbc_field_type($this->result, $i);
}
}
$this->current_row[$this->result] = 0;
$this->result_rowset[$this->result] = array();
$row_outer = ( isset($row_offset) ) ? $row_offset + 1 : 1;
$row_outer_max = ( isset($num_rows) ) ? $row_offset + $num_rows + 1 : 1E9;
$row_inner = 0;
while( odbc_fetch_row($this->result, $row_outer) && $row_outer < $row_outer_max )
{
for($j = 0; $j < count($this->field_names[$this->result]); $j++)
{
$this->result_rowset[$this->result][$row_inner][$this->field_names[$this->result][$j]] = stripslashes(odbc_result($this->result, $j + 1));
}
$row_outer++;
$row_inner++;
}
$this->num_rows[$this->result] = count($this->result_rowset[$this->result]);
}
}
else if( eregi("^INSERT ", $query) )
{
$this->result = odbc_exec($this->db_connect_id, $query);
if( $this->result )
{
$result_id = odbc_exec($this->db_connect_id, "SELECT @@IDENTITY");
if( $result_id )
{
if( odbc_fetch_row($result_id) )
{
$this->next_id[$this->db_connect_id] = odbc_result($result_id, 1);
$this->affected_rows[$this->db_connect_id] = odbc_num_rows($this->result);
}
}
}
}
else
{
$this->result = odbc_exec($this->db_connect_id, $query);
if( $this->result )
{
$this->affected_rows[$this->db_connect_id] = odbc_num_rows($this->result);
}
}
if( !$this->result )
{
if( $this->in_transaction )
{
odbc_rollback($this->db_connect_id);
odbc_autocommit($this->db_connect_id, true);
$this->in_transaction = FALSE;
}
return false;
}
if( $transaction == END_TRANSACTION && $this->in_transaction )
{
$this->in_transaction = FALSE;
if ( !odbc_commit($this->db_connect_id) )
{
odbc_rollback($this->db_connect_id);
odbc_autocommit($this->db_connect_id, true);
return false;
}
odbc_autocommit($this->db_connect_id, true);
}
odbc_free_result($this->result);
return $this->result;
}
else
{
if( $transaction == END_TRANSACTION && $this->in_transaction )
{
$this->in_transaction = FALSE;
if ( !@odbc_commit($this->db_connect_id) )
{
odbc_rollback($this->db_connect_id);
odbc_autocommit($this->db_connect_id, true);
return false;
}
odbc_autocommit($this->db_connect_id, true);
}
return true;
}
}
//
// Other query methods
//
function sql_numrows($query_id = 0)
{
if( !$query_id )
{
$query_id = $this->result;
}
return ( $query_id ) ? $this->num_rows[$query_id] : false;
}
function sql_numfields($query_id = 0)
{
if( !$query_id )
{
$query_id = $this->result;
}
return ( $query_id ) ? count($this->field_names[$query_id]) : false;
}
function sql_fieldname($offset, $query_id = 0)
{
if( !$query_id )
{
$query_id = $this->result;
}
return ( $query_id ) ? $this->field_names[$query_id][$offset] : false;
}
function sql_fieldtype($offset, $query_id = 0)
{
if( !$query_id )
{
$query_id = $this->result;
}
return ( $query_id ) ? $this->field_types[$query_id][$offset] : false;
}
function sql_fetchrow($query_id = 0)
{
if( !$query_id )
{
$query_id = $this->result;
}
if( $query_id )
{
return ( $this->num_rows[$query_id] && $this->current_row[$query_id] < $this->num_rows[$query_id] ) ? $this->result_rowset[$query_id][$this->current_row[$query_id]++] : false;
}
else
{
return false;
}
}
function sql_fetchrowset($query_id = 0)
{
if( !$query_id )
{
$query_id = $this->result;
}
if( $query_id )
{
return ( $this->num_rows[$query_id] ) ? $this->result_rowset[$query_id] : false;
}
else
{
return false;
}
}
function sql_fetchfield($field, $row = -1, $query_id = 0)
{
if( !$query_id )
{
$query_id = $this->result;
}
if( $query_id )
{
if( $row < $this->num_rows[$query_id] )
{
$getrow = ( $row == -1 ) ? $this->current_row[$query_id] - 1 : $row;
return $this->result_rowset[$query_id][$getrow][$this->field_names[$query_id][$field]];
}
else
{
return false;
}
}
else
{
return false;
}
}
function sql_rowseek($offset, $query_id = 0)
{
if( !$query_id )
{
$query_id = $this->result;
}
if( $query_id )
{
$this->current_row[$query_id] = $offset - 1;
return true;
}
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 = $this->result;
}
unset($this->num_rows[$query_id]);
unset($this->current_row[$query_id]);
unset($this->result_rowset[$query_id]);
unset($this->field_names[$query_id]);
unset($this->field_types[$query_id]);
return true;
}
function sql_error()
{
$error['code'] = odbc_error($this->db_connect_id);
$error['message'] = odbc_errormsg($this->db_connect_id);
return $error;
}
} // class sql_db
} // if ... define
?>
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