0,0 → 1,418 |
<?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 ) . $query; |
} |
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$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; |
} |
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if( $transaction == END_TRANSACTION && $this->in_transaction ) |
{ |
$this->in_transaction = FALSE; |
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if( !@mssql_query('COMMIT', $this->db_connect_id) ) |
{ |
@mssql_query("ROLLBACK", $this->db_connect_id); |
return false; |
} |
} |
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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', $this->db_connect_id); |
return false; |
} |
} |
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return true; |
} |
} |
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// |
// Other query methods |
// |
function sql_numrows($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($query_id); |
} |
else |
{ |
return false; |
} |
} |
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function sql_numfields($query_id = 0) |
{ |
if( !$query_id ) |
{ |
$query_id = $this->result; |
} |
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return ( $query_id ) ? @mssql_num_fields($query_id) : false; |
} |
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function sql_fieldname($offset, $query_id = 0) |
{ |
if( !$query_id ) |
{ |
$query_id = $this->result; |
} |
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return ( $query_id ) ? @mssql_field_name($query_id, $offset) : false; |
} |
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function sql_fieldtype($offset, $query_id = 0) |
{ |
if(!$query_id) |
{ |
$query_id = $this->result; |
} |
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return ( $query_id ) ? @mssql_field_type($query_id, $offset) : false; |
} |
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function sql_fetchrow($query_id = 0) |
{ |
if( !$query_id ) |
{ |
$query_id = $this->result; |
} |
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if( $query_id ) |
{ |
empty($row); |
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$row = @mssql_fetch_array($query_id); |
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while( list($key, $value) = @each($row) ) |
{ |
$row[$key] = ($value === ' ') ? '' : stripslashes($value); |
} |
@reset($row); |
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return $row; |
} |
else |
{ |
return false; |
} |
} |
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function sql_fetchrowset($query_id = 0) |
{ |
if( !$query_id ) |
{ |
$query_id = $this->result; |
} |
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if( $query_id ) |
{ |
$i = 0; |
empty($rowset); |
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while( $row = @mssql_fetch_array($query_id)) |
{ |
while( list($key, $value) = @each($row) ) |
{ |
$rowset[$i][$key] = ($value === ' ') ? '' : stripslashes($value); |
} |
$i++; |
} |
@reset($rowset); |
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return $rowset; |
} |
else |
{ |
return false; |
} |
} |
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function sql_fetchfield($field, $row = -1, $query_id) |
{ |
if( !$query_id ) |
{ |
$query_id = $this->result; |
} |
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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]); |
} |
} |
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return $result; |
} |
else |
{ |
return false; |
} |
} |
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function sql_rowseek($rownum, $query_id = 0) |
{ |
if( !$query_id ) |
{ |
$query_id = $this->result; |
} |
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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; |
} |
} |
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function sql_nextid() |
{ |
return ( $this->next_id[$this->db_connect_id] ) ? $this->next_id[$this->db_connect_id] : false; |
} |
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function sql_affectedrows() |
{ |
return ( $this->affected_rows[$this->db_connect_id] ) ? $this->affected_rows[$this->db_connect_id] : false; |
} |
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function sql_freeresult($query_id = 0) |
{ |
if( !$query_id ) |
{ |
$query_id = $this->result; |
} |
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return ( $query_id ) ? @mssql_free_result($query_id) : false; |
} |
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function sql_error($query_id = 0) |
{ |
$result['message'] = @mssql_get_last_message(); |
return $result; |
} |
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} // class sql_db |
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} // if ... define |
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?> |