phpbb的sqlite函数
[code]<?php
/***************************************************************************
* sqlite.php
* -------------------
* begin : Saturday, Feb 13, 2001
* copyright : (C) 2001 The phpBB Group
* email : [email]support@phpbb.com[/email]
*
* $Id: sqlite.php,v 1.16 2002/03/19 01:07:36 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', 'sqlite');
class sql_db
{
var $db_connect_id;
var $query_result;
var $row = array();
var $rowset = array();
var $num_queries = 0;
//
// Constructor
//
function sql_db($sqlserver, $trash, $trash, $trash, $persistency = true)
{
$this->persistency = $persistency;
$this->server = $sqlserver;
$this->db_connect_id = ($this->persistency) ? @sqlite_popen($this->server, 0666, $sqliteerror) : @sqlite_open($this->server, 0666, $sqliteerror);
return ($this->db_connect_id) ? $this->db_connect_id : false;
}
//
// Other base methods
//
function sql_close()
{
return ($this->db_connect_id) ? @sqlite_close($this->db_connect_id) : false;
}
//
// Base query method
//
function sql_query($query = '', $transaction = FALSE)
{
// Remove any pre-existing queries
unset($this->query_result);
if($query != '')
{
$this->num_queries++;
$this->query_result = @sqlite_query($query, $this->db_connect_id);
}
if($this->query_result)
{
unset($this->row[$this->query_result]);
unset($this->rowset[$this->query_result]);
return $this->query_result;
}
else
{
return ( $transaction == END_TRANSACTION ) ? true : false;
}
}
//
// Other query methods
//
function sql_numrows($query_id = 0)
{
if(!$query_id)
{
$query_id = $this->query_result;
}
if($query_id)
{
return @sqlite_num_rows($query_id);
}
else
{
return false;
}
}
function sql_affectedrows()
{
return ($this->db_connect_id) ? @sqlite_changes($this->db_connect_id) : false;
}
function sql_numfields($query_id = 0)
{
if(!$query_id)
{
$query_id = $this->query_result;
}
return ($query_id) ? @sqlite_num_fields($query_id) : false;
}
function sql_fieldname($offset, $query_id = 0)
{
if(!$query_id)
{
$query_id = $this->query_result;
}
return ($query_id) ? @sqlite_field_name($query_id, $offset) : false;
}
function sql_fieldtype($offset, $query_id = 0)
{
exit('sql_fieldtype called');
if(!$query_id)
{
$query_id = $this->query_result;
}
// return ($query_id) ? @mysql_field_type($query_id, $offset) : false;
return ($query_id) ? 'varchar' : false;
}
function sql_fetchrow($query_id = 0)
{
if(!$query_id)
{
$query_id = $this->query_result;
}
if($query_id)
{
//$this->row[$query_id] = @sqlite_fetch_array($query_id);
//return $this->row[$query_id];
$result = sqlite_fetch_array($query_id);
if ($result)
{
foreach ($result as $key => $value)
{
if ($pos = strpos($key, '.'))
{
$key = substr($key, $pos+1);
}
$array[$key] = $value;
}
}
$this->row[$query_id] = $array;
return $this->row[$query_id];
}
else
{
return false;
}
}
function sql_fetchrowset($query_id = 0)
{
if(!$query_id)
{
$query_id = $this->query_result;
}
if($query_id)
{
unset(
$this->rowset[$query_id],
$this->row[$query_id]
);
while($this->rowset[$query_id] = @sqlite_fetch_array($query_id))
{
foreach ($this->rowset[$query_id] as $key => $value)
{
if ($pos = strpos($key, '.'))
{
$key = substr($key, $pos+1);
}
$array[$key] = $value;
}
$result[] = $array;
}
return $result;
}
else
{
return false;
}
}
function sql_fetchfield($field, $rownum = -1, $query_id = 0)
{
exit('sql_fetchfield called');
if( !$query_id )
{
$query_id = $this->query_result;
}
if( $query_id )
{
if( $rownum > -1 )
{
$result = mysql_result($query_id, $rownum, $field);
}
else
{
if( empty($this->row[$query_id]) && empty($this->rowset[$query_id]) )
{
if( $this->sql_fetchrow() )
{
$result = $this->row[$query_id][$field];
}
}
else
{
if( $this->rowset[$query_id] )
{
$result = $this->rowset[$query_id][$field];
}
else if( $this->row[$query_id] )
{
$result = $this->row[$query_id][$field];
}
}
}
return $result;
}
else
{
return false;
}
}
function sql_rowseek($rownum, $query_id = 0)
{
if(!$query_id)
{
$query_id = $this->query_result;
}
return ($query_id) ? @sqlite_seek($query_id, $rownum) : false;
}
function sql_nextid()
{
return ($this->db_connect_id) ? @sqlite_last_insert_rowid($this->db_connect_id) : false;
}
function sql_freeresult($query_id = 0)
{
if(!$query_id)
{
$query_id = $this->query_result;
}
if ( $query_id )
{
unset(
$this->row[$query_id],
$this->rowset[$query_id]
);
//@mysql_free_result($query_id);
return true;
}
else
{
return false;
}
}
function sql_error()
{
$result['code'] = sqlite_last_error($this->db_connect_id);
$result['message'] = sqlite_error_string($result['code']);
return $result;
}
} // class sql_db
} // if ... define
?>
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