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<?php
/**
* Class to handle the global settings
*
* b2evolution - {@link http://b2evolution.net/}
* Released under GNU GPL License - {@link http://b2evolution.net/about/license.html}
* @copyright (c)2003-2005 by Francois PLANQUE - {@link http://fplanque.net/}
*
* @package evocore
* @author blueyed
*/
if( !defined('DB_USER') ) die( 'Please, do not access this page directly.' );
/**
* Class to handle the global settings
*
* @package evocore
*/
class Settings
{
/**
* Constructor
*
* loads settings, checks db_version
*/
function Settings()
{ // constructor
global $new_db_version, $DB, $tablesettings;
$result = $DB->get_results( "SELECT * FROM $tablesettings" );
if( $DB->get_col_info('name', 0) == 'set_name' )
{ // read new format only
foreach( $result as $loop_row )
{
$this->{$loop_row->set_name}->value = $loop_row->set_value;
$this->{$loop_row->set_name}->dbstatus = 'uptodate';
$this->{$loop_row->set_name}->dbescape = false;
}
}
else
{ // Get old version number in order to display it in error message:
$this->db_version->value = $DB->get_var( "SELECT db_version FROM $tablesettings" );
// This is a very incomplete load, but we'll die right below anyway.
}
if( $new_db_version != $this->db_version->value )
{ // Database is not up to date:
$error_message = 'Database schema is not up to date. You have schema version '.$this->db_version->value.', but we would need '.$new_db_version.'.';
require dirname(__FILE__).'/_conf_error.page.php'; // error & exit
}
}
/**
* get a setting from the DB settings table
* @param string name of setting
*/
function get( $setting )
{
// echo 'get: '.$setting.'<br />';
if( isset($this->$setting) )
{
return $this->$setting->value;
}
else
{
debug_log("Setting '$setting' not defined.");
return false;
}
}
/**
* temporarily sets a setting (updateDB(-) writes it to DB)
*
* @param string name of setting
* @param mixed new value
* @param boolean should the value be escaped in DB?
*/
function set( $setting, $value, $escape = true )
{
// echo 'set '.$setting;
if( isset($this->$setting->value) )
{
if( $this->$setting->value == $value )
{ // already set
return false;
}
if( $this->$setting->dbstatus == 'uptodate' )
{
$this->$setting->dbstatus = 'update';
}
else
{
$this->$setting->dbstatus = 'insert';
}
}
else
{
$this->$setting->dbstatus = 'insert';
}
$this->$setting->value = $value;
$this->$setting->dbescape = $escape;
// echo ' to '.$value.' <br />';
return true;
}
/**
* commits changed settings to DB
*/
function updateDB()
{
global $tablesettings, $DB;
$queries_update = array();
$query_insert = array();
foreach( $this as $key => $setting )
{
if( $setting->dbstatus != 'uptodate' )
{
// NOTE: we could split this to use UPDATE for dbstatus=='update'. Dunno what's better for performance.
$query_insert[] = "('$key', '"
.( $setting->dbescape ? $DB->escape($setting->value) : $setting->value )
."')";
}
}
$q = false;
if( count($query_insert) )
{
$query = "REPLACE INTO $tablesettings (set_name, set_value) VALUES ".implode(', ', $query_insert);
$q = $DB->query( $query );
}
return $q;
}
}
?>
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