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<?php
/**
*
* @package dbal_sqlite
* @version $Id$
* @copyright (c) 2005 phpBB Group
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
*
*/
/**
* @ignore
*/
if (!defined('SQL_LAYER'))
{
define('SQL_LAYER', 'sqlite');
/**
* @package dbal_sqlite
* Sqlite Database Abstraction Layer
*/
class sql_db
{
var $db_connect_id;
var $query_result;
var $return_on_error = false;
var $transaction = false;
var $sql_report = '';
var $sql_time = 0;
var $num_queries = 0;
var $open_queries = array();
function sql_connect($sqlserver, $sqluser, $sqlpassword, $database, $port, $persistency = false)
{
$this->persistency = $persistency;
$this->user = $sqluser;
$this->server = $sqlserver . (($port) ? ':' . $port : '');
$this->dbname = $database;
$this->db_connect_id = ($this->persistency) ? @sqlite_popen($this->server, 0, $error) : @sqlite_open($this->server, 0, $error);
return ($this->db_connect_id) ? true : $error;
}
// Other base methods
function sql_close()
{
if (!$this->db_connect_id)
{
return false;
}
return @sqlite_close($this->db_connect_id);
}
function sql_return_on_error($fail = false)
{
$this->return_on_error = $fail;
}
function sql_num_queries()
{
return $this->num_queries;
}
function sql_transaction($status = 'begin')
{
switch ($status)
{
case 'begin':
$this->transaction = true;
$result = @sqlite_query('BEGIN', $this->db_connect_id);
break;
case 'commit':
$this->transaction = false;
$result = @sqlite_query('COMMIT', $this->db_connect_id);
break;
case 'rollback':
$this->transaction = false;
$result = @sqlite_query('ROLLBACK', $this->db_connect_id);
break;
default:
$result = true;
}
return $result;
}
// Base query method
function sql_query($query = '', $expire_time = 0)
{
if ($query != '')
{
global $cache;
$query = preg_replace('#FROM \((.*?)\)(,|[\n\t ]+?WHERE) #s', 'FROM \1\2 ', $query);
if (!$expire_time || !$cache->sql_load($query, $expire_time))
{
if ($expire_time)
{
$cache_result = true;
}
$this->query_result = false;
$this->num_queries++;
if (!empty($_GET['explain']))
{
global $starttime;
$curtime = explode(' ', microtime());
$curtime = $curtime[0] + $curtime[1] - $starttime;
}
if (!($this->query_result = @sqlite_query($query, $this->db_connect_id)))
{
$this->sql_error($query);
}
if (!empty($_GET['explain']))
{
$endtime = explode(' ', microtime());
$endtime = $endtime[0] + $endtime[1] - $starttime;
$this->sql_report .= "<pre>Query:\t" . htmlspecialchars(preg_replace('/[\s]*[\n\r\t]+[\n\r\s\t]*/', "\n\t", $query)) . "\n\n";
if ($this->query_result)
{
$this->sql_report .= "Time before: $curtime\nTime after: $endtime\nElapsed time: <b>" . ($endtime - $curtime) . "</b>\n</pre>";
}
else
{
$error = $this->sql_error();
$this->sql_report .= '<b>FAILED</b> - SQLite ' . $error['code'] . ': ' . htmlspecialchars($error['message']) . '<br><br><pre>';
}
$this->sql_time += $endtime - $curtime;
if (preg_match('#^SELECT#', $query))
{
$html_table = FALSE;
if ($result = @sqlite_query("EXPLAIN $query", $this->db_connect_id))
{
while ($row = @sqlite_fetch_array($result, @sqlite_ASSOC))
{
if (!$html_table && sizeof($row))
{
$html_table = TRUE;
$this->sql_report .= "<table width=100% border=1 cellpadding=2 cellspacing=1>\n";
$this->sql_report .= "<tr>\n<td><b>" . implode("</b></td>\n<td><b>", array_keys($row)) . "</b></td>\n</tr>\n";
}
$this->sql_report .= "<tr>\n<td>" . implode(" </td>\n<td>", array_values($row)) . " </td>\n</tr>\n";
}
}
if ($html_table)
{
$this->sql_report .= '</table><br>';
}
}
$this->sql_report .= "<hr>\n";
}
if (preg_match('#^SELECT#', $query))
{
$this->open_queries[] = $this->query_result;
}
}
if (!empty($cache_result))
{
$cache->sql_save($query, $this->query_result);
}
}
else
{
return false;
}
return ($this->query_result) ? $this->query_result : false;
}
function sql_query_limit($query, $total, $offset = 0, $expire_time = 0)
{
if ($query != '')
{
$this->query_result = false;
$query .= ' LIMIT ' . ((!empty($offset)) ? $total . ' OFFSET ' . $offset : $total);
return $this->sql_query($query, $expire_time);
}
else
{
return false;
}
}
// Idea for this from Ikonboard
function sql_build_array($query, $assoc_ary = false)
{
if (!is_array($assoc_ary))
{
return false;
}
$fields = array();
$values = array();
if ($query == 'INSERT')
{
foreach ($assoc_ary as $key => $var)
{
$fields[] = $key;
if (is_null($var))
{
$values[] = 'NULL';
}
elseif (is_string($var))
{
$values[] = "'" . $this->sql_escape($var) . "'";
}
else
{
$values[] = (is_bool($var)) ? intval($var) : $var;
}
}
$query = ' (' . implode(', ', $fields) . ') VALUES (' . implode(', ', $values) . ')';
}
else if ($query == 'UPDATE')
{
$values = array();
foreach ($assoc_ary as $key => $var)
{
if (is_null($var))
{
$values[] = "$key = NULL";
}
elseif (is_string($var))
{
$values[] = "$key = '" . $this->sql_escape($var) . "'";
}
else
{
$values[] = (is_bool($var)) ? "$key = " . intval($var) : "$key = $var";
}
}
$query = implode(', ', $values);
}
return $query;
}
// Other query methods
//
// NOTE :: Want to remove _ALL_ reliance on sql_numrows from core code ...
// don't want this here by a middle Milestone
function sql_numrows($query_id = false)
{
if (!$query_id)
{
$query_id = $this->query_result;
}
return ($query_id) ? @sqlite_num_rows($query_id) : false;
}
function sql_affectedrows()
{
return ($this->db_connect_id) ? @sqlite_changes($this->db_connect_id) : false;
}
function sql_fetchrow($query_id = 0)
{
global $cache;
if (!$query_id)
{
$query_id = $this->query_result;
}
if ($cache->sql_exists($query_id))
{
return $cache->sql_fetchrow($query_id);
}
return ($query_id) ? @sqlite_fetch_array($query_id, @sqlite_ASSOC) : false;
}
function sql_fetchrowset($query_id = 0)
{
if (!$query_id)
{
$query_id = $this->query_result;
}
if ($query_id)
{
unset($this->rowset[$query_id]);
unset($this->row[$query_id]);
while ($this->rowset[$query_id] = @sqlite_fetch_array($query_id, @sqlite_ASSOC))
{
$result[] = $this->rowset[$query_id];
}
return $result;
}
else
{
return false;
}
}
function sql_fetchfield($field, $rownum = -1, $query_id = 0)
{
if (!$query_id)
{
$query_id = $this->query_result;
}
if ($query_id)
{
return ($rownum > -1) ? ((@sqlite_seek($query_id, $rownum)) ? @sqlite_column($query_id, $field) : false) : @sqlite_column($query_id, $field);
}
}
function sql_rowseek($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 = false)
{
return true;
}
function sql_escape($msg)
{
return @sqlite_escape_string(stripslashes($msg));
}
function sql_error($sql = '')
{
if (!$this->return_on_error)
{
$this_page = (!empty($_SERVER['PHP_SELF'])) ? $_SERVER['PHP_SELF'] : $_ENV['PHP_SELF'];
$this_page .= '&' . ((!empty($_SERVER['QUERY_STRING'])) ? $_SERVER['QUERY_STRING'] : $_ENV['QUERY_STRING']);
$message = '<u>SQL ERROR</u> [ ' . SQL_LAYER . ' ]<br /><br />' . @sqlite_error_string(@sqlite_last_error($this->db_connect_id)) . '<br /><br /><u>CALLING PAGE</u><br /><br />' . htmlspecialchars($this_page) . (($sql != '') ? '<br /><br /><u>SQL</u><br /><br />' . $sql : '') . '<br />';
if ($this->transaction)
{
$this->sql_transaction('rollback');
}
trigger_error($message, E_USER_ERROR);
}
$result = array(
'message' => @sqlite_error_string(@sqlite_last_error($this->db_connect_id)),
'code' => @sqlite_last_error($this->db_connect_id)
);
return $result;
}
} // class sql_db
} // if ... define
?>
|
