-<?php

-/**

-*

-* @package dbal

-* @version $Id$

-* @copyright (c) 2005 phpBB Group

-* @license http://opensource.org/licenses/gpl-license.php GNU Public License

-*

-*/

-

-/**

-*/

-if (!defined('IN_PHPBB'))

-{

- exit;

-}

-

-/**

-* @ignore

-*/

-if (!defined('SQL_LAYER'))

-{

-

- define('SQL_LAYER', 'mysql4');

- include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);

-

-/**

-* MySQL4 Database Abstraction Layer

-* Compatible with:

-* MySQL 4.1+

-* MySQL 5.0+

-* @package dbal

-*/

-class dbal_mysql4 extends dbal

-{

- /**

- * Connect to server

- */

- function sql_connect($sqlserver, $sqluser, $sqlpassword, $database, $port = false, $persistency = false)

- {

- $this->persistency = $persistency;

- $this->user = $sqluser;

- $this->server = $sqlserver . (($port) ? ':' . $port : '');

- $this->dbname = $database;

-

- $this->db_connect_id = ($this->persistency) ? @mysql_pconnect($this->server, $this->user, $sqlpassword) : @mysql_connect($this->server, $this->user, $sqlpassword);

-

- if ($this->db_connect_id && $this->dbname != '')

- {

- if (@mysql_select_db($this->dbname))

- {

- @mysql_query("SET NAMES 'utf8'", $this->db_connect_id);

- return $this->db_connect_id;

- }

- }

-

- return $this->sql_error('');

- }

-

- /**

- * Version information about used database

- */

- function sql_server_info()

- {

- return 'MySQL ' . @mysql_get_server_info($this->db_connect_id);

- }

-

- /**

- * SQL Transaction

- * @access private

- */

- function _sql_transaction($status = 'begin')

- {

- switch ($status)

- {

- case 'begin':

- return @mysql_query('BEGIN', $this->db_connect_id);

- break;

-

- case 'commit':

- return @mysql_query('COMMIT', $this->db_connect_id);

- break;

-

- case 'rollback':

- return @mysql_query('ROLLBACK', $this->db_connect_id);

- break;

- }

-

- return true;

- }

-

- /**

- * Base query method

- *

- * @param string $query Contains the SQL query which shall be executed

- * @param int $cache_ttl Either 0 to avoid caching or the time in seconds which the result shall be kept in cache

- * @return mixed When casted to bool the returned value returns true on success and false on failure

- *

- * @access public

- */

- function sql_query($query = '', $cache_ttl = 0)

- {

- if ($query != '')

- {

- global $cache;

-

- // EXPLAIN only in extra debug mode

- if (defined('DEBUG_EXTRA'))

- {

- $this->sql_report('start', $query);

- }

-

- $this->query_result = ($cache_ttl && method_exists($cache, 'sql_load')) ? $cache->sql_load($query) : false;

- $this->sql_add_num_queries($this->query_result);

-

- if (!$this->query_result)

- {

- if (($this->query_result = @mysql_query($query, $this->db_connect_id)) === false)

- {

- $this->sql_error($query);

- }

-

- if (defined('DEBUG_EXTRA'))

- {

- $this->sql_report('stop', $query);

- }

-

- if ($cache_ttl && method_exists($cache, 'sql_save'))

- {

- $this->open_queries[(int) $this->query_result] = $this->query_result;

- $cache->sql_save($query, $this->query_result, $cache_ttl);

- }

- else if (strpos($query, 'SELECT') === 0 && $this->query_result)

- {

- $this->open_queries[(int) $this->query_result] = $this->query_result;

- }

- }

- else if (defined('DEBUG_EXTRA'))

- {

- $this->sql_report('fromcache', $query);

- }

- }

- else

- {

- return false;

- }

-

- return ($this->query_result) ? $this->query_result : false;

- }

-

- /**

- * Build LIMIT query

- */

- function sql_query_limit($query, $total, $offset = 0, $cache_ttl = 0)

- {

- if ($query != '')

- {

- $this->query_result = false;

-

- // if $total is set to 0 we do not want to limit the number of rows

- if ($total == 0)

- {

- // Because MySQL 4.1+ no longer supports -1 in LIMIT queries we set it to the maximum value

- $total = '18446744073709551615';

- }

-

- $query .= "\n LIMIT " . ((!empty($offset)) ? $offset . ', ' . $total : $total);

-

- return $this->sql_query($query, $cache_ttl);

- }

- else

- {

- return false;

- }

- }

-

- /**

- * Return number of rows

- * Not used within core code

- */

- function sql_numrows($query_id = false)

- {

- global $cache;

-

- if (!$query_id)

- {

- $query_id = $this->query_result;

- }

-

- if (isset($cache->sql_rowset[$query_id]))

- {

- return $cache->sql_numrows($query_id);

- }

-

- return ($query_id) ? @mysql_num_rows($query_id) : false;

- }

-

- /**

- * Return number of affected rows

- */

- function sql_affectedrows()

- {

- return ($this->db_connect_id) ? @mysql_affected_rows($this->db_connect_id) : false;

- }

-

- /**

- * Fetch current row

- */

- function sql_fetchrow($query_id = false)

- {

- global $cache;

-

- if (!$query_id)

- {

- $query_id = $this->query_result;

- }

-

- if (isset($cache->sql_rowset[$query_id]))

- {

- return $cache->sql_fetchrow($query_id);

- }

-

- return ($query_id) ? @mysql_fetch_assoc($query_id) : false;

- }

-

- /**

- * Fetch field

- * if rownum is false, the current row is used, else it is pointing to the row (zero-based)

- */

- function sql_fetchfield($field, $rownum = false, $query_id = false)

- {

- global $cache;

-

- if (!$query_id)

- {

- $query_id = $this->query_result;

- }

-

- if ($query_id)

- {

- if ($rownum === false)

- {

- if (isset($cache->sql_rowset[$query_id]))

- {

- return $cache->sql_fetchfield($query_id, $field);

- }

-

- $row = $this->sql_fetchrow($query_id);

- return isset($row[$field]) ? $row[$field] : false;

- }

- else

- {

- if (isset($cache->sql_rowset[$query_id]))

- {

- $cache->sql_rowseek($rownum, $query_id);

- return $cache->sql_fetchfield($query_id, $field);

- }

-

- return @mysql_result($query_id, $rownum, $field);

- }

- }

-

- return false;

- }

-

- /**

- * Seek to given row number

- * rownum is zero-based

- */

- function sql_rowseek($rownum, $query_id = false)

- {

- global $cache;

-

- if (!$query_id)

- {

- $query_id = $this->query_result;

- }

-

- if (isset($cache->sql_rowset[$query_id]))

- {

- return $cache->sql_rowseek($rownum, $query_id);

- }

-

- return ($query_id) ? @mysql_data_seek($query_id, $rownum) : false;

- }

-

- /**

- * Get last inserted id after insert statement

- */

- function sql_nextid()

- {

- return ($this->db_connect_id) ? @mysql_insert_id($this->db_connect_id) : false;

- }

-

- /**

- * Free sql result

- */

- function sql_freeresult($query_id = false)

- {

- global $cache;

-

- if (!$query_id)

- {

- $query_id = $this->query_result;

- }

-

- if (isset($cache->sql_rowset[$query_id]))

- {

- return $cache->sql_freeresult($query_id);

- }

-

- if (isset($this->open_queries[(int) $query_id]))

- {

- unset($this->open_queries[(int) $query_id]);

- return @mysql_free_result($query_id);

- }

-

- return false;

- }

-

- /**

- * Escape string used in sql query

- */

- function sql_escape($msg)

- {

- if (!$this->db_connect_id)

- {

- return @mysql_real_escape_string($msg);

- }

-

- return @mysql_real_escape_string($msg, $this->db_connect_id);

- }

-

- /**

- * Build db-specific query data

- * @access private

- */

- function _sql_custom_build($stage, $data)

- {

- switch ($stage)

- {

- case 'FROM':

- $data = '(' . $data . ')';

- break;

- }

-

- return $data;

- }

-

- /**

- * return sql error array

- * @access private

- */

- function _sql_error()

- {

- if (!$this->db_connect_id)

- {

- return array(

- 'message' => @mysql_error(),

- 'code' => @mysql_errno()

- );

- }

-

- return array(

- 'message' => @mysql_error($this->db_connect_id),

- 'code' => @mysql_errno($this->db_connect_id)

- );

- }

-

- /**

- * Close sql connection

- * @access private

- */

- function _sql_close()

- {

- return @mysql_close($this->db_connect_id);

- }

-

- /**

- * Build db-specific report

- * @access private

- */

- function _sql_report($mode, $query = '')

- {

- switch ($mode)

- {

- case 'start':

-

- $explain_query = $query;

- if (preg_match('/UPDATE ([a-z0-9_]+).*?WHERE(.*)/s', $query, $m))

- {

- $explain_query = 'SELECT * FROM ' . $m[1] . ' WHERE ' . $m[2];

- }

- else if (preg_match('/DELETE FROM ([a-z0-9_]+).*?WHERE(.*)/s', $query, $m))

- {

- $explain_query = 'SELECT * FROM ' . $m[1] . ' WHERE ' . $m[2];

- }

-

- if (preg_match('/^SELECT/', $explain_query))

- {

- $html_table = false;

-

- if ($result = @mysql_query("EXPLAIN $explain_query", $this->db_connect_id))

- {

- while ($row = @mysql_fetch_assoc($result))

- {

- $html_table = $this->sql_report('add_select_row', $query, $html_table, $row);

- }

- }

- @mysql_free_result($result);

-

- if ($html_table)

- {

- $this->html_hold .= '</table>';

- }

- }

-

- break;

-

- case 'fromcache':

- $endtime = explode(' ', microtime());

- $endtime = $endtime[0] + $endtime[1];

-

- $result = @mysql_query($query, $this->db_connect_id);

- while ($void = @mysql_fetch_assoc($result))

- {

- // Take the time spent on parsing rows into account

- }

- @mysql_free_result($result);

-

- $splittime = explode(' ', microtime());

- $splittime = $splittime[0] + $splittime[1];

-

- $this->sql_report('record_fromcache', $query, $endtime, $splittime);

-

- break;

- }

- }

-}

-

-} // if ... define

-

-?> \ No newline at end of file