-<?php

-/**

-*

-* @package dbal

-* @version $Id$

-* @copyright (c) 2005 phpBB Group

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

-*

-*/

-

-/**

-* @ignore

-*/

-if (!defined('IN_PHPBB'))

-{

- exit;

-}

-

-/**

-* MySQL Database Abstraction Layer

-* Compatible with:

-* MySQL 4.1+

-* MySQL 5.0+

-* @package dbal

-*/

-class phpbb_dbal_mysql extends phpbb_dbal

-{

- /**

- * @var string Database type. No distinction between versions or used extensions.

- */

- public $dbms_type = 'mysql';

-

- /**

- * @var array Database type map, column layout information

- */

- public $dbms_type_map = array(

- 'INT:' => 'int(%d)',

- 'BINT' => 'bigint(20)',

- 'UINT' => 'mediumint(8) UNSIGNED',

- 'UINT:' => 'int(%d) UNSIGNED',

- 'TINT:' => 'tinyint(%d)',

- 'USINT' => 'smallint(4) UNSIGNED',

- 'BOOL' => 'tinyint(1) UNSIGNED',

- 'VCHAR' => 'varchar(255)',

- 'VCHAR:' => 'varchar(%d)',

- 'CHAR:' => 'char(%d)',

- 'XSTEXT' => 'text',

- 'XSTEXT_UNI'=> 'varchar(100)',

- 'STEXT' => 'text',

- 'STEXT_UNI' => 'varchar(255)',

- 'TEXT' => 'text',

- 'TEXT_UNI' => 'text',

- 'MTEXT' => 'mediumtext',

- 'MTEXT_UNI' => 'mediumtext',

- 'TIMESTAMP' => 'int(11) UNSIGNED',

- 'DECIMAL' => 'decimal(5,2)',

- 'DECIMAL:' => 'decimal(%d,2)',

- 'PDECIMAL' => 'decimal(6,3)',

- 'PDECIMAL:' => 'decimal(%d,3)',

- 'VCHAR_UNI' => 'varchar(255)',

- 'VCHAR_UNI:'=> 'varchar(%d)',

- 'VARBINARY' => 'varbinary(255)',

- );

-

- /**

- * Connect to server. See {@link phpbb_dbal::sql_connect() sql_connect()} for details.

- */

- public function sql_connect($server, $user, $password, $database, $port = false, $persistency = false , $new_link = false)

- {

- $this->persistency = $persistency;

- $this->user = $user;

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

- $this->dbname = $database;

- $this->port = $port;

-

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

-

- if (!$this->db_connect_id || !$this->dbname)

- {

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

- }

-

- if (!@mysql_select_db($this->dbname, $this->db_connect_id))

- {

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

- }

-

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

-

- // enforce strict mode on databases that support it

- if (version_compare($this->sql_server_info(true), '5.0.2', '>='))

- {

- $result = @mysql_query('SELECT @@session.sql_mode AS sql_mode', $this->db_connect_id);

- $row = @mysql_fetch_assoc($result);

- @mysql_free_result($result);

-

- $modes = array_map('trim', explode(',', $row['sql_mode']));

-

- // TRADITIONAL includes STRICT_ALL_TABLES and STRICT_TRANS_TABLES

- if (!in_array('TRADITIONAL', $modes))

- {

- if (!in_array('STRICT_ALL_TABLES', $modes))

- {

- $modes[] = 'STRICT_ALL_TABLES';

- }

-

- if (!in_array('STRICT_TRANS_TABLES', $modes))

- {

- $modes[] = 'STRICT_TRANS_TABLES';

- }

- }

-

- $mode = implode(',', $modes);

- @mysql_query("SET SESSION sql_mode='{$mode}'", $this->db_connect_id);

- }

-

- return $this->db_connect_id;

- }

-

- /**

- * Version information about used database. See {@link phpbb_dbal::sql_server_info() sql_server_info()} for details.

- */

- public function sql_server_info($raw = false)

- {

- if (!phpbb::registered('acm') || ($this->sql_server_version = phpbb::$acm->get('#mysql_version')) === false)

- {

- $result = @mysql_query('SELECT VERSION() AS version', $this->db_connect_id);

- $row = @mysql_fetch_assoc($result);

- @mysql_free_result($result);

-

- $this->sql_server_version = trim($row['version']);

-

- if (phpbb::registered('acm'))

- {

- phpbb::$acm->put('#mysql_version', $this->sql_server_version);

- }

- }

-

- return ($raw) ? $this->sql_server_version : 'MySQL ' . $this->sql_server_version;

- }

-

- /**

- * DB-specific base query method. See {@link phpbb_dbal::_sql_query() _sql_query()} for details.

- */

- protected function _sql_query($query)

- {

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

- }

-

- /**

- * Build LIMIT query and run it. See {@link phpbb_dbal::_sql_query_limit() _sql_query_limit()} for details.

- */

- protected function _sql_query_limit($query, $total, $offset, $cache_ttl)

- {

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

- if ($total == 0)

- {

- // MySQL 4.1+ no longer supports -1 in limit queries

- $total = '18446744073709551615';

- }

-

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

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

- }

-

- /**

- * Close sql connection. See {@link phpbb_dbal::_sql_close() _sql_close()} for details.

- */

- protected function _sql_close()

- {

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

- }

-

- /**

- * SQL Transaction. See {@link phpbb_dbal::_sql_transaction() _sql_transaction()} for details.

- */

- protected function _sql_transaction($status)

- {

- 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;

- }

-

- /**

- * Return number of affected rows. See {@link phpbb_dbal::sql_affectedrows() sql_affectedrows()} for details.

- */

- public function sql_affectedrows()

- {

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

- }

-

- /**

- * Get last inserted id after insert statement. See {@link phpbb_dbal::sql_nextid() sql_nextid()} for details.

- */

- public function sql_nextid()

- {

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

- }

-

- /**

- * Fetch current row. See {@link phpbb_dbal::_sql_fetchrow() _sql_fetchrow()} for details.

- */

- protected function _sql_fetchrow($query_id)

- {

- return @mysql_fetch_assoc($query_id);

- }

-

- /**

- * Free query result. See {@link phpbb_dbal::_sql_freeresult() _sql_freeresult()} for details.

- */

- protected function _sql_freeresult($query_id)

- {

- return @mysql_free_result($query_id);

- }

-

- /**

- * Correctly adjust LIKE expression for special characters. See {@link phpbb_dbal::_sql_like_expression() _sql_like_expression()} for details.

- */

- protected function _sql_like_expression($expression)

- {

- return $expression;

- }

-

- /**

- * Escape string used in sql query. See {@link phpbb_dbal::sql_escape() sql_escape()} for details.

- */

- public 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);

- }

-

- /**

- * Expose a DBMS specific function. See {@link phpbb_dbal::sql_function() sql_function()} for details.

- */

- public function sql_function($type, $col)

- {

- switch ($type)

- {

- case 'length_varchar':

- case 'length_text':

- return 'LENGTH(' . $col . ')';

- break;

- }

- }

-

- /**

- * Handle data by using prepared statements. See {@link phpbb_dbal::sql_handle_data() sql_handle_data()} for details.

- public function sql_handle_data($type, $table, $data, $where = '')

- {

- }

- */

-

- /**

- * Build DB-specific query bits. See {@link phpbb_dbal::_sql_custom_build() _sql_custom_build()} for details.

- */

- protected function _sql_custom_build($stage, $data)

- {

- switch ($stage)

- {

- case 'FROM':

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

- break;

- }

-

- return $data;

- }

-

- /**

- * return sql error array. See {@link phpbb_dbal::_sql_error() _sql_error()} for details.

- */

- protected 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)

- );

- }

-

- /**

- * Run DB-specific code to build SQL Report to explain queries, show statistics and runtime information. See {@link phpbb_dbal::_sql_report() _sql_report()} for details.

- */

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

- {

- static $test_prof;

- static $test_extend;

-

- // current detection method, might just switch to see the existance of INFORMATION_SCHEMA.PROFILING

- if ($test_prof === null)

- {

- $test_prof = $test_extend = false;

- if (version_compare($this->sql_server_info(true), '5.0.37', '>=') && version_compare($this->sql_server_info(true), '5.1', '<'))

- {

- $test_prof = true;

- }

-

- if (version_compare($this->sql_server_info(true), '4.1.1', '>='))

- {

- $test_extend = true;

- }

- }

-

- 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;

-

- // begin profiling

- if ($test_prof)

- {

- @mysql_query('SET profiling = 1;', $this->db_connect_id);

- }

-

- if ($result = @mysql_query('EXPLAIN ' . (($test_extend) ? 'EXTENDED ' : '') . "$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>';

- }

-

- if ($test_extend)

- {

- $html_table = false;

-

- if ($result = @mysql_query('SHOW WARNINGS', $this->db_connect_id))

- {

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

- 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>';

- }

- }

-

- if ($test_prof)

- {

- $html_table = false;

-

- // get the last profile

- if ($result = @mysql_query('SHOW PROFILE ALL;', $this->db_connect_id))

- {

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

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

- {

- // make <unknown> HTML safe

- if (!empty($row['Source_function']))

- {

- $row['Source_function'] = str_replace(array('<', '>'), array('&lt;', '&gt;'), $row['Source_function']);

- }

-

- // remove unsupported features

- foreach ($row as $key => $val)

- {

- if ($val === null)

- {

- unset($row[$key]);

- }

- }

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

- }

- }

- @mysql_free_result($result);

-

- if ($html_table)

- {

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

- }

-

- @mysql_query('SET profiling = 0;', $this->db_connect_id);

- }

- }

-

- 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;

- }

- }

-}

-

-?> \ No newline at end of file