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de04304e94
[ticket/12704] Improve the load time information in the footer when enabled * rxu/ticket/12704: [ticket/12704] Improve the load time information in the footer when enabled
443 lines
9.4 KiB
PHP
443 lines
9.4 KiB
PHP
<?php
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/**
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*
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* This file is part of the phpBB Forum Software package.
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*
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* @copyright (c) phpBB Limited <https://www.phpbb.com>
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* @license GNU General Public License, version 2 (GPL-2.0)
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*
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* For full copyright and license information, please see
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* the docs/CREDITS.txt file.
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*
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*/
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/**
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* This is the MS SQL Server Native database abstraction layer.
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* PHP mssql native driver required.
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* @author Chris Pucci
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*
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*/
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namespace phpbb\db\driver;
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class mssqlnative extends \phpbb\db\driver\mssql_base
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{
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var $m_insert_id = null;
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var $last_query_text = '';
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var $query_options = array();
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var $connect_error = '';
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/**
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* {@inheritDoc}
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*/
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function sql_connect($sqlserver, $sqluser, $sqlpassword, $database, $port = false, $persistency = false, $new_link = false)
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{
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// Test for driver support, to avoid suppressed fatal error
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if (!function_exists('sqlsrv_connect'))
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{
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$this->connect_error = 'Native MS SQL Server driver for PHP is missing or needs to be updated. Version 1.1 or later is required to install phpBB3. You can download the driver from: http://www.microsoft.com/sqlserver/2005/en/us/PHP-Driver.aspx';
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return $this->sql_error('');
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}
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//set up connection variables
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$this->persistency = $persistency;
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$this->user = $sqluser;
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$this->dbname = $database;
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$port_delimiter = (defined('PHP_OS') && substr(PHP_OS, 0, 3) === 'WIN') ? ',' : ':';
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$this->server = $sqlserver . (($port) ? $port_delimiter . $port : '');
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//connect to database
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$this->db_connect_id = sqlsrv_connect($this->server, array(
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'Database' => $this->dbname,
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'UID' => $this->user,
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'PWD' => $sqlpassword
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));
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return ($this->db_connect_id) ? $this->db_connect_id : $this->sql_error('');
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}
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/**
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* {@inheritDoc}
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*/
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function sql_server_info($raw = false, $use_cache = true)
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{
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global $cache;
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if (!$use_cache || empty($cache) || ($this->sql_server_version = $cache->get('mssql_version')) === false)
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{
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$arr_server_info = sqlsrv_server_info($this->db_connect_id);
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$this->sql_server_version = $arr_server_info['SQLServerVersion'];
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if (!empty($cache) && $use_cache)
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{
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$cache->put('mssql_version', $this->sql_server_version);
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}
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}
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if ($raw)
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{
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return $this->sql_server_version;
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}
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return ($this->sql_server_version) ? 'MSSQL<br />' . $this->sql_server_version : 'MSSQL';
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}
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/**
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* {@inheritDoc}
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*/
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function sql_buffer_nested_transactions()
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{
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return true;
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}
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/**
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* SQL Transaction
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* @access private
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*/
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function _sql_transaction($status = 'begin')
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{
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switch ($status)
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{
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case 'begin':
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return sqlsrv_begin_transaction($this->db_connect_id);
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break;
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case 'commit':
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return sqlsrv_commit($this->db_connect_id);
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break;
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case 'rollback':
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return sqlsrv_rollback($this->db_connect_id);
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break;
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}
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return true;
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}
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/**
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* {@inheritDoc}
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*/
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function sql_query($query = '', $cache_ttl = 0)
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{
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if ($query != '')
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{
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global $cache;
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// EXPLAIN only in extra debug mode
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if (defined('DEBUG'))
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{
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$this->sql_report('start', $query);
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}
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else if (defined('PHPBB_DISPLAY_LOAD_TIME'))
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{
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$this->curtime = microtime(true);
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}
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$this->last_query_text = $query;
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$this->query_result = ($cache && $cache_ttl) ? $cache->sql_load($query) : false;
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$this->sql_add_num_queries($this->query_result);
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if ($this->query_result === false)
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{
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if (($this->query_result = @sqlsrv_query($this->db_connect_id, $query, array(), $this->query_options)) === false)
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{
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$this->sql_error($query);
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}
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// reset options for next query
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$this->query_options = array();
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if (defined('DEBUG'))
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{
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$this->sql_report('stop', $query);
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}
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else if (defined('PHPBB_DISPLAY_LOAD_TIME'))
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{
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$this->sql_time += microtime(true) - $this->curtime;
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}
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if ($cache && $cache_ttl)
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{
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$this->open_queries[(int) $this->query_result] = $this->query_result;
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$this->query_result = $cache->sql_save($this, $query, $this->query_result, $cache_ttl);
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}
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else if (strpos($query, 'SELECT') === 0 && $this->query_result)
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{
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$this->open_queries[(int) $this->query_result] = $this->query_result;
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}
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}
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else if (defined('DEBUG'))
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{
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$this->sql_report('fromcache', $query);
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}
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}
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else
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{
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return false;
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}
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return $this->query_result;
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}
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/**
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* Build LIMIT query
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*/
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function _sql_query_limit($query, $total, $offset = 0, $cache_ttl = 0)
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{
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$this->query_result = false;
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// total == 0 means all results - not zero results
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if ($offset == 0 && $total !== 0)
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{
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if (strpos($query, "SELECT") === false)
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{
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$query = "TOP {$total} " . $query;
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}
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else
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{
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$query = preg_replace('/SELECT(\s*DISTINCT)?/Dsi', 'SELECT$1 TOP '.$total, $query);
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}
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}
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else if ($offset > 0)
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{
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$query = preg_replace('/SELECT(\s*DISTINCT)?/Dsi', 'SELECT$1 TOP(10000000) ', $query);
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$query = 'SELECT *
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FROM (SELECT sub2.*, ROW_NUMBER() OVER(ORDER BY sub2.line2) AS line3
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FROM (SELECT 1 AS line2, sub1.* FROM (' . $query . ') AS sub1) as sub2) AS sub3';
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if ($total > 0)
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{
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$query .= ' WHERE line3 BETWEEN ' . ($offset+1) . ' AND ' . ($offset + $total);
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}
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else
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{
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$query .= ' WHERE line3 > ' . $offset;
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}
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}
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$result = $this->sql_query($query, $cache_ttl);
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return $result;
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}
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/**
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* {@inheritDoc}
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*/
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function sql_affectedrows()
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{
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return ($this->db_connect_id) ? @sqlsrv_rows_affected($this->query_result) : false;
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}
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/**
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* {@inheritDoc}
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*/
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function sql_fetchrow($query_id = false)
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{
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global $cache;
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if ($query_id === false)
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{
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$query_id = $this->query_result;
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}
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if ($cache && $cache->sql_exists($query_id))
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{
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return $cache->sql_fetchrow($query_id);
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}
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if ($query_id === false)
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{
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return false;
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}
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$row = @sqlsrv_fetch_array($query_id, SQLSRV_FETCH_ASSOC);
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if ($row)
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{
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foreach ($row as $key => $value)
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{
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$row[$key] = ($value === ' ' || $value === null) ? '' : $value;
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}
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// remove helper values from LIMIT queries
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if (isset($row['line2']))
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{
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unset($row['line2'], $row['line3']);
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}
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}
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return (sizeof($row)) ? $row : false;
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}
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/**
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* {@inheritDoc}
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*/
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function sql_nextid()
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{
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$result_id = @sqlsrv_query($this->db_connect_id, 'SELECT @@IDENTITY');
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if ($result_id !== false)
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{
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$row = @sqlsrv_fetch_array($result_id);
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$id = $row[0];
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@sqlsrv_free_stmt($result_id);
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return $id;
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}
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else
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{
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return false;
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}
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}
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/**
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* {@inheritDoc}
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*/
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function sql_freeresult($query_id = false)
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{
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global $cache;
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if ($query_id === false)
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{
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$query_id = $this->query_result;
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}
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if ($cache && !is_object($query_id) && $cache->sql_exists($query_id))
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{
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return $cache->sql_freeresult($query_id);
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}
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if (isset($this->open_queries[(int) $query_id]))
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{
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unset($this->open_queries[(int) $query_id]);
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return @sqlsrv_free_stmt($query_id);
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}
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return false;
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}
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/**
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* return sql error array
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* @access private
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*/
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function _sql_error()
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{
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if (function_exists('sqlsrv_errors'))
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{
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$errors = @sqlsrv_errors(SQLSRV_ERR_ERRORS);
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$error_message = '';
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$code = 0;
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if ($errors != null)
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{
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foreach ($errors as $error)
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{
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$error_message .= "SQLSTATE: " . $error['SQLSTATE'] . "\n";
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$error_message .= "code: " . $error['code'] . "\n";
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$code = $error['code'];
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$error_message .= "message: " . $error['message'] . "\n";
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}
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$this->last_error_result = $error_message;
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$error = $this->last_error_result;
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}
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else
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{
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$error = (isset($this->last_error_result) && $this->last_error_result) ? $this->last_error_result : array();
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}
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$error = array(
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'message' => $error,
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'code' => $code,
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);
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}
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else
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{
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$error = array(
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'message' => $this->connect_error,
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'code' => '',
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);
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}
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return $error;
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}
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/**
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* Close sql connection
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* @access private
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*/
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function _sql_close()
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{
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return @sqlsrv_close($this->db_connect_id);
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}
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/**
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* Build db-specific report
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* @access private
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*/
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function _sql_report($mode, $query = '')
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{
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switch ($mode)
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{
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case 'start':
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$html_table = false;
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@sqlsrv_query($this->db_connect_id, 'SET SHOWPLAN_TEXT ON;');
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if ($result = @sqlsrv_query($this->db_connect_id, $query))
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{
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@sqlsrv_next_result($result);
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while ($row = @sqlsrv_fetch_array($result))
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{
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$html_table = $this->sql_report('add_select_row', $query, $html_table, $row);
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}
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}
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@sqlsrv_query($this->db_connect_id, 'SET SHOWPLAN_TEXT OFF;');
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@sqlsrv_free_stmt($result);
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if ($html_table)
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{
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$this->html_hold .= '</table>';
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}
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break;
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case 'fromcache':
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$endtime = explode(' ', microtime());
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$endtime = $endtime[0] + $endtime[1];
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$result = @sqlsrv_query($this->db_connect_id, $query);
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while ($void = @sqlsrv_fetch_array($result))
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{
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// Take the time spent on parsing rows into account
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}
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@sqlsrv_free_stmt($result);
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$splittime = explode(' ', microtime());
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$splittime = $splittime[0] + $splittime[1];
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$this->sql_report('record_fromcache', $query, $endtime, $splittime);
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break;
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}
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}
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/**
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* Utility method used to retrieve number of rows
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* Emulates mysql_num_rows
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* Used in acp_database.php -> write_data_mssqlnative()
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* Requires a static or keyset cursor to be definde via
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* mssqlnative_set_query_options()
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*/
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function mssqlnative_num_rows($res)
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{
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if ($res !== false)
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{
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return sqlsrv_num_rows($res);
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}
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else
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{
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return false;
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}
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}
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/**
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* Allows setting mssqlnative specific query options passed to sqlsrv_query as 4th parameter.
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*/
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function mssqlnative_set_query_options($options)
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{
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$this->query_options = $options;
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}
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}
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