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Edit File: mssql_odbc.php
<?php /** * * This file is part of the phpBB Forum Software package. * * @copyright (c) phpBB Limited <https://www.phpbb.com> * @license GNU General Public License, version 2 (GPL-2.0) * * For full copyright and license information, please see * the docs/CREDITS.txt file. * */ namespace phpbb\db\driver; /** * Unified ODBC functions * Unified ODBC functions support any database having ODBC driver, for example Adabas D, IBM DB2, iODBC, Solid, Sybase SQL Anywhere... * Here we only support MSSQL Server 2000+ because of the provided schema * * @note number of bytes returned for returning data depends on odbc.defaultlrl php.ini setting. * If it is limited to 4K for example only 4K of data is returned max, resulting in incomplete theme data for example. * @note odbc.defaultbinmode may affect UTF8 characters */ class mssql_odbc extends \phpbb\db\driver\mssql_base { var $last_query_text = ''; var $connect_error = ''; /** * {@inheritDoc} */ function sql_connect($sqlserver, $sqluser, $sqlpassword, $database, $port = false, $persistency = false, $new_link = false) { $this->persistency = $persistency; $this->user = $sqluser; $this->dbname = $database; $port_delimiter = (defined('PHP_OS') && substr(PHP_OS, 0, 3) === 'WIN') ? ',' : ':'; $this->server = $sqlserver . (($port) ? $port_delimiter . $port : ''); $max_size = @ini_get('odbc.defaultlrl'); if (!empty($max_size)) { $unit = strtolower(substr($max_size, -1, 1)); $max_size = (int) $max_size; if ($unit == 'k') { $max_size = floor($max_size / 1024); } else if ($unit == 'g') { $max_size *= 1024; } else if (is_numeric($unit)) { $max_size = floor((int) ($max_size . $unit) / 1048576); } $max_size = max(8, $max_size) . 'M'; @ini_set('odbc.defaultlrl', $max_size); } if ($this->persistency) { if (!function_exists('odbc_pconnect')) { $this->connect_error = 'odbc_pconnect function does not exist, is odbc extension installed?'; return $this->sql_error(''); } $this->db_connect_id = @odbc_pconnect($this->server, $this->user, $sqlpassword); } else { if (!function_exists('odbc_connect')) { $this->connect_error = 'odbc_connect function does not exist, is odbc extension installed?'; return $this->sql_error(''); } $this->db_connect_id = @odbc_connect($this->server, $this->user, $sqlpassword); } return ($this->db_connect_id) ? $this->db_connect_id : $this->sql_error(''); } /** * {@inheritDoc} */ function sql_server_info($raw = false, $use_cache = true) { global $cache; if (!$use_cache || empty($cache) || ($this->sql_server_version = $cache->get('mssqlodbc_version')) === false) { $result_id = @odbc_exec($this->db_connect_id, "SELECT SERVERPROPERTY('productversion'), SERVERPROPERTY('productlevel'), SERVERPROPERTY('edition')"); $row = false; if ($result_id) { $row = odbc_fetch_array($result_id); odbc_free_result($result_id); } $this->sql_server_version = ($row) ? trim(implode(' ', $row)) : 0; if (!empty($cache) && $use_cache) { $cache->put('mssqlodbc_version', $this->sql_server_version); } } if ($raw) { return $this->sql_server_version; } return ($this->sql_server_version) ? 'MSSQL (ODBC)<br />' . $this->sql_server_version : 'MSSQL (ODBC)'; } /** * SQL Transaction * @access private */ function _sql_transaction($status = 'begin') { switch ($status) { case 'begin': return @odbc_exec($this->db_connect_id, 'BEGIN TRANSACTION'); break; case 'commit': return @odbc_exec($this->db_connect_id, 'COMMIT TRANSACTION'); break; case 'rollback': return @odbc_exec($this->db_connect_id, 'ROLLBACK TRANSACTION'); break; } return true; } /** * {@inheritDoc} */ function sql_query($query = '', $cache_ttl = 0) { if ($query != '') { global $cache; if ($this->debug_sql_explain) { $this->sql_report('start', $query); } else if ($this->debug_load_time) { $this->curtime = microtime(true); } $this->last_query_text = $query; $this->query_result = ($cache && $cache_ttl) ? $cache->sql_load($query) : false; $this->sql_add_num_queries($this->query_result); if ($this->query_result === false) { try { $this->query_result = @odbc_exec($this->db_connect_id, $query); } catch (\Error $e) { // Do nothing as SQL driver will report the error } if ($this->query_result === false) { $this->sql_error($query); } if ($this->debug_sql_explain) { $this->sql_report('stop', $query); } else if ($this->debug_load_time) { $this->sql_time += microtime(true) - $this->curtime; } if (!$this->query_result) { return false; } $safe_query_id = $this->clean_query_id($this->query_result); if ($cache && $cache_ttl) { $this->open_queries[$safe_query_id] = $this->query_result; $this->query_result = $cache->sql_save($this, $query, $this->query_result, $cache_ttl); } else if (strpos($query, 'SELECT') === 0) { $this->open_queries[$safe_query_id] = $this->query_result; } } else if ($this->debug_sql_explain) { $this->sql_report('fromcache', $query); } } else { return false; } return $this->query_result; } /** * Build LIMIT query */ function _sql_query_limit($query, $total, $offset = 0, $cache_ttl = 0) { $this->query_result = false; // Since TOP is only returning a set number of rows we won't need it if total is set to 0 (return all rows) if ($total) { // We need to grab the total number of rows + the offset number of rows to get the correct result if (strpos($query, 'SELECT DISTINCT') === 0) { $query = 'SELECT DISTINCT TOP ' . ($total + $offset) . ' ' . substr($query, 15); } else { $query = 'SELECT TOP ' . ($total + $offset) . ' ' . substr($query, 6); } } $result = $this->sql_query($query, $cache_ttl); // Seek by $offset rows if ($offset) { $this->sql_rowseek($offset, $result); } return $result; } /** * {@inheritDoc} */ function sql_affectedrows() { return ($this->db_connect_id) ? @odbc_num_rows($this->query_result) : false; } /** * {@inheritDoc} */ function sql_fetchrow($query_id = false) { global $cache; if ($query_id === false) { $query_id = $this->query_result; } $safe_query_id = $this->clean_query_id($query_id); if ($cache && $cache->sql_exists($safe_query_id)) { return $cache->sql_fetchrow($safe_query_id); } return ($query_id) ? odbc_fetch_array($query_id) : false; } /** * {@inheritdoc} */ public function sql_last_inserted_id() { $result_id = @odbc_exec($this->db_connect_id, 'SELECT @@IDENTITY'); if ($result_id) { if (odbc_fetch_array($result_id)) { $id = odbc_result($result_id, 1); odbc_free_result($result_id); return $id; } odbc_free_result($result_id); } return false; } /** * {@inheritDoc} */ function sql_freeresult($query_id = false) { global $cache; if ($query_id === false) { $query_id = $this->query_result; } $safe_query_id = $this->clean_query_id($query_id); if ($cache && $cache->sql_exists($safe_query_id)) { return $cache->sql_freeresult($safe_query_id); } if (isset($this->open_queries[$safe_query_id])) { unset($this->open_queries[$safe_query_id]); return odbc_free_result($query_id); } return false; } /** * return sql error array * @access private */ function _sql_error() { if (function_exists('odbc_errormsg')) { $error = array( 'message' => @odbc_errormsg(), 'code' => @odbc_error(), ); } else { $error = array( 'message' => $this->connect_error, 'code' => '', ); } return $error; } /** * Close sql connection * @access private */ function _sql_close() { return @odbc_close($this->db_connect_id); } /** * Build db-specific report * @access private */ function _sql_report($mode, $query = '') { switch ($mode) { case 'start': break; case 'fromcache': $endtime = explode(' ', microtime()); $endtime = $endtime[0] + $endtime[1]; $result = @odbc_exec($this->db_connect_id, $query); if ($result) { while ($void = odbc_fetch_array($result)) { // Take the time spent on parsing rows into account } odbc_free_result($result); } $splittime = explode(' ', microtime()); $splittime = $splittime[0] + $splittime[1]; $this->sql_report('record_fromcache', $query, $endtime, $splittime); break; } } }