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b21cee731a
* develop-olympus: [ticket/10352] Add missing break for Oracle's sql_table_drop() [ticket/10351] Fix Oracle's sql_column_remove() [ticket/10294] Fix sql_affectedrows() in mssqlnative driver.
648 lines
15 KiB
PHP
648 lines
15 KiB
PHP
<?php
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/**
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*
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* @package dbal
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* @version $Id$
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* @copyright (c) 2010 phpBB Group
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* @license http://opensource.org/licenses/gpl-license.php GNU Public License
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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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/**
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* @ignore
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*/
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if (!defined('IN_PHPBB'))
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{
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exit;
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}
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include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
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/**
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* Prior to version 1.1 the SQL Server Native PHP driver didn't support sqlsrv_num_rows, or cursor based seeking so we recall all rows into an array
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* and maintain our own cursor index into that array.
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*/
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class result_mssqlnative
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{
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public function result_mssqlnative($queryresult = false)
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{
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$this->m_cursor = 0;
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$this->m_rows = array();
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$this->m_num_fields = sqlsrv_num_fields($queryresult);
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$this->m_field_meta = sqlsrv_field_metadata($queryresult);
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while ($row = sqlsrv_fetch_array($queryresult, SQLSRV_FETCH_ASSOC))
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{
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if ($row !== null)
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{
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foreach($row as $k => $v)
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{
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if (is_object($v) && method_exists($v, 'format'))
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{
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$row[$k] = $v->format("Y-m-d\TH:i:s\Z");
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}
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}
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$this->m_rows[] = $row;//read results into memory, cursors are not supported
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}
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}
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$this->m_row_count = sizeof($this->m_rows);
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}
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private function array_to_obj($array, &$obj)
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{
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foreach ($array as $key => $value)
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{
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if (is_array($value))
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{
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$obj->$key = new stdClass();
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array_to_obj($value, $obj->$key);
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}
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else
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{
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$obj->$key = $value;
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}
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}
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return $obj;
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}
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public function fetch($mode = SQLSRV_FETCH_BOTH, $object_class = 'stdClass')
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{
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if ($this->m_cursor >= $this->m_row_count || $this->m_row_count == 0)
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{
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return false;
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}
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$ret = false;
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$arr_num = array();
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if ($mode == SQLSRV_FETCH_NUMERIC || $mode == SQLSRV_FETCH_BOTH)
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{
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foreach($this->m_rows[$this->m_cursor] as $key => $value)
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{
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$arr_num[] = $value;
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}
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}
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switch ($mode)
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{
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case SQLSRV_FETCH_ASSOC:
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$ret = $this->m_rows[$this->m_cursor];
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break;
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case SQLSRV_FETCH_NUMERIC:
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$ret = $arr_num;
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break;
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case 'OBJECT':
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$ret = $this->array_to_obj($this->m_rows[$this->m_cursor], $o = new $object_class);
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break;
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case SQLSRV_FETCH_BOTH:
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default:
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$ret = $this->m_rows[$this->m_cursor] + $arr_num;
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break;
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}
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$this->m_cursor++;
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return $ret;
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}
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public function get($pos, $fld)
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{
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return $this->m_rows[$pos][$fld];
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}
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public function num_rows()
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{
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return $this->m_row_count;
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}
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public function seek($iRow)
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{
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$this->m_cursor = min($iRow, $this->m_row_count);
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}
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public function num_fields()
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{
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return $this->m_num_fields;
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}
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public function field_name($nr)
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{
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$arr_keys = array_keys($this->m_rows[0]);
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return $arr_keys[$nr];
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}
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public function field_type($nr)
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{
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$i = 0;
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$int_type = -1;
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$str_type = '';
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foreach ($this->m_field_meta as $meta)
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{
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if ($nr == $i)
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{
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$int_type = $meta['Type'];
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break;
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}
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$i++;
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}
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//http://msdn.microsoft.com/en-us/library/cc296183.aspx contains type table
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switch ($int_type)
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{
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case SQLSRV_SQLTYPE_BIGINT: $str_type = 'bigint'; break;
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case SQLSRV_SQLTYPE_BINARY: $str_type = 'binary'; break;
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case SQLSRV_SQLTYPE_BIT: $str_type = 'bit'; break;
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case SQLSRV_SQLTYPE_CHAR: $str_type = 'char'; break;
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case SQLSRV_SQLTYPE_DATETIME: $str_type = 'datetime'; break;
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case SQLSRV_SQLTYPE_DECIMAL/*($precision, $scale)*/: $str_type = 'decimal'; break;
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case SQLSRV_SQLTYPE_FLOAT: $str_type = 'float'; break;
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case SQLSRV_SQLTYPE_IMAGE: $str_type = 'image'; break;
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case SQLSRV_SQLTYPE_INT: $str_type = 'int'; break;
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case SQLSRV_SQLTYPE_MONEY: $str_type = 'money'; break;
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case SQLSRV_SQLTYPE_NCHAR/*($charCount)*/: $str_type = 'nchar'; break;
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case SQLSRV_SQLTYPE_NUMERIC/*($precision, $scale)*/: $str_type = 'numeric'; break;
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case SQLSRV_SQLTYPE_NVARCHAR/*($charCount)*/: $str_type = 'nvarchar'; break;
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case SQLSRV_SQLTYPE_NTEXT: $str_type = 'ntext'; break;
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case SQLSRV_SQLTYPE_REAL: $str_type = 'real'; break;
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case SQLSRV_SQLTYPE_SMALLDATETIME: $str_type = 'smalldatetime'; break;
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case SQLSRV_SQLTYPE_SMALLINT: $str_type = 'smallint'; break;
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case SQLSRV_SQLTYPE_SMALLMONEY: $str_type = 'smallmoney'; break;
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case SQLSRV_SQLTYPE_TEXT: $str_type = 'text'; break;
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case SQLSRV_SQLTYPE_TIMESTAMP: $str_type = 'timestamp'; break;
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case SQLSRV_SQLTYPE_TINYINT: $str_type = 'tinyint'; break;
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case SQLSRV_SQLTYPE_UNIQUEIDENTIFIER: $str_type = 'uniqueidentifier'; break;
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case SQLSRV_SQLTYPE_UDT: $str_type = 'UDT'; break;
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case SQLSRV_SQLTYPE_VARBINARY/*($byteCount)*/: $str_type = 'varbinary'; break;
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case SQLSRV_SQLTYPE_VARCHAR/*($charCount)*/: $str_type = 'varchar'; break;
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case SQLSRV_SQLTYPE_XML: $str_type = 'xml'; break;
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default: $str_type = $int_type;
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}
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return $str_type;
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}
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public function free()
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{
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unset($this->m_rows);
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return;
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}
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}
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/**
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* @package dbal
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*/
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class dbal_mssqlnative extends dbal
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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 $query_options = array();
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/**
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* Connect to server
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*/
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function sql_connect($sqlserver, $sqluser, $sqlpassword, $database, $port = false, $persistency = false, $new_link = false)
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{
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# Test for driver support, to avoid suppressed fatal error
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if (!function_exists('sqlsrv_connect'))
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{
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trigger_error('Native MS SQL Server driver for PHP is missing or needs to be updated. Version 1.1 or later is required to install phpBB3. You can download the driver from: http://www.microsoft.com/sqlserver/2005/en/us/PHP-Driver.aspx\n', E_USER_ERROR);
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}
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//set up connection variables
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$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 . $port : '');
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//connect to database
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error_reporting(E_ALL);
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$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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* Version information about used database
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* @param bool $raw if true, only return the fetched sql_server_version
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* @param bool $use_cache If true, it is safe to retrieve the value from the cache
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* @return string sql server version
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*/
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function sql_server_info($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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* Base query method
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*
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* @param string $query Contains the SQL query which shall be executed
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* @param int $cache_ttl Either 0 to avoid caching or the time in seconds which the result shall be kept in cache
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* @return mixed When casted to bool the returned value returns true on success and false on failure
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*
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* @access public
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*/
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function sql_query($query = '', $cache_ttl = 0)
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{
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if ($query != '')
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{
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global $cache;
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// EXPLAIN only in extra debug mode
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if (defined('DEBUG_EXTRA'))
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{
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$this->sql_report('start', $query);
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}
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$this->last_query_text = $query;
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$this->query_result = ($cache_ttl && method_exists($cache, 'sql_load')) ? $cache->sql_load($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_EXTRA'))
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{
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$this->sql_report('stop', $query);
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}
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if ($cache_ttl && method_exists($cache, 'sql_save'))
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{
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$this->open_queries[(int) $this->query_result] = $this->query_result;
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$cache->sql_save($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] = $this->query_result;
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}
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}
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else if (defined('DEBUG_EXTRA'))
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{
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$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 $result;
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}
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/**
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* Return number of affected rows
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*/
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function sql_affectedrows()
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{
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return (!empty($this->query_result)) ? @sqlsrv_rows_affected($this->query_result) : false;
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}
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/**
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* Fetch current row
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*/
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function sql_fetchrow($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 = $this->query_result;
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}
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if (isset($cache->sql_rowset[$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 $row;
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}
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/**
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* Seek to given row number
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* rownum is zero-based
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*/
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function sql_rowseek($rownum, &$query_id)
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{
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global $cache;
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if (isset($cache->sql_rowset[$query_id]))
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{
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return $cache->sql_rowseek($rownum, $query_id);
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}
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$seek = new result_mssqlnative($query_id);
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$row = $seek->seek($rownum);
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return ($row = $seek->fetch()) ? $row : false;
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}
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/**
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* Get last inserted id after insert statement
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*/
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function sql_nextid()
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{
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$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 $id;
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}
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else
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{
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return false;
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}
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}
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/**
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* Free sql result
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*/
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function sql_freeresult($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 = $this->query_result;
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}
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if (isset($cache->sql_rowset[$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($this->open_queries[$query_id]))
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{
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unset($this->open_queries[$query_id]);
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return @sqlsrv_free_stmt($query_id);
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}
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return false;
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}
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/**
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* Escape string used in sql query
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*/
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function sql_escape($msg)
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{
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return str_replace(array("'", "\0"), array("''", ''), $msg);
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}
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/**
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* Build LIKE expression
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* @access private
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*/
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function _sql_like_expression($expression)
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{
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return $expression . " ESCAPE '\\'";
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}
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/**
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* return sql error array
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* @access private
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*/
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function _sql_error()
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{
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$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'];
|
|
$error_message .= "message: ".$error[ 'message']."\n";
|
|
}
|
|
$this->last_error_result = $error_message;
|
|
$error = $this->last_error_result;
|
|
}
|
|
else
|
|
{
|
|
$error = (isset($this->last_error_result) && $this->last_error_result) ? $this->last_error_result : array();
|
|
}
|
|
|
|
return array(
|
|
'message' => $error,
|
|
'code' => $code,
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Build db-specific query data
|
|
* @access private
|
|
*/
|
|
function _sql_custom_build($stage, $data)
|
|
{
|
|
return $data;
|
|
}
|
|
|
|
/**
|
|
* Close sql connection
|
|
* @access private
|
|
*/
|
|
function _sql_close()
|
|
{
|
|
return @sqlsrv_close($this->db_connect_id);
|
|
}
|
|
|
|
/**
|
|
* Build db-specific report
|
|
* @access private
|
|
*/
|
|
function _sql_report($mode, $query = '')
|
|
{
|
|
switch ($mode)
|
|
{
|
|
case 'start':
|
|
$html_table = false;
|
|
@sqlsrv_query($this->db_connect_id, 'SET SHOWPLAN_TEXT ON;');
|
|
if ($result = @sqlsrv_query($this->db_connect_id, $query))
|
|
{
|
|
@sqlsrv_next_result($result);
|
|
while ($row = @sqlsrv_fetch_array($result))
|
|
{
|
|
$html_table = $this->sql_report('add_select_row', $query, $html_table, $row);
|
|
}
|
|
}
|
|
@sqlsrv_query($this->db_connect_id, 'SET SHOWPLAN_TEXT OFF;');
|
|
@sqlsrv_free_stmt($result);
|
|
|
|
if ($html_table)
|
|
{
|
|
$this->html_hold .= '</table>';
|
|
}
|
|
break;
|
|
|
|
case 'fromcache':
|
|
$endtime = explode(' ', microtime());
|
|
$endtime = $endtime[0] + $endtime[1];
|
|
|
|
$result = @sqlsrv_query($this->db_connect_id, $query);
|
|
while ($void = @sqlsrv_fetch_array($result))
|
|
{
|
|
// Take the time spent on parsing rows into account
|
|
}
|
|
@sqlsrv_free_stmt($result);
|
|
|
|
$splittime = explode(' ', microtime());
|
|
$splittime = $splittime[0] + $splittime[1];
|
|
|
|
$this->sql_report('record_fromcache', $query, $endtime, $splittime);
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Utility method used to retrieve number of rows
|
|
* Emulates mysql_num_rows
|
|
* Used in acp_database.php -> write_data_mssqlnative()
|
|
* Requires a static or keyset cursor to be definde via
|
|
* mssqlnative_set_query_options()
|
|
*/
|
|
function mssqlnative_num_rows($res)
|
|
{
|
|
if ($res !== false)
|
|
{
|
|
return sqlsrv_num_rows($res);
|
|
}
|
|
else
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Allows setting mssqlnative specific query options passed to sqlsrv_query as 4th parameter.
|
|
*/
|
|
function mssqlnative_set_query_options($options)
|
|
{
|
|
$this->query_options = $options;
|
|
}
|
|
}
|