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); } $this->db_connect_id = ($this->persistency) ? @odbc_pconnect($this->server, $this->user, $sqlpassword) : @odbc_connect($this->server, $this->user, $sqlpassword); return ($this->db_connect_id) ? $this->db_connect_id : $this->sql_error(''); } /** * Version information about used database * @param bool $raw if true, only return the fetched sql_server_version * @param bool $use_cache If true, it is safe to retrieve the value from the cache * @return string sql server version */ function sql_server_info($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)
' . $this->sql_server_version : 'MSSQL (ODBC)'; } /** * SQL Transaction * @access private */ function _sql_transaction($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; } /** * 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->last_query_text = $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 ($this->query_result === false) { if (($this->query_result = @odbc_exec($this->db_connect_id, $query)) === 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 $this->query_result; } /** * Build LIMIT query */ function _sql_query_limit($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 $result; } /** * Return number of affected rows */ function sql_affectedrows() { return ($this->db_connect_id) ? @odbc_num_rows($this->query_result) : false; } /** * Fetch current row * @note number of bytes returned depends on odbc.defaultlrl php.ini setting. If it is limited to 4K for example only 4K of data is returned max. */ function sql_fetchrow($query_id = false, $debug = false) { global $cache; if ($query_id === false) { $query_id = $this->query_result; } if (isset($cache->sql_rowset[$query_id])) { return $cache->sql_fetchrow($query_id); } return ($query_id !== false) ? @odbc_fetch_array($query_id) : false; } /** * Seek to given row number * rownum is zero-based */ function sql_rowseek($rownum, &$query_id) { global $cache; if ($query_id === false) { $query_id = $this->query_result; } if (isset($cache->sql_rowset[$query_id])) { return $cache->sql_rowseek($rownum, $query_id); } if ($query_id === false) { return false; } $this->sql_freeresult($query_id); $query_id = $this->sql_query($this->last_query_text); if ($query_id === false) { return false; } // We do not fetch the row for rownum == 0 because then the next resultset would be the second row for ($i = 0; $i < $rownum; $i++) { if (!$this->sql_fetchrow($query_id)) { return false; } } return true; } /** * Get last inserted id after insert statement */ function sql_nextid() { $result_id = @odbc_exec($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; } /** * Free sql result */ function sql_freeresult($query_id = false) { global $cache; if ($query_id === false) { $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) $query_id]); return @odbc_free_result($query_id); } return false; } /** * Escape string used in sql query */ function sql_escape($msg) { return str_replace(array("'", "\0"), array("''", ''), $msg); } /** * Build LIKE expression * @access private */ function _sql_like_expression($expression) { return $expression . " ESCAPE '\\'"; } /** * Build db-specific query data * @access private */ function _sql_custom_build($stage, $data) { return $data; } /** * return sql error array * @access private */ function _sql_error() { return array( 'message' => @odbc_errormsg(), 'code' => @odbc_error() ); } /** * Close sql connection * @access private */ function _sql_close() { return @odbc_close($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, $query); while ($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; } } } ?>