/includes/db/firebird.php
PHP | 491 lines | 391 code | 40 blank | 60 comment | 22 complexity | dbb22a57e4436203f9afdfdef7e7f56f MD5 | raw file
Possible License(s): AGPL-1.0
- <?php
- /**
- *
- * @package dbal
- * @version $Id: firebird.php 8479 2008-03-29 00:22:48Z naderman $
- * @copyright (c) 2005 phpBB Group
- * @license http://opensource.org/licenses/gpl-license.php GNU Public License
- *
- */
- /**
- * @ignore
- */
- if (!defined('IN_PHPBB'))
- {
- exit;
- }
- include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
- /**
- * Firebird/Interbase Database Abstraction Layer
- * Minimum Requirement is Firebird 2.0
- * @package dbal
- */
- class dbal_firebird extends dbal
- {
- var $last_query_text = '';
- var $service_handle = false;
- var $affected_rows = 0;
- /**
- * Connect to server
- */
- function sql_connect($sqlserver, $sqluser, $sqlpassword, $database, $port = false, $persistency = false, $new_link = false)
- {
- $this->persistency = $persistency;
- $this->user = $sqluser;
- $this->server = $sqlserver . (($port) ? ':' . $port : '');
- $this->dbname = $database;
- $this->db_connect_id = ($this->persistency) ? @ibase_pconnect($this->server . ':' . $this->dbname, $this->user, $sqlpassword, false, false, 3) : @ibase_connect($this->server . ':' . $this->dbname, $this->user, $sqlpassword, false, false, 3);
- $this->service_handle = (function_exists('ibase_service_attach')) ? @ibase_service_attach($this->server, $this->user, $sqlpassword) : false;
- return ($this->db_connect_id) ? $this->db_connect_id : $this->sql_error('');
- }
- /**
- * Version information about used database
- */
- function sql_server_info()
- {
- if ($this->service_handle !== false && function_exists('ibase_server_info'))
- {
- return @ibase_server_info($this->service_handle, IBASE_SVC_SERVER_VERSION);
- }
- return 'Firebird/Interbase';
- }
- /**
- * SQL Transaction
- * @access private
- */
- function _sql_transaction($status = 'begin')
- {
- switch ($status)
- {
- case 'begin':
- return true;
- break;
- case 'commit':
- return @ibase_commit();
- break;
- case 'rollback':
- return @ibase_rollback();
- 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)
- {
- $array = array();
- // We overcome Firebird's 32767 char limit by binding vars
- if (strlen($query) > 32767)
- {
- if (preg_match('/^(INSERT INTO[^(]++)\\(([^()]+)\\) VALUES[^(]++\\((.*?)\\)$/s', $query, $regs))
- {
- if (strlen($regs[3]) > 32767)
- {
- preg_match_all('/\'(?:[^\']++|\'\')*+\'|[\d-.]+/', $regs[3], $vals, PREG_PATTERN_ORDER);
- $inserts = $vals[0];
- unset($vals);
- foreach ($inserts as $key => $value)
- {
- if (!empty($value) && $value[0] === "'" && strlen($value) > 32769) // check to see if this thing is greater than the max + 'x2
- {
- $inserts[$key] = '?';
- $array[] = str_replace("''", "'", substr($value, 1, -1));
- }
- }
- $query = $regs[1] . '(' . $regs[2] . ') VALUES (' . implode(', ', $inserts) . ')';
- }
- }
- else if (preg_match('/^(UPDATE ([\\w_]++)\\s+SET )([\\w_]++\\s*=\\s*(?:\'(?:[^\']++|\'\')*+\'|\\d+)(?:,\\s*[\\w_]++\\s*=\\s*(?:\'(?:[^\']++|\'\')*+\'|[\d-.]+))*+)\\s+(WHERE.*)$/s', $query, $data))
- {
- if (strlen($data[3]) > 32767)
- {
- $update = $data[1];
- $where = $data[4];
- preg_match_all('/(\\w++)\\s*=\\s*(\'(?:[^\']++|\'\')*+\'|[\d-.]++)/', $data[3], $temp, PREG_SET_ORDER);
- unset($data);
- $cols = array();
- foreach ($temp as $value)
- {
- if (!empty($value[2]) && $value[2][0] === "'" && strlen($value[2]) > 32769) // check to see if this thing is greater than the max + 'x2
- {
- $array[] = str_replace("''", "'", substr($value[2], 1, -1));
- $cols[] = $value[1] . '=?';
- }
- else
- {
- $cols[] = $value[1] . '=' . $value[2];
- }
- }
- $query = $update . implode(', ', $cols) . ' ' . $where;
- unset($cols);
- }
- }
- }
- if (!function_exists('ibase_affected_rows') && (preg_match('/^UPDATE ([\w_]++)\s+SET [\w_]++\s*=\s*(?:\'(?:[^\']++|\'\')*+\'|[\d-.]+)(?:,\s*[\w_]++\s*=\s*(?:\'(?:[^\']++|\'\')*+\'|[\d-.]+))*+\s+(WHERE.*)?$/s', $query, $regs) || preg_match('/^DELETE FROM ([\w_]++)\s*(WHERE\s*.*)?$/s', $query, $regs)))
- {
- $affected_sql = 'SELECT COUNT(*) as num_rows_affected FROM ' . $regs[1];
- if (!empty($regs[2]))
- {
- $affected_sql .= ' ' . $regs[2];
- }
- if (!($temp_q_id = @ibase_query($this->db_connect_id, $affected_sql)))
- {
- return false;
- }
- $temp_result = @ibase_fetch_assoc($temp_q_id);
- @ibase_free_result($temp_q_id);
- $this->affected_rows = ($temp_result) ? $temp_result['NUM_ROWS_AFFECTED'] : false;
- }
- if (sizeof($array))
- {
- $p_query = @ibase_prepare($this->db_connect_id, $query);
- array_unshift($array, $p_query);
- $this->query_result = call_user_func_array('ibase_execute', $array);
- unset($array);
- if ($this->query_result === false)
- {
- $this->sql_error($query);
- }
- }
- else if (($this->query_result = @ibase_query($this->db_connect_id, $query)) === false)
- {
- $this->sql_error($query);
- }
- if (defined('DEBUG_EXTRA'))
- {
- $this->sql_report('stop', $query);
- }
- if (!$this->transaction)
- {
- if (function_exists('ibase_commit_ret'))
- {
- @ibase_commit_ret();
- }
- else
- {
- // way cooler than ibase_commit_ret :D
- @ibase_query('COMMIT RETAIN;');
- }
- }
- 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) ? $this->query_result : false;
- }
- /**
- * Build LIMIT query
- */
- function _sql_query_limit($query, $total, $offset = 0, $cache_ttl = 0)
- {
- $this->query_result = false;
- $query = 'SELECT FIRST ' . $total . ((!empty($offset)) ? ' SKIP ' . $offset : '') . substr($query, 6);
- return $this->sql_query($query, $cache_ttl);
- }
- /**
- * Return number of affected rows
- */
- function sql_affectedrows()
- {
- // PHP 5+ function
- if (function_exists('ibase_affected_rows'))
- {
- return ($this->db_connect_id) ? @ibase_affected_rows($this->db_connect_id) : false;
- }
- else
- {
- return $this->affected_rows;
- }
- }
- /**
- * Fetch current row
- */
- function sql_fetchrow($query_id = 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);
- }
- if ($query_id === false)
- {
- return false;
- }
- $row = array();
- $cur_row = @ibase_fetch_object($query_id, IBASE_TEXT);
- if (!$cur_row)
- {
- return false;
- }
- foreach (get_object_vars($cur_row) as $key => $value)
- {
- $row[strtolower($key)] = (is_string($value)) ? trim(str_replace(array("\\0", "\\n"), array("\0", "\n"), $value)) : $value;
- }
- return (sizeof($row)) ? $row : false;
- }
- /**
- * Seek to given row number
- * rownum is zero-based
- */
- function sql_rowseek($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;
- }
- $this->sql_freeresult($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()
- {
- $query_id = $this->query_result;
- if ($query_id !== false && $this->last_query_text != '')
- {
- if ($this->query_result && preg_match('#^INSERT[\t\n ]+INTO[\t\n ]+([a-z0-9\_\-]+)#i', $this->last_query_text, $tablename))
- {
- $sql = 'SELECT GEN_ID(' . $tablename[1] . '_gen, 0) AS new_id FROM RDB$DATABASE';
- if (!($temp_q_id = @ibase_query($this->db_connect_id, $sql)))
- {
- return false;
- }
- $temp_result = @ibase_fetch_assoc($temp_q_id);
- @ibase_free_result($temp_q_id);
- return ($temp_result) ? $temp_result['NEW_ID'] : false;
- }
- }
- return false;
- }
- /**
- * Free sql result
- */
- function sql_freeresult($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) $query_id]);
- return @ibase_free_result($query_id);
- }
- return false;
- }
- /**
- * Escape string used in sql query
- */
- function sql_escape($msg)
- {
- return str_replace("'", "''", $msg);
- }
- /**
- * Build LIKE expression
- * @access private
- */
- function _sql_like_expression($expression)
- {
- return $expression . " ESCAPE '\\'";
- }
- /**
- * Build db-specific query data
- * @access private
- */
- function _sql_custom_build($stage, $data)
- {
- return $data;
- }
- /**
- * return sql error array
- * @access private
- */
- function _sql_error()
- {
- return array(
- 'message' => @ibase_errmsg(),
- 'code' => (@function_exists('ibase_errcode') ? @ibase_errcode() : '')
- );
- }
- /**
- * Close sql connection
- * @access private
- */
- function _sql_close()
- {
- if ($this->service_handle !== false)
- {
- @ibase_service_detach($this->service_handle);
- }
- return @ibase_close($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];
- $result = @ibase_query($this->db_connect_id, $query);
- while ($void = @ibase_fetch_object($result, IBASE_TEXT))
- {
- // Take the time spent on parsing rows into account
- }
- @ibase_free_result($result);
- $splittime = explode(' ', microtime());
- $splittime = $splittime[0] + $splittime[1];
- $this->sql_report('record_fromcache', $query, $endtime, $splittime);
- break;
- }
- }
- }
- ?>