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443
by dcoles
Added Forum application along with unmodifed version of phpBB3 "Olympus" 3.0.0 |
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<?php
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/**
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*
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* @package dbal
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* @version $Id: postgres.php,v 1.48 2007/10/05 14:36:32 acydburn Exp $
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* @copyright (c) 2005 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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*/
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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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* PostgreSQL Database Abstraction Layer
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* Minimum Requirement is Version 7.3+
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* @package dbal
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*/
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class dbal_postgres extends dbal |
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{
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var $last_query_text = ''; |
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var $pgsql_version; |
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/**
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* Connect to server
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*/
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function sql_connect($sqlserver, $sqluser, $sqlpassword, $database, $port = false, $persistency = false, $new_link = false) |
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{
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$connect_string = ''; |
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if ($sqluser) |
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{
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$connect_string .= "user=$sqluser "; |
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}
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if ($sqlpassword) |
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{
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$connect_string .= "password=$sqlpassword "; |
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}
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if ($sqlserver) |
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{
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if (strpos($sqlserver, ':') !== false) |
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{
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list($sqlserver, $port) = explode(':', $sqlserver); |
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}
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if ($sqlserver !== 'localhost') |
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{
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$connect_string .= "host=$sqlserver "; |
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}
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if ($port) |
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{
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$connect_string .= "port=$port "; |
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}
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}
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$schema = ''; |
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if ($database) |
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{
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$this->dbname = $database; |
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if (strpos($database, '.') !== false) |
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{
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list($database, $schema) = explode('.', $database); |
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}
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$connect_string .= "dbname=$database"; |
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}
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$this->persistency = $persistency; |
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$this->db_connect_id = ($this->persistency) ? @pg_pconnect($connect_string, $new_link) : @pg_connect($connect_string, $new_link); |
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if ($this->db_connect_id) |
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{
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// determine what version of PostgreSQL is running, we can be more efficient if they are running 8.2+
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if (version_compare(PHP_VERSION, '5.0.0', '>=')) |
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{
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$this->pgsql_version = @pg_parameter_status($this->db_connect_id, 'server_version'); |
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}
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else
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{
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$query_id = @pg_query($this->db_connect_id, 'SELECT VERSION()'); |
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$row = @pg_fetch_assoc($query_id, null); |
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@pg_free_result($query_id); |
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if (!empty($row['version'])) |
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{
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$this->pgsql_version = substr($row['version'], 10); |
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}
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}
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if (!empty($this->pgsql_version) && $this->pgsql_version[0] >= '8' && $this->pgsql_version[2] >= '2') |
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{
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$this->multi_insert = true; |
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}
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if ($schema !== '') |
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{
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@pg_query($this->db_connect_id, 'SET search_path TO ' . $schema); |
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}
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return $this->db_connect_id; |
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}
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return $this->sql_error(''); |
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}
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/**
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* Version information about used database
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*/
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function sql_server_info() |
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{
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return 'PostgreSQL ' . $this->pgsql_version; |
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}
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/**
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* SQL Transaction
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* @access private
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*/
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function _sql_transaction($status = 'begin') |
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{
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switch ($status) |
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{
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case 'begin': |
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return @pg_query($this->db_connect_id, 'BEGIN'); |
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break; |
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case 'commit': |
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return @pg_query($this->db_connect_id, 'COMMIT'); |
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break; |
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case 'rollback': |
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return @pg_query($this->db_connect_id, 'ROLLBACK'); |
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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 = @pg_query($this->db_connect_id, $query)) === false) |
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{
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$this->sql_error($query); |
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}
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if (defined('DEBUG_EXTRA')) |
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{
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$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) ? $this->query_result : false; |
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}
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/**
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* Build db-specific query data
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* @access private
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*/
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function _sql_custom_build($stage, $data) |
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{
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return $data; |
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}
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/**
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* Build LIMIT query
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*/
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function _sql_query_limit($query, $total, $offset = 0, $cache_ttl = 0) |
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{
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$this->query_result = false; |
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// if $total is set to 0 we do not want to limit the number of rows
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if ($total == 0) |
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{
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$total = -1; |
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}
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$query .= "\n LIMIT $total OFFSET $offset"; |
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return $this->sql_query($query, $cache_ttl); |
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}
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/**
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* Return number of affected rows
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*/
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function sql_affectedrows() |
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{
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return ($this->query_result) ? @pg_affected_rows($this->query_result) : false; |
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}
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/**
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* Fetch current row
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*/
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function sql_fetchrow($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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return ($query_id !== false) ? @pg_fetch_assoc($query_id, null) : false; |
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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 $cache; |
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if ($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 $cache->sql_rowseek($rownum, $query_id); |
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}
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return ($query_id !== false) ? @pg_result_seek($query_id, $rownum) : false; |
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}
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/**
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* Get last inserted id after insert statement
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*/
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function sql_nextid() |
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{
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$query_id = $this->query_result; |
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if ($query_id !== false && $this->last_query_text != '') |
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{
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if (preg_match("/^INSERT[\t\n ]+INTO[\t\n ]+([a-z0-9\_\-]+)/is", $this->last_query_text, $tablename)) |
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{
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$query = "SELECT currval('" . $tablename[1] . "_seq') AS last_value"; |
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$temp_q_id = @pg_query($this->db_connect_id, $query); |
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if (!$temp_q_id) |
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{
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return false; |
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}
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$temp_result = @pg_fetch_assoc($temp_q_id, NULL); |
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@pg_free_result($query_id); |
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return ($temp_result) ? $temp_result['last_value'] : false; |
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}
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}
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return false; |
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}
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/**
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* Free sql result
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*/
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function sql_freeresult($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[(int) $query_id])) |
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{
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unset($this->open_queries[(int) $query_id]); |
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return @pg_free_result($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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* Note: Do not use for bytea values if we may use them at a later stage
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*/
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function sql_escape($msg) |
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{
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return @pg_escape_string($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 $expression; |
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}
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/**
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* return sql error array
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* @access private
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*/
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function _sql_error() |
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{
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return array( |
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'message' => (!$this->db_connect_id) ? @pg_last_error() : @pg_last_error($this->db_connect_id), |
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'code' => '' |
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);
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}
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/**
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* Close sql connection
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* @access private
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*/
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function _sql_close() |
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{
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return @pg_close($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, $query = '') |
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383 |
{
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384 |
switch ($mode) |
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{
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386 |
case 'start': |
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387 |
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388 |
$explain_query = $query; |
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389 |
if (preg_match('/UPDATE ([a-z0-9_]+).*?WHERE(.*)/s', $query, $m)) |
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{
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$explain_query = 'SELECT * FROM ' . $m[1] . ' WHERE ' . $m[2]; |
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}
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else if (preg_match('/DELETE FROM ([a-z0-9_]+).*?WHERE(.*)/s', $query, $m)) |
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{
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$explain_query = 'SELECT * FROM ' . $m[1] . ' WHERE ' . $m[2]; |
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}
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398 |
if (preg_match('/^SELECT/', $explain_query)) |
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399 |
{
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$html_table = false; |
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401 |
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402 |
if ($result = @pg_query($this->db_connect_id, "EXPLAIN $explain_query")) |
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403 |
{
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404 |
while ($row = @pg_fetch_assoc($result, NULL)) |
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405 |
{
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406 |
$html_table = $this->sql_report('add_select_row', $query, $html_table, $row); |
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407 |
}
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408 |
}
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409 |
@pg_free_result($result); |
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410 |
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411 |
if ($html_table) |
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412 |
{
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413 |
$this->html_hold .= '</table>'; |
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414 |
}
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415 |
}
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416 |
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417 |
break; |
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418 |
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419 |
case 'fromcache': |
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420 |
$endtime = explode(' ', microtime()); |
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421 |
$endtime = $endtime[0] + $endtime[1]; |
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422 |
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423 |
$result = @pg_query($this->db_connect_id, $query); |
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424 |
while ($void = @pg_fetch_assoc($result, NULL)) |
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425 |
{
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426 |
// Take the time spent on parsing rows into account
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427 |
}
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428 |
@pg_free_result($result); |
|
429 |
||
430 |
$splittime = explode(' ', microtime()); |
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431 |
$splittime = $splittime[0] + $splittime[1]; |
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432 |
||
433 |
$this->sql_report('record_fromcache', $query, $endtime, $splittime); |
|
434 |
||
435 |
break; |
|
436 |
}
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437 |
}
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|
438 |
}
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|
439 |
||
440 |
?>
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