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415 lines
9.2 KiB
PHP
415 lines
9.2 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) 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('SQL_LAYER'))
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{
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define('SQL_LAYER', 'mysql');
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include($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
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/**
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* @package dbal
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* MySQL Database Abstraction Layer
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* Minimum Requirement is 3.23+/4.0+/4.1+
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*/
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class dbal_mysql extends dbal
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{
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function sql_connect($sqlserver, $sqluser, $sqlpassword, $database, $port = false, $persistency = false)
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{
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$this->persistency = $persistency;
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$this->user = $sqluser;
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$this->server = $sqlserver . (($port) ? ':' . $port : '');
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$this->dbname = $database;
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$this->db_connect_id = ($this->persistency) ? @mysql_pconnect($this->server, $this->user, $sqlpassword) : @mysql_connect($this->server, $this->user, $sqlpassword);
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if ($this->db_connect_id && $this->dbname != '')
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{
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if (@mysql_select_db($this->dbname))
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{
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return $this->db_connect_id;
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}
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}
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return $this->sql_error('');
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}
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//
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// Other base methods
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//
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function sql_close()
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{
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if (!$this->db_connect_id)
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{
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return false;
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}
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if (sizeof($this->open_queries))
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{
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foreach ($this->open_queries as $i_query_id => $query_id)
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{
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@mysql_free_result($query_id);
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}
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}
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return @mysql_close($this->db_connect_id);
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}
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function sql_transaction($status = 'begin')
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{
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switch ($status)
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{
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case 'begin':
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$result = @mysql_query('BEGIN', $this->db_connect_id);
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$this->transaction = true;
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break;
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case 'commit':
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$result = @mysql_query('COMMIT', $this->db_connect_id);
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$this->transaction = false;
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if (!$result)
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{
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@mysql_query('ROLLBACK', $this->db_connect_id);
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}
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break;
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case 'rollback':
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$result = @mysql_query('ROLLBACK', $this->db_connect_id);
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$this->transaction = false;
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break;
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default:
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$result = true;
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}
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return $result;
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}
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// Base query method
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function sql_query($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->query_result = ($cache_ttl && method_exists($cache, 'sql_load')) ? $cache->sql_load($query) : false;
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if (!$this->query_result)
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{
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$this->num_queries++;
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if (($this->query_result = @mysql_query($query, $this->db_connect_id)) === false)
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{
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$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, $cache_ttl);
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// mysql_free_result called within sql_save()
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}
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else if (strpos($query, 'SELECT') !== false && $this->query_result)
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{
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$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) ? $this->query_result : false;
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}
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function sql_query_limit($query, $total, $offset = 0, $cache_ttl = 0)
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{
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if ($query != '')
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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 " . ((!empty($offset)) ? $offset . ', ' . $total : $total);
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return $this->sql_query($query, $cache_ttl);
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}
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else
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{
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return false;
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}
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}
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// Other query methods
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//
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// NOTE :: Want to remove _ALL_ reliance on sql_numrows from core code ...
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// don't want this here by a middle Milestone
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function sql_numrows($query_id = false)
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{
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if (!$query_id)
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{
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$query_id = $this->query_result;
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}
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return ($query_id) ? @mysql_num_rows($query_id) : false;
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}
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function sql_affectedrows()
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{
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return ($this->db_connect_id) ? @mysql_affected_rows($this->db_connect_id) : false;
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}
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function sql_fetchrow($query_id = false)
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{
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global $cache;
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if (!$query_id)
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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 ($query_id) ? @mysql_fetch_assoc($query_id) : false;
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}
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function sql_fetchrowset($query_id = false)
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{
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if (!$query_id)
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{
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$query_id = $this->query_result;
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}
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if ($query_id)
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{
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unset($this->rowset[$query_id]);
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unset($this->row[$query_id]);
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$result = array();
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while ($this->rowset[$query_id] = $this->sql_fetchrow($query_id))
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{
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$result[] = $this->rowset[$query_id];
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}
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return $result;
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}
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return false;
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}
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function sql_fetchfield($field, $rownum = -1, $query_id = false)
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{
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if (!$query_id)
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{
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$query_id = $this->query_result;
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}
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if ($query_id)
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{
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if ($rownum > -1)
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{
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$result = @mysql_result($query_id, $rownum, $field);
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}
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else
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{
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if (empty($this->row[$query_id]) && empty($this->rowset[$query_id]))
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{
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if ($this->row[$query_id] = $this->sql_fetchrow($query_id))
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{
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$result = $this->row[$query_id][$field];
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}
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}
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else
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{
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if ($this->rowset[$query_id])
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{
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$result = $this->rowset[$query_id][$field];
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}
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elseif ($this->row[$query_id])
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{
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$result = $this->row[$query_id][$field];
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}
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}
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}
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return $result;
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}
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return false;
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}
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function sql_rowseek($rownum, $query_id = false)
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{
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if (!$query_id)
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{
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$query_id = $this->query_result;
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}
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return ($query_id) ? @mysql_data_seek($query_id, $rownum) : false;
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}
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function sql_nextid()
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{
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return ($this->db_connect_id) ? @mysql_insert_id($this->db_connect_id) : false;
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}
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function sql_freeresult($query_id = false)
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{
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if (!$query_id)
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{
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$query_id = $this->query_result;
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}
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if (isset($this->open_queries[(int) $query_id]))
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{
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unset($this->open_queries[(int) $query_id]);
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return @mysql_free_result($query_id);
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}
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return false;
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}
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function sql_escape($msg)
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{
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return mysql_escape_string($msg);
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}
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function db_sql_error()
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{
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return array(
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'message' => @mysql_error(),
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'code' => @mysql_errno()
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);
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}
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function _sql_report($mode, $query = '')
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{
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global $cache, $starttime, $phpbb_root_path;
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static $curtime, $query_hold, $html_hold;
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static $sql_report = '';
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static $cache_num_queries = 0;
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switch ($mode)
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{
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case 'start':
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$query_hold = $query;
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$html_hold = '';
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$explain_query = $query;
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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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elseif (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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if (preg_match('/^SELECT/', $explain_query))
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{
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$html_table = FALSE;
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if ($result = mysql_query("EXPLAIN $explain_query", $this->db_connect_id))
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{
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while ($row = mysql_fetch_assoc($result))
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{
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if (!$html_table && sizeof($row))
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{
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$html_table = TRUE;
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$html_hold .= '<table class="bg" width="100%" cellspacing="1" cellpadding="4" border="0" align="center"><tr>';
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foreach (array_keys($row) as $val)
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{
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$html_hold .= '<th nowrap="nowrap">' . (($val) ? ucwords(str_replace('_', ' ', $val)) : ' ') . '</th>';
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}
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$html_hold .= '</tr>';
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}
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$html_hold .= '<tr>';
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$class = 'row1';
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foreach (array_values($row) as $val)
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{
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$class = ($class == 'row1') ? 'row2' : 'row1';
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$html_hold .= '<td class="' . $class . '">' . (($val) ? $val : ' ') . '</td>';
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}
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$html_hold .= '</tr>';
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}
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}
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if ($html_table)
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{
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$html_hold .= '</table>';
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}
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}
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$curtime = explode(' ', microtime());
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$curtime = $curtime[0] + $curtime[1];
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break;
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case 'fromcache':
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$endtime = explode(' ', microtime());
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$endtime = $endtime[0] + $endtime[1];
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$result = mysql_query($query, $this->db_connect_id);
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while ($void = mysql_fetch_assoc($result))
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{
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// Take the time spent on parsing rows into account
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}
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$splittime = explode(' ', microtime());
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$splittime = $splittime[0] + $splittime[1];
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$time_cache = $endtime - $curtime;
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$time_db = $splittime - $endtime;
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$color = ($time_db > $time_cache) ? 'green' : 'red';
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$sql_report .= '<hr width="100%"/><br /><table class="bg" width="100%" cellspacing="1" cellpadding="4" border="0"><tr><th>Query results obtained from the cache</th></tr><tr><td class="row1"><textarea style="font-family:\'Courier New\',monospace;width:100%" rows="5">' . preg_replace('/\t(AND|OR)(\W)/', "\$1\$2", htmlspecialchars(preg_replace('/[\s]*[\n\r\t]+[\n\r\s\t]*/', "\n", $query))) . '</textarea></td></tr></table><p align="center">';
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$sql_report .= 'Before: ' . sprintf('%.5f', $curtime - $starttime) . 's | After: ' . sprintf('%.5f', $endtime - $starttime) . 's | Elapsed [cache]: <b style="color: ' . $color . '">' . sprintf('%.5f', ($time_cache)) . 's</b> | Elapsed [db]: <b>' . sprintf('%.5f', $time_db) . 's</b></p>';
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// Pad the start time to not interfere with page timing
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$starttime += $time_db;
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mysql_free_result($result);
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$cache_num_queries++;
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break;
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}
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}
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}
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} // if ... define
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?>
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