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SemanticScuttle/includes/db/postgres.php
mensonge d582054c77 import of scuttle 0.7.2 
git-svn-id: https://semanticscuttle.svn.sourceforge.net/svnroot/semanticscuttle/trunk@1 b3834d28-1941-0410-a4f8-b48e95affb8f
2007-12-12 16:29:16 +00:00

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PHP
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<?php
/**
*
* @package dbal_postgres
* @version $Id: postgres.php,v 1.2 2005/06/10 08:52:03 devalley Exp $
* @copyright (c) 2005 phpBB Group
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
*
*/
/**
* @ignore
*/
if (!defined('SQL_LAYER'))
{
define('SQL_LAYER', 'postgresql');
/**
* @package dbal_postgres
* PostgreSQL Database Abstraction Layer
* Minimum Requirement is Version 7.3+
*/
class sql_db
{
var $db_connect_id;
var $query_result;
var $return_on_error = false;
var $transaction = false;
var $sql_time = 0;
var $num_queries = 0;
var $open_queries = array();
function sql_connect($sqlserver, $sqluser, $sqlpassword, $database, $port = false, $persistency = false)
{
$this->connect_string = '';
if ($sqluser)
{
$this->connect_string .= "user=$sqluser ";
}
if ($sqlpassword)
{
$this->connect_string .= "password=$sqlpassword ";
}
if ($sqlserver)
{
if (ereg(":", $sqlserver))
{
list($sqlserver, $sqlport) = split(":", $sqlserver);
$this->connect_string .= "host=$sqlserver port=$sqlport ";
}
else
{
if ($sqlserver != "localhost")
{
$this->connect_string .= "host=$sqlserver ";
}
if ($port)
{
$this->connect_string .= "port=$port ";
}
}
}
if ($database)
{
$this->dbname = $database;
$this->connect_string .= "dbname=$database";
}
$this->persistency = $persistency;
$this->db_connect_id = ($this->persistency) ? @pg_pconnect($this->connect_string) : @pg_connect($this->connect_string);
return ($this->db_connect_id) ? $this->db_connect_id : $this->sql_error('');
}
//
// Other base methods
//
function sql_close()
{
if (!$this->db_connect_id)
{
return false;
}
if ($this->transaction)
{
@pg_exec($this->db_connect_id, 'COMMIT');
}
return @pg_close($this->db_connect_id);
}
function sql_return_on_error($fail = false)
{
$this->return_on_error = $fail;
}
function sql_num_queries()
{
return $this->num_queries;
}
function sql_transaction($status = 'begin')
{
switch ($status)
{
case 'begin':
$result = @pg_exec($this->db_connect_id, 'BEGIN');
$this->transaction = true;
break;
case 'commit':
$result = @pg_exec($this->db_connect_id, 'COMMIT');
$this->transaction = false;
if (!$result)
{
@pg_exec($this->db_connect_id, 'ROLLBACK');
}
break;
case 'rollback':
$result = @pg_exec($this->db_connect_id, 'ROLLBACK');
$this->transaction = false;
break;
default:
$result = true;
}
return $result;
}
// Base query method
function sql_query($query = '', $cache_ttl = 0)
{
if ($query != '')
{
global $cache;
// EXPLAIN only in extra debug mode
if (defined('DEBUG_EXTRA'))
{
$this->sql_report('start', $query);
}
$this->query_result = ($cache_ttl && method_exists($cache, 'sql_load')) ? $cache->sql_load($query) : false;
if (!$this->query_result)
{
$this->num_queries++;
$this->last_query_text = $query;
if (($this->query_result = @pg_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'))
{
$cache->sql_save($query, $this->query_result, $cache_ttl);
}
}
else if (defined('DEBUG_EXTRA'))
{
$this->sql_report('fromcache', $query);
}
}
else
{
return false;
}
return ($this->query_result) ? $this->query_result : false;
}
function sql_query_limit($query, $total, $offset = 0, $cache_ttl = 0)
{
if ($query != '')
{
$this->query_result = false;
// if $total is set to 0 we do not want to limit the number of rows
if ($total == 0)
{
$total = -1;
}
$query .= "\n LIMIT $total OFFSET $offset";
return $this->sql_query($query, $cache_ttl);
}
else
{
return false;
}
}
// Idea for this from Ikonboard
function sql_build_array($query, $assoc_ary = false)
{
if (!is_array($assoc_ary))
{
return false;
}
$fields = array();
$values = array();
if ($query == 'INSERT')
{
foreach ($assoc_ary as $key => $var)
{
$fields[] = $key;
if (is_null($var))
{
$values[] = 'NULL';
}
elseif (is_string($var))
{
$values[] = "'" . $this->sql_escape($var) . "'";
}
else
{
$values[] = (is_bool($var)) ? intval($var) : $var;
}
}
$query = ' (' . implode(', ', $fields) . ') VALUES (' . implode(', ', $values) . ')';
}
else if ($query == 'UPDATE' || $query == 'SELECT')
{
$values = array();
foreach ($assoc_ary as $key => $var)
{
if (is_null($var))
{
$values[] = "$key = NULL";
}
elseif (is_string($var))
{
$values[] = "$key = '" . $this->sql_escape($var) . "'";
}
else
{
$values[] = (is_bool($var)) ? "$key = " . intval($var) : "$key = $var";
}
}
$query = implode(($query == 'UPDATE') ? ', ' : ' AND ', $values);
}
return $query;
}
// Other query methods
//
// NOTE :: Want to remove _ALL_ reliance on sql_numrows from core code ...
// don't want this here by a middle Milestone
function sql_numrows($query_id = false)
{
if (!$query_id)
{
$query_id = $this->query_result;
}
return ($query_id) ? @pg_numrows($query_id) : false;
}
function sql_affectedrows($query_id = false)
{
if (!$query_id)
{
$query_id = $this->query_result;
}
return ($query_id) ? @pg_cmdtuples($query_id) : false;
}
function sql_fetchrow($query_id = false)
{
global $cache;
if (!$query_id)
{
$query_id = $this->query_result;
}
if (!isset($this->rownum[$query_id]))
{
$this->rownum[$query_id] = 0;
}
if (isset($cache->sql_rowset[$query_id]))
{
return $cache->sql_fetchrow($query_id);
}
$result = @pg_fetch_array($query_id, NULL, PGSQL_ASSOC);
if ($result)
{
$this->rownum[$query_id]++;
}
return $result;
}
function sql_fetchrowset($query_id = false)
{
if (!$query_id)
{
$query_id = $this->query_result;
}
$result = array();
if ($query_id)
{
unset($this->rowset[$query_id]);
unset($this->row[$query_id]);
$result = array();
while ($this->rowset[$query_id] = $this->sql_fetchrow($query_id))
{
$result[] = $this->rowset[$query_id];
}
return $result;
}
return false;
}
function sql_fetchfield($field, $rownum = -1, $query_id = false)
{
if (!$query_id)
{
$query_id = $this->query_result;
}
if ($query_id)
{
if ($rownum > -1)
{
if (@function_exists('pg_result_seek'))
{
@pg_result_seek($query_id, $rownum);
$row = @pg_fetch_assoc($query_id);
$result = isset($row[$field]) ? $row[$field] : false;
}
else
{
$this->sql_rowseek($offset, $query_id);
$row = $this->sql_fetchrow($query_id);
$result = isset($row[$field]) ? $row[$field] : false;
}
}
else
{
if (empty($this->row[$query_id]) && empty($this->rowset[$query_id]))
{
if ($this->sql_fetchrow($query_id))
{
$result = $this->row[$query_id][$field];
}
}
else
{
if ($this->rowset[$query_id])
{
$result = $this->rowset[$query_id][$field];
}
elseif ($this->row[$query_id])
{
$result = $this->row[$query_id][$field];
}
}
}
return $result;
}
return false;
}
function sql_rowseek($offset, $query_id = false)
{
if (!$query_id)
{
$query_id = $this->query_result;
}
if ($query_id)
{
if ($offset > -1)
{
if (@function_exists('pg_result_seek'))
{
@pg_result_seek($query_id, $rownum);
}
else
{
for ($i = $this->rownum[$query_id]; $i < $offset; $i++)
{
$this->sql_fetchrow($query_id);
}
}
return true;
}
else
{
return false;
}
}
return false;
}
function sql_nextid()
{
$query_id = $this->query_result;
if ($query_id && $this->last_query_text != '')
{
if (preg_match("/^INSERT[\t\n ]+INTO[\t\n ]+([a-z0-9\_\-]+)/is", $this->last_query_text, $tablename))
{
$query = "SELECT currval('" . $tablename[1] . "_id_seq') AS last_value";
$temp_q_id = @pg_exec($this->db_connect_id, $query);
if (!$temp_q_id)
{
return false;
}
$temp_result = @pg_fetch_array($temp_q_id, NULL, PGSQL_ASSOC);
return ($temp_result) ? $temp_result['last_value'] : false;
}
}
return false;
}
function sql_freeresult($query_id = false)
{
if (!$query_id)
{
$query_id = $this->query_result;
}
return (is_resource($query_id)) ? @pg_freeresult($query_id) : false;
}
function sql_escape($msg)
{
return str_replace("'", "''", str_replace('\\', '\\\\', $msg));
}
function sql_error($sql = '')
{
if (!$this->return_on_error)
{
$this_page = (isset($_SERVER['PHP_SELF']) && !empty($_SERVER['PHP_SELF'])) ? $_SERVER['PHP_SELF'] : $_ENV['PHP_SELF'];
$this_page .= '&' . ((isset($_SERVER['QUERY_STRING']) && !empty($_SERVER['QUERY_STRING'])) ? $_SERVER['QUERY_STRING'] : (isset($_ENV['QUERY_STRING']) ? $_ENV['QUERY_STRING'] : ''));
$message = '<u>SQL ERROR</u> [ ' . SQL_LAYER . ' ]<br /><br />' . @pg_errormessage() . '<br /><br /><u>CALLING PAGE</u><br /><br />' . htmlspecialchars($this_page) . (($sql != '') ? '<br /><br /><u>SQL</u><br /><br />' . $sql : '') . '<br />';
if ($this->transaction)
{
$this->sql_transaction('rollback');
}
trigger_error($message, E_USER_ERROR);
}
$result = array(
'message' => @pg_errormessage(),
'code' => ''
);
return $result;
}
function sql_report($mode, $query = '')
{
if (empty($_GET['explain']))
{
return;
}
global $cache, $starttime, $phpbb_root_path;
static $curtime, $query_hold, $html_hold;
static $sql_report = '';
static $cache_num_queries = 0;
if (!$query && !empty($query_hold))
{
$query = $query_hold;
}
switch ($mode)
{
case 'display':
if (!empty($cache))
{
$cache->unload();
}
$this->sql_close();
$mtime = explode(' ', microtime());
$totaltime = $mtime[0] + $mtime[1] - $starttime;
echo '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html; charset=iso-8869-1"><meta http-equiv="Content-Style-Type" content="text/css"><link rel="stylesheet" href="' . $phpbb_root_path . 'adm/subSilver.css" type="text/css"><style type="text/css">' . "\n";
echo 'th { background-image: url(\'' . $phpbb_root_path . 'adm/images/cellpic3.gif\') }' . "\n";
echo 'td.cat { background-image: url(\'' . $phpbb_root_path . 'adm/images/cellpic1.gif\') }' . "\n";
echo '</style><title>' . $msg_title . '</title></head><body>';
echo '<table width="100%" cellspacing="0" cellpadding="0" border="0"><tr><td><a href="' . htmlspecialchars(preg_replace('/&explain=([^&]*)/', '', $_SERVER['REQUEST_URI'])) . '"><img src="' . $phpbb_root_path . 'adm/images/header_left.jpg" width="200" height="60" alt="phpBB Logo" title="phpBB Logo" border="0"/></a></td><td width="100%" background="' . $phpbb_root_path . 'adm/images/header_bg.jpg" height="60" align="right" nowrap="nowrap"><span class="maintitle">SQL Report</span> &nbsp; &nbsp; &nbsp;</td></tr></table><br clear="all"/><table width="95%" cellspacing="1" cellpadding="4" border="0" align="center"><tr><td height="40" align="center" valign="middle"><b>Page generated in ' . round($totaltime, 4) . " seconds with {$this->num_queries} queries" . (($cache_num_queries) ? " + $cache_num_queries " . (($cache_num_queries == 1) ? 'query' : 'queries') . ' returning data from cache' : '') . '</b></td></tr><tr><td align="center" nowrap="nowrap">Time spent on MySQL queries: <b>' . round($this->sql_time, 5) . 's</b> | Time spent on PHP: <b>' . round($totaltime - $this->sql_time, 5) . 's</b></td></tr></table><table width="95%" cellspacing="1" cellpadding="4" border="0" align="center"><tr><td>';
echo $sql_report;
echo '</td></tr></table><br /></body></html>';
exit;
break;
case 'start':
$query_hold = $query;
$html_hold = '';
$curtime = explode(' ', microtime());
$curtime = $curtime[0] + $curtime[1];
break;
case 'fromcache':
$endtime = explode(' ', microtime());
$endtime = $endtime[0] + $endtime[1];
$result = @pg_exec($this->db_connect_id, $query);
while ($void = @pg_fetch_array($result, NULL, PGSQL_ASSOC))
{
// Take the time spent on parsing rows into account
}
$splittime = explode(' ', microtime());
$splittime = $splittime[0] + $splittime[1];
$time_cache = $endtime - $curtime;
$time_db = $splittime - $endtime;
$color = ($time_db > $time_cache) ? 'green' : 'red';
$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">';
$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>';
// Pad the start time to not interfere with page timing
$starttime += $time_db;
@pg_freeresult($result);
$cache_num_queries++;
break;
case 'stop':
$endtime = explode(' ', microtime());
$endtime = $endtime[0] + $endtime[1];
$sql_report .= '<hr width="100%"/><br /><table class="bg" width="100%" cellspacing="1" cellpadding="4" border="0"><tr><th>Query #' . $this->num_queries . '</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> ' . $html_hold . '<p align="center">';
if ($this->query_result)
{
if (preg_match('/^(UPDATE|DELETE|REPLACE)/', $query))
{
$sql_report .= "Affected rows: <b>" . $this->sql_affectedrows($this->query_result) . '</b> | ';
}
$sql_report .= 'Before: ' . sprintf('%.5f', $curtime - $starttime) . 's | After: ' . sprintf('%.5f', $endtime - $starttime) . 's | Elapsed: <b>' . sprintf('%.5f', $endtime - $curtime) . 's</b>';
}
else
{
$error = $this->sql_error();
$sql_report .= '<b style="color: red">FAILED</b> - ' . SQL_LAYER . ' Error ' . $error['code'] . ': ' . htmlspecialchars($error['message']);
}
$sql_report .= '</p>';
$this->sql_time += $endtime - $curtime;
break;
}
}
} // class ... db_sql
} // if ... defined
?>
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