6db359c622
Change "Piwigo - a PHP based picture gallery" into "Piwigo - a PHP based photo gallery" git-svn-id: http://piwigo.org/svn/trunk@8728 68402e56-0260-453c-a942-63ccdbb3a9ee
621 lines
No EOL
14 KiB
PHP
621 lines
No EOL
14 KiB
PHP
<?php
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// +-----------------------------------------------------------------------+
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// | Piwigo - a PHP based photo gallery |
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// +-----------------------------------------------------------------------+
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// | Copyright(C) 2008-2011 Piwigo Team http://piwigo.org |
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// | Copyright(C) 2003-2008 PhpWebGallery Team http://phpwebgallery.net |
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// | Copyright(C) 2002-2003 Pierrick LE GALL http://le-gall.net/pierrick |
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// +-----------------------------------------------------------------------+
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// | This program is free software; you can redistribute it and/or modify |
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// | it under the terms of the GNU General Public License as published by |
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// | the Free Software Foundation |
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// | |
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// | This program is distributed in the hope that it will be useful, but |
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// | WITHOUT ANY WARRANTY; without even the implied warranty of |
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// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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// | General Public License for more details. |
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// | |
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// | You should have received a copy of the GNU General Public License |
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// | along with this program; if not, write to the Free Software |
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// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
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// | USA. |
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// +-----------------------------------------------------------------------+
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define('REQUIRED_PGSQL_VERSION', '8.0');
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define('DB_ENGINE', 'PostgreSQL');
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define('DB_REGEX_OPERATOR', '~');
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define('DB_RANDOM_FUNCTION', 'RANDOM');
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/**
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*
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* simple functions
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*
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*/
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function pwg_db_connect($host, $user, $password, $database)
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{
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$connection_string = '';
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if (strpos($host,':') !== false)
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{
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list($host, $port) = explode(':', $host);
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}
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$connection_string = sprintf('host=%s', $host);
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if (!empty($port))
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{
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$connection_string .= sprintf(' port=%d', $port);
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}
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$connection_string .= sprintf(' user=%s password=%s dbname=%s',
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$user,
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$password,
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$database);
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$link = @pg_connect($connection_string);
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if (!$link)
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{
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throw new Exception("Can't connect to server");
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}
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else
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{
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return $link;
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}
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}
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function pwg_db_check_version()
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{
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$current_version = pwg_get_db_version();
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if (version_compare($current_version, REQUIRED_PGSQL_VERSION, '<'))
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{
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fatal_error(
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sprintf(
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'your database version is too old, you have "%s" and you need at least "%s"',
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$current_version,
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REQUIRED_PGSQL_VERSION
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)
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);
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}
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}
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function pwg_db_check_charset()
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{
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return true;
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}
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function pwg_get_db_version()
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{
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list($pg_version) = pwg_db_fetch_row(pwg_query('SHOW SERVER_VERSION;'));
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return $pg_version;
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}
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function pwg_query($query)
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{
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global $conf,$page,$debug,$t2;
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$replace_pattern = '`REPLACE INTO\s(\S*)\s*([^)]*\))\s*VALUES\(([^,]*),(.*)\)\s*`mi';
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$start = get_moment();
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if (preg_match($replace_pattern, $query, $matches)
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&& $matches[1]==SESSIONS_TABLE)
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{
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$select_query = '
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SELECT id FROM '.$matches[1].'
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WHERE id='.$matches[3];
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( $result = pg_query($select_query)) or die($query."\n<br>".pg_last_error());
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if (pwg_db_num_rows($result)==1)
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{
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$query = '
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UPDATE '.$matches[1].'
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SET expiration=now()
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WHERE id='.$matches[3];
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}
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else
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{
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$query = '
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INSERT INTO '.$matches[1].'
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'.$matches[2].' VALUES('.$matches[3].','.$matches[4].')';
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}
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( $result = pg_query($query)) or die($query."\n<br>".pg_last_error());
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}
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else
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{
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($result = pg_query($query)) or die($query."\n<br>".pg_last_error());
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}
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$time = get_moment() - $start;
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if (!isset($page['count_queries']))
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{
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$page['count_queries'] = 0;
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$page['queries_time'] = 0;
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}
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$page['count_queries']++;
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$page['queries_time']+= $time;
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if ($conf['show_queries'])
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{
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$output = '';
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$output.= '<pre>['.$page['count_queries'].'] ';
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$output.= "\n".$query;
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$output.= "\n".'(this query time : ';
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$output.= '<b>'.number_format($time, 3, '.', ' ').' s)</b>';
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$output.= "\n".'(total SQL time : ';
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$output.= number_format($page['queries_time'], 3, '.', ' ').' s)';
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$output.= "\n".'(total time : ';
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$output.= number_format( ($time+$start-$t2), 3, '.', ' ').' s)';
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if ( $result!=null and preg_match('/\s*SELECT\s+/i',$query) )
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{
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$output.= "\n".'(num rows : ';
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$output.= pwg_db_num_rows($result).' )';
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}
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elseif ( $result!=null
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and preg_match('/\s*INSERT|UPDATE|REPLACE|DELETE\s+/i',$query) )
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{
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$output.= "\n".'(affected rows : ';
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$output.= pwg_db_changes($result).' )';
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}
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$output.= "</pre>\n";
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$debug .= $output;
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}
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return $result;
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}
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function pwg_db_nextval($column, $table)
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{
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$query = '
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SELECT nextval(\''.$table.'_'.$column.'_seq\')';
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list($next) = pwg_db_fetch_row(pwg_query($query));
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return $next;
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}
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/**
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*
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* complex functions
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*
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*/
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function pwg_db_changes($result)
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{
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return pg_affected_rows($result);
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}
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function pwg_db_num_rows($result)
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{
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return pg_num_rows($result);
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}
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function pwg_db_fetch_assoc($result)
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{
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return pg_fetch_assoc($result);
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}
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function pwg_db_fetch_row($result)
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{
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return pg_fetch_row($result);
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}
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function pwg_db_fetch_object($result)
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{
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return pg_fetch_object($result);
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}
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function pwg_db_free_result($result)
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{
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return pg_free_result($result);
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}
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function pwg_db_real_escape_string($s)
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{
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return pg_escape_string($s);
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}
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function pwg_db_insert_id($table=null, $column='id')
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{
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$sequence = sprintf('%s_%s_seq', strtolower($table), $column);
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$query = '
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SELECT CURRVAL(\''.$sequence.'\');';
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list($id) = pwg_db_fetch_row(pwg_query($query));
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return $id;
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}
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/**
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*
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* complex functions
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*
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*/
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/**
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* creates an array based on a query, this function is a very common pattern
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* used here
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*
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* @param string $query
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* @param string $fieldname
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* @return array
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*/
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function array_from_query($query, $fieldname)
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{
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$array = array();
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$result = pwg_query($query);
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while ($row = pg_fetch_assoc($result))
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{
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array_push($array, $row[$fieldname]);
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}
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return $array;
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}
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define('MASS_UPDATES_SKIP_EMPTY', 1);
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/**
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* updates multiple lines in a table
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*
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* @param string table_name
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* @param array dbfields
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* @param array datas
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* @param int flags - if MASS_UPDATES_SKIP_EMPTY - empty values do not overwrite existing ones
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* @return void
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*/
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function mass_updates($tablename, $dbfields, $datas, $flags=0)
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{
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if (count($datas) == 0)
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return;
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if (count($datas) < 10)
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{
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foreach ($datas as $data)
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{
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$query = '
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UPDATE '.$tablename.'
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SET ';
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$is_first = true;
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foreach ($dbfields['update'] as $key)
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{
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$separator = $is_first ? '' : ",\n ";
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if (isset($data[$key]) and $data[$key] != '')
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{
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$query.= $separator.$key.' = \''.$data[$key].'\'';
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}
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else
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{
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if ($flags & MASS_UPDATES_SKIP_EMPTY )
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continue; // next field
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$query.= "$separator$key = NULL";
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}
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$is_first = false;
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}
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if (!$is_first)
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{// only if one field at least updated
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$query.= '
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WHERE ';
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$is_first = true;
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foreach ($dbfields['primary'] as $key)
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{
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if (!$is_first)
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{
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$query.= ' AND ';
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}
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if ( isset($data[$key]) )
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{
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$query.= $key.' = \''.$data[$key].'\'';
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}
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else
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{
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$query.= $key.' IS NULL';
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}
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$is_first = false;
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}
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pwg_query($query);
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}
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} // foreach update
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}
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else
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{
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$all_fields = array_merge($dbfields['primary'], $dbfields['update']);
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$temporary_tablename = $tablename.'_'.micro_seconds();
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$query = '
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CREATE TABLE '.$temporary_tablename.'
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AS SELECT * FROM '.$tablename.' WHERE 1=2';
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pwg_query($query);
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mass_inserts($temporary_tablename, $all_fields, $datas);
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if ( $flags & MASS_UPDATES_SKIP_EMPTY )
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$func_set = create_function('$s', 'return "$s = NULLIF(t2.$s, '.$tablename.'.$s)";');
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else
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$func_set = create_function('$s', 'return "$s = t2.$s";');
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// update of images table by joining with temporary table
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$query = '
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UPDATE '.$tablename.'
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SET '.
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implode(
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"\n , ",
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array_map($func_set, $dbfields['update'])
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).'
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FROM '.$temporary_tablename.' AS t2
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WHERE '.
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implode(
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"\n AND ",
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array_map(
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create_function('$s', 'return "'.$tablename.'.$s = t2.$s";'),
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$dbfields['primary']
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)
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);
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pwg_query($query);
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$query = '
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DROP TABLE '.$temporary_tablename;
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pwg_query($query);
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}
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}
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/**
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* inserts multiple lines in a table
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*
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* @param string table_name
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* @param array dbfields
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* @param array inserts
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* @return void
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*/
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function mass_inserts($table_name, $dbfields, $datas)
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{
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if (count($datas) != 0)
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{
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$first = true;
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$packet_size = 16777216;
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$packet_size = $packet_size - 2000; // The last list of values MUST not exceed 2000 character*/
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$query = '';
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foreach ($datas as $insert)
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{
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if (strlen($query) >= $packet_size)
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{
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pwg_query($query);
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$first = true;
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}
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if ($first)
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{
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$query = '
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INSERT INTO '.$table_name.'
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('.implode(',', $dbfields).')
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VALUES';
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$first = false;
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}
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else
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{
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$query .= '
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, ';
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}
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$query .= '(';
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foreach ($dbfields as $field_id => $dbfield)
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{
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if ($field_id > 0)
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{
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$query .= ',';
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}
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if (!isset($insert[$dbfield]) or $insert[$dbfield] === '')
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{
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$query .= 'NULL';
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}
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else
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{
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$query .= "'".$insert[$dbfield]."'";
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}
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}
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$query .= ')';
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}
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pwg_query($query);
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}
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}
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/**
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* Do maintenance on all PWG tables
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*
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* @return none
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*/
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function do_maintenance_all_tables()
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{
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global $prefixeTable, $page;
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$all_tables = array();
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// List all tables
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$query = 'SELECT tablename FROM pg_tables
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WHERE tablename like \''.$prefixeTable.'%\'';
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$all_tables = array_from_query($query, 'tablename');
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// Optimize all tables
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foreach ($all_tables as $table)
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{
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$query = 'VACUUM FULL '.$table;
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pwg_query($query);
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}
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array_push($page['infos'],
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l10n('All optimizations have been successfully completed.')
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);
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}
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function pwg_db_concat($array)
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{
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return implode($array, ' || ');
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}
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function pwg_db_concat_ws($array, $separator)
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{
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return implode($array, ' || \''.$separator.'\' || ');
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}
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function pwg_db_cast_to_text($string)
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{
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return 'CAST('.$string.' AS TEXT)';
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}
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|
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/**
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* returns an array containing the possible values of an enum field
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*
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* @param string tablename
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* @param string fieldname
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*/
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function get_enums($table, $field)
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{
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$typname = preg_replace('/'.$GLOBALS['prefixeTable'].'/', '', $table);
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$typname .= '_' . $field;
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$query = 'SELECT
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enumlabel FROM pg_enum JOIN pg_type
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ON pg_enum.enumtypid=pg_type.oid
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WHERE typname=\''.$typname.'\'
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';
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$result = pwg_query($query);
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while ($row = pwg_db_fetch_assoc($result))
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{
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$options[] = $row['enumlabel'];
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}
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return $options;
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}
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|
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// get_boolean transforms a string to a boolean value. If the string is
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|
// "false" (case insensitive), then the boolean value false is returned. In
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// any other case, true is returned.
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function get_boolean( $string )
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|
{
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$boolean = true;
|
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if ('f' == $string || 'false' == $string)
|
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{
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$boolean = false;
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}
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return $boolean;
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}
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|
|
|
/**
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|
* returns boolean string 'true' or 'false' if the given var is boolean
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|
*
|
|
* @param mixed $var
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* @return mixed
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*/
|
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function boolean_to_string($var)
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{
|
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if (is_bool($var))
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{
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return $var ? 'true' : 'false';
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}
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elseif ($var=='t' || $var=='f')
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{
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return ($var=='t') ? 'true' : 'false';
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}
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else
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|
{
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return $var;
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}
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}
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|
|
/**
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|
*
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* interval and date functions
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|
*
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|
*/
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|
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function pwg_db_get_recent_period_expression($period, $date='CURRENT_DATE')
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|
{
|
|
if ($date!='CURRENT_DATE')
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{
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|
$date = '\''.$date.'\'::date';
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|
}
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return '('.$date.' - \''.$period.' DAY\'::interval)::date';
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}
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function pwg_db_get_recent_period($period, $date='CURRENT_DATE')
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{
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$query = 'select '.pwg_db_get_recent_period_expression($period, $date);
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list($d) = pwg_db_fetch_row(pwg_query($query));
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return $d;
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}
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function pwg_db_get_flood_period_expression($seconds)
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{
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return 'now() - \''.$seconds.' SECOND\'::interval';
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}
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|
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function pwg_db_get_hour($date)
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{
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return 'EXTRACT(HOUR FROM '.$date.')';
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|
}
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function pwg_db_get_date_YYYYMM($date)
|
|
{
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return 'TO_CHAR('.$date.', \'YYYYMM\')';
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}
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function pwg_db_get_date_MMDD($date)
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{
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return 'TO_CHAR('.$date.', \'MMDD\')';
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}
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function pwg_db_get_year($date)
|
|
{
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return 'EXTRACT(YEAR FROM '.$date.')';
|
|
}
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|
|
|
function pwg_db_get_month($date)
|
|
{
|
|
return 'EXTRACT(MONTH FROM '.$date.')';
|
|
}
|
|
|
|
function pwg_db_get_week($date, $mode=null)
|
|
{
|
|
return 'EXTRACT(WEEK FROM '.$date.')';
|
|
}
|
|
|
|
function pwg_db_get_dayofmonth($date)
|
|
{
|
|
return 'EXTRACT(DAY FROM '.$date.')';
|
|
}
|
|
|
|
function pwg_db_get_dayofweek($date)
|
|
{
|
|
return 'EXTRACT(DOW FROM '.$date.')::INTEGER - 1';
|
|
}
|
|
|
|
function pwg_db_get_weekday($date)
|
|
{
|
|
return 'EXTRACT(ISODOW FROM '.$date.')::INTEGER - 1';
|
|
}
|
|
|
|
function pwg_db_date_to_ts($date)
|
|
{
|
|
return 'EXTRACT(EPOCH FROM '.$date.')';
|
|
}
|
|
|
|
// my_error returns (or send to standard output) the message concerning the
|
|
// error occured for the last pgsql query.
|
|
function my_error($header, $die)
|
|
{
|
|
$error = '[pgsql error]'.pg_last_error()."\n";
|
|
$error .= $header;
|
|
|
|
if ($die)
|
|
{
|
|
fatal_error($error);
|
|
}
|
|
echo("<pre>");
|
|
trigger_error($error, E_USER_WARNING);
|
|
echo("</pre>");
|
|
}
|
|
|
|
|
|
?>
|