".pg_last_error());
if (pwg_db_num_rows($result)==1)
{
$query = '
UPDATE '.$matches[1].'
SET expiration=now()
WHERE id='.$matches[3];
}
else
{
$query = '
INSERT INTO '.$matches[1].'
'.$matches[2].' VALUES('.$matches[3].','.$matches[4].')';
}
( $result = pg_query($query)) or die($query."\n
".pg_last_error());
}
elseif (preg_match($select_distinct_pattern, $query, $matches))
{
$select_fields_string='';
$distinct_fields_string='';
$orderby_fields_string='';
foreach (preg_split( '/\s*,\s*/', $matches[1]) as $field)
{
$split_field = preg_split( '/\s*AS\s*/i', $field);
if (isset($split_field[1]))
{
$distinct_fields[ $split_field[1] ] = $field;
}
else
{
$distinct_fields[ $field ] = $field;
}
}
foreach (preg_split( '/\s*,\s*/', $matches[3]) as $field)
{
$kv = preg_split( '/\s+/', $field );
$orderby_fields[ $kv[0] ] = $kv[1];
}
foreach ($distinct_fields as $as_field => $field)
{
if ($distinct_fields_string)
{
$distinct_fields_string=$distinct_fields_string.', ';
}
$distinct_fields_string=$distinct_fields_string.$as_field;
if ($select_fields_string)
{
$select_fields_string=$select_fields_string.', ';
}
$select_fields_string=$select_fields_string.$field;
if ($orderby_fields_string)
{
$orderby_fields_string=$orderby_fields_string.', ';
}
$orderby_fields_string=$orderby_fields_string.$as_field.' ';
if (isset($orderby_fields[$as_field]))
{
$orderby_fields_string=$orderby_fields_string.$orderby_fields[$as_field];
unset($orderby_fields[$as_field]);
}
else
{
$orderby_fields_string=$orderby_fields_string.'ASC';
}
}
foreach ($orderby_fields as $field => $order)
{
$orderby_fields_string=$orderby_fields_string.', '.$field.' '.$order;
}
$query = '
SELECT DISTINCT ON ('.$distinct_fields_string.') '.$select_fields_string.'
'.$matches[2].'
ORDER BY '.$orderby_fields_string;
($result = pg_query($query)) or die($query."\n
".pg_last_error());
}
else
{
($result = pg_query($query)) or die($query."\n
".pg_last_error());
}
$time = get_moment() - $start;
if (!isset($page['count_queries']))
{
$page['count_queries'] = 0;
$page['queries_time'] = 0;
}
$page['count_queries']++;
$page['queries_time']+= $time;
if ($conf['show_queries'])
{
$output = '';
$output.= '['.$page['count_queries'].'] ';
$output.= "\n".$query;
$output.= "\n".'(this query time : ';
$output.= ''.number_format($time, 3, '.', ' ').' s)';
$output.= "\n".'(total SQL time : ';
$output.= number_format($page['queries_time'], 3, '.', ' ').' s)';
$output.= "\n".'(total time : ';
$output.= number_format( ($time+$start-$t2), 3, '.', ' ').' s)';
if ( $result!=null and preg_match('/\s*SELECT\s+/i',$query) )
{
$output.= "\n".'(num rows : ';
$output.= pwg_db_num_rows($result).' )';
}
elseif ( $result!=null
and preg_match('/\s*INSERT|UPDATE|REPLACE|DELETE\s+/i',$query) )
{
$output.= "\n".'(affected rows : ';
$output.= pwg_db_changes($result).' )';
}
$output.= "\n";
$debug .= $output;
}
return $result;
}
function pwg_db_nextval($column, $table)
{
$query = '
SELECT nextval(\''.$table.'_'.$column.'_seq\')';
list($next) = pwg_db_fetch_row(pwg_query($query));
return $next;
}
/**
*
* complex functions
*
*/
function pwg_db_changes($result)
{
return pg_affected_rows($result);
}
function pwg_db_num_rows($result)
{
return pg_num_rows($result);
}
function pwg_db_fetch_assoc($result)
{
return pg_fetch_assoc($result);
}
function pwg_db_fetch_row($result)
{
return pg_fetch_row($result);
}
function pwg_db_fetch_object($result)
{
return pg_fetch_object($result);
}
function pwg_db_free_result($result)
{
return pg_free_result($result);
}
function pwg_db_real_escape_string($s)
{
return pg_escape_string($s);
}
function pwg_db_insert_id($table=null, $column='id')
{
$sequence = sprintf('%s_%s_seq', strtolower($table), $column);
$query = '
SELECT CURRVAL(\''.$sequence.'\');';
list($id) = pwg_db_fetch_row(pwg_query($query));
return $id;
}
/**
*
* complex functions
*
*/
/**
* creates an array based on a query, this function is a very common pattern
* used here
*
* @param string $query
* @param string $fieldname
* @return array
*/
function array_from_query($query, $fieldname)
{
$array = array();
$result = pwg_query($query);
while ($row = pg_fetch_assoc($result))
{
array_push($array, $row[$fieldname]);
}
return $array;
}
define('MASS_UPDATES_SKIP_EMPTY', 1);
/**
* updates multiple lines in a table
*
* @param string table_name
* @param array dbfields
* @param array datas
* @param int flags - if MASS_UPDATES_SKIP_EMPTY - empty values do not overwrite existing ones
* @return void
*/
function mass_updates($tablename, $dbfields, $datas, $flags=0)
{
if (count($datas) == 0)
return;
if (count($datas) < 10)
{
foreach ($datas as $data)
{
$query = '
UPDATE '.$tablename.'
SET ';
$is_first = true;
foreach ($dbfields['update'] as $key)
{
$separator = $is_first ? '' : ",\n ";
if (isset($data[$key]) and $data[$key] != '')
{
$query.= $separator.$key.' = \''.$data[$key].'\'';
}
else
{
if ($flags & MASS_UPDATES_SKIP_EMPTY )
continue; // next field
$query.= "$separator$key = NULL";
}
$is_first = false;
}
if (!$is_first)
{// only if one field at least updated
$query.= '
WHERE ';
$is_first = true;
foreach ($dbfields['primary'] as $key)
{
if (!$is_first)
{
$query.= ' AND ';
}
if ( isset($data[$key]) )
{
$query.= $key.' = \''.$data[$key].'\'';
}
else
{
$query.= $key.' IS NULL';
}
$is_first = false;
}
pwg_query($query);
}
} // foreach update
}
else
{
$all_fields = array_merge($dbfields['primary'], $dbfields['update']);
$temporary_tablename = $tablename.'_'.micro_seconds();
$query = '
CREATE TABLE '.$temporary_tablename.'
AS SELECT * FROM '.$tablename.' WHERE 1=2';
pwg_query($query);
mass_inserts($temporary_tablename, $all_fields, $datas);
if ( $flags & MASS_UPDATES_SKIP_EMPTY )
$func_set = create_function('$s', 'return "$s = NULLIF(t2.$s, '.$tablename.'.$s)";');
else
$func_set = create_function('$s', 'return "$s = t2.$s";');
// update of images table by joining with temporary table
$query = '
UPDATE '.$tablename.'
SET '.
implode(
"\n , ",
array_map($func_set, $dbfields['update'])
).'
FROM '.$temporary_tablename.' AS t2
WHERE '.
implode(
"\n AND ",
array_map(
create_function('$s', 'return "'.$tablename.'.$s = t2.$s";'),
$dbfields['primary']
)
);
pwg_query($query);
$query = '
DROP TABLE '.$temporary_tablename;
pwg_query($query);
}
}
/**
* inserts multiple lines in a table
*
* @param string table_name
* @param array dbfields
* @param array inserts
* @return void
*/
function mass_inserts($table_name, $dbfields, $datas)
{
if (count($datas) != 0)
{
$first = true;
$packet_size = 16777216;
$packet_size = $packet_size - 2000; // The last list of values MUST not exceed 2000 character*/
$query = '';
foreach ($datas as $insert)
{
if (strlen($query) >= $packet_size)
{
pwg_query($query);
$first = true;
}
if ($first)
{
$query = '
INSERT INTO '.$table_name.'
('.implode(',', $dbfields).')
VALUES';
$first = false;
}
else
{
$query .= '
, ';
}
$query .= '(';
foreach ($dbfields as $field_id => $dbfield)
{
if ($field_id > 0)
{
$query .= ',';
}
if (!isset($insert[$dbfield]) or $insert[$dbfield] === '')
{
$query .= 'NULL';
}
else
{
$query .= "'".$insert[$dbfield]."'";
}
}
$query .= ')';
}
pwg_query($query);
}
}
/**
* Do maintenance on all PWG tables
*
* @return none
*/
function do_maintenance_all_tables()
{
global $prefixeTable, $page;
$all_tables = array();
// List all tables
$query = 'SELECT tablename FROM pg_tables
WHERE tablename like \''.$prefixeTable.'%\'';
$all_tables = array_from_query($query, 'tablename');
// Optimize all tables
foreach ($all_tables as $table)
{
$query = 'VACUUM FULL '.$table;
pwg_query($query);
}
array_push($page['infos'],
l10n('All optimizations have been successfully completed.')
);
}
function pwg_db_concat($array)
{
return implode($array, ' || ');
}
function pwg_db_concat_ws($array, $separator)
{
return implode($array, ' || \''.$separator.'\' || ');
}
function pwg_db_cast_to_text($string)
{
return 'CAST('.$string.' AS TEXT)';
}
/**
* returns an array containing the possible values of an enum field
*
* @param string tablename
* @param string fieldname
*/
function get_enums($table, $field)
{
$typname = preg_replace('/'.$GLOBALS['prefixeTable'].'/', '', $table);
$typname .= '_' . $field;
$query = 'SELECT
enumlabel FROM pg_enum JOIN pg_type
ON pg_enum.enumtypid=pg_type.oid
WHERE typname=\''.$typname.'\'
';
$result = pwg_query($query);
while ($row = pwg_db_fetch_assoc($result))
{
$options[] = $row['enumlabel'];
}
return $options;
}
// get_boolean transforms a string to a boolean value. If the string is
// "false" (case insensitive), then the boolean value false is returned. In
// any other case, true is returned.
function get_boolean( $string )
{
$boolean = true;
if ('f' == $string || 'false' == $string)
{
$boolean = false;
}
return $boolean;
}
/**
* returns boolean string 'true' or 'false' if the given var is boolean
*
* @param mixed $var
* @return mixed
*/
function boolean_to_string($var)
{
if (is_bool($var))
{
return $var ? 'true' : 'false';
}
elseif ($var=='t' || $var=='f')
{
return ($var=='t') ? 'true' : 'false';
}
else
{
return $var;
}
}
/**
*
* interval and date functions
*
*/
function pwg_db_get_recent_period_expression($period, $date='CURRENT_DATE')
{
if ($date!='CURRENT_DATE')
{
$date = '\''.$date.'\'::date';
}
return '('.$date.' - \''.$period.' DAY\'::interval)::date';
}
function pwg_db_get_recent_period($period, $date='CURRENT_DATE')
{
$query = 'select '.pwg_db_get_recent_period_expression($period, $date);
list($d) = pwg_db_fetch_row(pwg_query($query));
return $d;
}
function pwg_db_get_flood_period_expression($seconds)
{
return 'now() - \''.$seconds.' SECOND\'::interval';
}
function pwg_db_get_hour($date)
{
return 'EXTRACT(HOUR FROM '.$date.')';
}
function pwg_db_get_date_YYYYMM($date)
{
return 'TO_CHAR('.$date.', \'YYYYMM\')';
}
function pwg_db_get_date_MMDD($date)
{
return 'TO_CHAR('.$date.', \'MMDD\')';
}
function pwg_db_get_year($date)
{
return 'EXTRACT(YEAR FROM '.$date.')';
}
function pwg_db_get_month($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($error);
}
echo("");
trigger_error($error, E_USER_WARNING);
echo("");
}
?>