sqliteCreateFunction('now', 'pwg_now', 0); $link->sqliteCreateFunction('unix_timestamp', 'pwg_unix_timestamp', 0); $link->sqliteCreateFunction('md5', 'md5', 1); $link->sqliteCreateFunction('if', 'pwg_if', 3); $link->sqliteCreateFunction('regexp', 'pwg_regexp', 2); return $link; } function pwg_db_check_version() { $current_version = pwg_get_db_version(); if (version_compare($current_version, REQUIRED_PDO_SQLITE_VERSION, '<')) { fatal_error( sprintf( 'your database version is too old, you have "%s" and you need at least "%s"', $current_version, REQUIRED_PDO_SQLITE_VERSION ) ); } } function pwg_db_check_charset() { return true; } function pwg_get_db_version() { global $pwg_db_link; return $pwg_db_link->getAttribute(PDO::ATTR_SERVER_VERSION); } function pwg_query($query) { global $conf,$page,$debug,$t2,$pwg_db_link; $start = get_moment(); $truncate_pattern = '`truncate(.*)`i'; $insert_pattern = '`(INSERT INTO [^)]*\)\s*VALUES)(\([^)]*\))\s*,\s*(.*)`mi'; if (preg_match($truncate_pattern, $query, $matches)) { $query = str_replace('TRUNCATE TABLE', 'DELETE FROM', $query); $truncate_query = true; ($result = $pwg_db_link->exec($query)) or die($query."\n
".$pwg_db_link->errorInfo()); } elseif (preg_match($insert_pattern, $query, $matches)) { $base_query = substr($query, 0, strlen($matches[1])+1); $values_pattern = '`\)\s*,\s*\(`'; $values = preg_split($values_pattern, substr($query, strlen($matches[1])+1)); $values[0] = substr($values[0], 1); $values[count($values)-1] = substr($values[count($values)-1], 0, strlen($values[count($values)-1])-1 ); for ($n=0;$nquery($query)) or die($query."\n
".$pwg_db_link->lastErrorMsg()); } } else { ($result = $pwg_db_link->query($query)) or die($query."\n
".$pwg_db_link->errorInfo()); } $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) 
      and !isset($truncate_query))
    {
      $output.= "\n".'(affected rows   : ';
      $output.= pwg_db_changes($result).' )';
    }
    $output.= "
\n"; $debug .= $output; } return $result; } function pwg_db_nextval($column, $table) { $query = ' SELECT MAX('.$column.')+1 FROM '.$table; list($next) = pwg_db_fetch_row(pwg_query($query)); if (is_null($next)) { $next = 1; } return $next; } /** * * complex functions * */ function pwg_db_changes(PDOStatement $result=null) { return $result->rowCount(); } function pwg_db_num_rows(PDOStatement $result) { return $result->rowCount(); } function pwg_db_fetch_assoc($result) { return $result->fetch(PDO::FETCH_ASSOC); } function pwg_db_fetch_row($result) { return $result->fetch(PDO::FETCH_NUM); } function pwg_db_fetch_object($result) { return $result; } function pwg_db_free_result($result) { } function pwg_db_real_escape_string($s) { global $pwg_db_link; return trim($pwg_db_link->quote($s), "'"); } function pwg_db_insert_id($table=null, $column='id') { global $pwg_db_link; return $pwg_db_link->lastInsertRowID(); } /** * * 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 ($row = pwg_db_fetch_assoc($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; 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); } } } /** * 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 $query = 'SELECT name FROM SQLITE_MASTER WHERE name LIKE \''.$prefixeTable.'%\''; $all_tables = array_from_query($query, 'name'); foreach ($all_tables as $table_name) { $query = 'VACUUM '.$table_name.';'; $result = pwg_query($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) { $glue = sprintf(' || \'%s\' || ', $separator); return implode($array, $glue); } function pwg_db_cast_to_text($string) { return $string; } /** * returns an array containing the possible values of an enum field * * @param string tablename * @param string fieldname */ function get_enums($table, $field) { $Enums['categories']['status'] = array('public', 'private'); $Enums['history']['section'] = array('categories','tags','search','list','favorites','most_visited','best_rated','recent_pics','recent_cats'); $Enums['user_infos']['status'] = array('webmaster','admin','normal','generic','guest'); $Enums['image']['type'] = array('picture','high','other'); $Enums['plugins']['state'] = array('active', 'inactive'); $Enums['user_cache_image']['access_type'] = array('NOT IN','IN'); $table = str_replace($GLOBALS['prefixeTable'], '', $table); if (isset($Enums[$table][$field])) { return $Enums[$table][$field]; } else { return array(); } } // 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'; } else { return $var; } } /** * * interval and date functions * */ function pwg_db_get_recent_period_expression($period, $date='CURRENT_DATE') { if ($date!='CURRENT_DATE') { $date = '\''.$date.'\''; } return 'date('.$date.',\''.-$period.' DAY\')'; } 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 $d; } function pwg_db_get_hour($date) { return 'strftime(\'%H\', '.$date.')'; } function pwg_db_get_date_YYYYMM($date) { return 'strftime(\'%Y%m\','.$date.')'; } function pwg_db_get_date_MMDD($date) { return 'strftime(\'%m%d\','.$date.')'; } function pwg_db_get_year($date) { return 'strftime(\'%Y\','.$date.')'; } function pwg_db_get_month($date) { return 'strftime(\'%m\','.$date.')'; } function pwg_db_get_week($date, $mode=null) { return 'strftime(\'%W\','.$date.')'; } function pwg_db_get_dayofmonth($date) { return 'strftime(\'%d\','.$date.')'; } function pwg_db_get_dayofweek($date) { return 'strftime(\'%w\','.$date.')'; } function pwg_db_get_weekday($date) { return 'strftime(\'%w\',date('.$date.',\'-1 DAY\'))'; } // my_error returns (or send to standard output) the message concerning the // error occured for the last mysql query. function my_error($header, $die) { global $pwg_db_link; $error = ''; if (isset($pwg_db_link)) { $error .= '[sqlite error]'.$pwg_db_link->errorInfo()."\n"; } $error .= $header; if ($die) { fatal_error($error); } echo("
");
  trigger_error($error, E_USER_WARNING);
  echo("
"); } // sqlite create functions function pwg_now() { return date('Y-m-d H:i:s'); } function pwg_unix_timestamp() { return time(); } function pwg_if($expression, $value1, $value2) { if ($expression) { return $value1; } else { return $value2; } } function pwg_regexp($pattern, $string) { $pattern = sprintf('`%s`', $pattern); return preg_match($pattern, $string); } ?>