database_interface.lib.php

架設ROSE私服必備之物 ROSE數據庫

    if ( PMA_MYSQL_INT_VERSION < 50002 || empty($tables)) {
        foreach ( $databases as $each_database ) {
            if ( true === $tbl_is_group ) {
                $sql = 'SHOW TABLE STATUS FROM '
                    . PMA_backquote($each_database)
                    .' LIKE \'' . PMA_escape_mysql_wildcards(addslashes($table)) . '%\'';
            } else {
                $sql = 'SHOW TABLE STATUS FROM '
                    . PMA_backquote($each_database) . ';';
            }
            $each_tables = PMA_DBI_fetch_result($sql, 'Name', null, $link);
            foreach ( $each_tables as $table_name => $each_table ) {
                if ( 'comment' === $tbl_is_group
                  && 0 === strpos($each_table['Comment'], $table) )
                {
                    // remove table from list
                    unset( $each_tables[$table_name] );
                    continue;
                }

                if ( ! isset( $each_tables[$table_name]['Type'] )
                  && isset( $each_tables[$table_name]['Engine'] ) ) {
                    // pma BC, same parts of PMA still uses 'Type'
                    $each_tables[$table_name]['Type']
                        =& $each_tables[$table_name]['Engine'];
                } elseif ( ! isset( $each_tables[$table_name]['Engine'] )
                  && isset( $each_tables[$table_name]['Type'] ) ) {
                    // old MySQL reports Type, newer MySQL reports Engine
                    $each_tables[$table_name]['Engine']
                        =& $each_tables[$table_name]['Type'];
                }

                // MySQL forward compatibility
                // so pma could use this array as if every server is of version >5.0
                $each_tables[$table_name]['TABLE_SCHEMA']      = $each_database;
                $each_tables[$table_name]['TABLE_NAME']        =& $each_tables[$table_name]['Name'];
                $each_tables[$table_name]['ENGINE']            =& $each_tables[$table_name]['Engine'];
                $each_tables[$table_name]['VERSION']           =& $each_tables[$table_name]['Version'];
                $each_tables[$table_name]['ROW_FORMAT']        =& $each_tables[$table_name]['Row_format'];
                $each_tables[$table_name]['TABLE_ROWS']        =& $each_tables[$table_name]['Rows'];
                $each_tables[$table_name]['AVG_ROW_LENGTH']    =& $each_tables[$table_name]['Avg_row_length'];
                $each_tables[$table_name]['DATA_LENGTH']       =& $each_tables[$table_name]['Data_length'];
                $each_tables[$table_name]['MAX_DATA_LENGTH']   =& $each_tables[$table_name]['Max_data_length'];
                $each_tables[$table_name]['INDEX_LENGTH']      =& $each_tables[$table_name]['Index_length'];
                $each_tables[$table_name]['DATA_FREE']         =& $each_tables[$table_name]['Data_free'];
                $each_tables[$table_name]['AUTO_INCREMENT']    =& $each_tables[$table_name]['Auto_increment'];
                $each_tables[$table_name]['CREATE_TIME']       =& $each_tables[$table_name]['Create_time'];
                $each_tables[$table_name]['UPDATE_TIME']       =& $each_tables[$table_name]['Update_time'];
                $each_tables[$table_name]['CHECK_TIME']        =& $each_tables[$table_name]['Check_time'];
                $each_tables[$table_name]['TABLE_COLLATION']   =& $each_tables[$table_name]['Collation'];
                $each_tables[$table_name]['CHECKSUM']          =& $each_tables[$table_name]['Checksum'];
                $each_tables[$table_name]['CREATE_OPTIONS']    =& $each_tables[$table_name]['Create_options'];
                $each_tables[$table_name]['TABLE_COMMENT']     =& $each_tables[$table_name]['Comment'];

                if ( strtoupper( $each_tables[$table_name]['Comment'] ) === 'VIEW' ) {
                    $each_tables[$table_name]['TABLE_TYPE'] = 'VIEW';
                } else {
                    // TODO difference between 'TEMPORARY' and 'BASE TABLE'
                    // but how to detect?
                    $each_tables[$table_name]['TABLE_TYPE'] = 'BASE TABLE';
                }
            }

            $tables[$each_database] = $each_tables;
        }
    }

    if ( $GLOBALS['cfg']['NaturalOrder'] ) {
        foreach ( $tables as $key => $val ) {
            uksort($tables[$key], 'strnatcasecmp');
        }
    }

    if (! is_array($database)) {
        if (isset($tables[$database])) {
            return $tables[$database];
        } elseif (isset($tables[strtolower($database)])) {
            // on windows with lower_case_table_names = 1
            // MySQL returns
            // with SHOW DATABASES or information_schema.SCHEMATA: `Test`
            // but information_schema.TABLES gives `test`
            // bug #1436171
            // sf.net/tracker/?func=detail&aid=1436171&group_id=23067&atid=377408
            return $tables[strtolower($database)];
        } else {
            return $tables;
        }
    } else {
        return $tables;
    }
}

/**
 * returns count of databases for current server
 *
 * @param   string      $database   databases to count
 * @param   resource    $link       mysql db link
 */
function PMA_DBI_get_databases_count($database = null, $link = null)
{
    return count(PMA_DBI_get_dblist($link));
}

/**
 * returns array with databases containing extended infos about them
 *
 * @param   string          $databases      database
 * @param   boolean         $force_stats    retrieve stats also for MySQL < 5
 * @param   resource        $link           mysql link
 * @param   string          $sort_by        collumn to order by
 * @param   string          $sort_order     ASC or DESC
 * @param   integer         $limit_offset   starting offset for LIMIT
 * @param   bool|int        $limit_count    row count for LIMIT or true for $GLOBALS['cfg']['MaxDbList']
 * @return  array       $databases
 */
function PMA_DBI_get_databases_full($database = null, $force_stats = false,
    $link = null, $sort_by = 'SCHEMA_NAME', $sort_order = 'ASC',
    $limit_offset = 0, $limit_count = false)
{
    $sort_order = strtoupper($sort_order);

    if (true === $limit_count) {
        $limit_count = $GLOBALS['cfg']['MaxDbList'];
    }

    // initialize to avoid errors when there are no databases
    $databases = array();

    $apply_limit_and_order_manual = true;

    if (PMA_MYSQL_INT_VERSION >= 50002) {
        /**
         * if $GLOBALS['cfg']['NaturalOrder'] is enabled, we cannot use LIMIT
         * cause MySQL does not support natural ordering, we have to do it afterward
         */
        if ($GLOBALS['cfg']['NaturalOrder']) {
            $limit = '';
        } else {
            if ($limit_count) {
                $limit = ' LIMIT ' . $limit_count . ' OFFSET ' . $limit_offset;
            }

            $apply_limit_and_order_manual = false;
        }

        // get table information from information_schema
        if ( $database ) {
            $sql_where_schema = 'WHERE `SCHEMA_NAME` LIKE \''
                . addslashes( $database ) . '\'';
        } else {
            $sql_where_schema = '';
        }

        // for PMA bc:
        // `SCHEMA_FIELD_NAME` AS `SHOW_TABLE_STATUS_FIELD_NAME`
        $sql = '
             SELECT `information_schema`.`SCHEMATA`.*';
        if ($force_stats) {
            $sql .= ',
                    COUNT(`information_schema`.`TABLES`.`TABLE_SCHEMA`)
                        AS `SCHEMA_TABLES`,
                    SUM(`information_schema`.`TABLES`.`TABLE_ROWS`)
                        AS `SCHEMA_TABLE_ROWS`,
                    SUM(`information_schema`.`TABLES`.`DATA_LENGTH`)
                        AS `SCHEMA_DATA_LENGTH`,
                    SUM(`information_schema`.`TABLES`.`MAX_DATA_LENGTH`)
                        AS `SCHEMA_MAX_DATA_LENGTH`,
                    SUM(`information_schema`.`TABLES`.`INDEX_LENGTH`)
                        AS `SCHEMA_INDEX_LENGTH`,
                    SUM(`information_schema`.`TABLES`.`DATA_LENGTH`
                      + `information_schema`.`TABLES`.`INDEX_LENGTH`)
                        AS `SCHEMA_LENGTH`,
                    SUM(`information_schema`.`TABLES`.`DATA_FREE`)
                        AS `SCHEMA_DATA_FREE`';
        }
        $sql .= '
               FROM `information_schema`.`SCHEMATA`';
        if ($force_stats) {
            $sql .= '
          LEFT JOIN `information_schema`.`TABLES`
                 ON `information_schema`.`TABLES`.`TABLE_SCHEMA`
                  = `information_schema`.`SCHEMATA`.`SCHEMA_NAME`';
        }
        $sql .= '
              ' . $sql_where_schema . '
           GROUP BY `information_schema`.`SCHEMATA`.`SCHEMA_NAME`
           ORDER BY ' . PMA_backquote($sort_by) . ' ' . $sort_order
           . $limit;
        $databases = PMA_DBI_fetch_result( $sql, 'SCHEMA_NAME', null, $link );
        unset($sql_where_schema, $sql);
    } else {
        foreach ( PMA_DBI_get_dblist( $link ) as $database_name ) {
            // MySQL forward compatibility
            // so pma could use this array as if every server is of version >5.0
            $databases[$database_name]['SCHEMA_NAME']      = $database_name;

            if ( $force_stats ) {
                require_once 'mysql_charsets.lib.php';

                $databases[$database_name]['DEFAULT_COLLATION_NAME']
                    = PMA_getDbCollation( $database_name );

                // get additonal info about tables
                $databases[$database_name]['SCHEMA_TABLES']          = 0;
                $databases[$database_name]['SCHEMA_TABLE_ROWS']      = 0;
                $databases[$database_name]['SCHEMA_DATA_LENGTH']     = 0;
                $databases[$database_name]['SCHEMA_MAX_DATA_LENGTH'] = 0;
                $databases[$database_name]['SCHEMA_INDEX_LENGTH']    = 0;
                $databases[$database_name]['SCHEMA_LENGTH']          = 0;
                $databases[$database_name]['SCHEMA_DATA_FREE']       = 0;

                $res = PMA_DBI_query('SHOW TABLE STATUS FROM ' . PMA_backquote( $database_name ) . ';');
                while ( $row = PMA_DBI_fetch_assoc( $res ) ) {
                    $databases[$database_name]['SCHEMA_TABLES']++;
                    $databases[$database_name]['SCHEMA_TABLE_ROWS']
                        += $row['Rows'];
                    $databases[$database_name]['SCHEMA_DATA_LENGTH']
                        += $row['Data_length'];
                    $databases[$database_name]['SCHEMA_MAX_DATA_LENGTH']
                        += $row['Max_data_length'];
                    $databases[$database_name]['SCHEMA_INDEX_LENGTH']
                        += $row['Index_length'];
                    $databases[$database_name]['SCHEMA_DATA_FREE']
                        += $row['Data_free'];
                    $databases[$database_name]['SCHEMA_LENGTH']
                        += $row['Data_length'] + $row['Index_length'];
                }
                PMA_DBI_free_result( $res );
                unset( $res );
            }
        }
    }

    /**
     * apply limit and order manually now
     * (caused by older MySQL < 5 or $GLOBALS['cfg']['NaturalOrder'])
     */
    if ($apply_limit_and_order_manual) {

        /**
         * first apply ordering
         */
        if ($GLOBALS['cfg']['NaturalOrder']) {
            $sorter = 'strnatcasecmp';
        } else {
            $sorter = 'strcasecmp';
        }

        // produces f.e.:
        // return -1 * strnatcasecmp($a["SCHEMA_TABLES"], $b["SCHEMA_TABLES"])
        $sort_function = '
            return ' . ($sort_order == 'ASC' ? 1 : -1) . ' * ' . $sorter . '($a["' . $sort_by . '"], $b["' . $sort_by . '"]);
        ';

        usort($databases, create_function('$a, $b', $sort_function));

        /**
         * now apply limit
         */
        if ($limit_count) {
            $databases = array_slice($databases, $limit_offset, $limit_count);
        }
    }

    return $databases;
}

/**
 * returns detailed array with all columns for given table in database,
 * or all tables/databases
 *
 * @param   string  $database   name of database
 * @param   string  $table      name of table to retrieve columns from
 * @param   string  $column     name of specific column
 * @param   mixed   $link       mysql link resource
 */
function PMA_DBI_get_columns_full($database = null, $table = null,
    $column = null, $link = null)
{
    $columns = array();

    if ( PMA_MYSQL_INT_VERSION >= 50002 ) {
        $sql_wheres = array();
        $array_keys = array();

        // get columns information from information_schema
        if ( null !== $database ) {
            $sql_wheres[] = '`TABLE_SCHEMA` = \'' . addslashes($database) . '\' ';
        } else {
            $array_keys[] = 'TABLE_SCHEMA';
        }
        if (  null !== $table ) {
            $sql_wheres[] = '`TABLE_NAME` = \'' . addslashes($table) . '\' ';
        } else {
            $array_keys[] = 'TABLE_NAME';
        }
        if (  null !== $column ) {
            $sql_wheres[] = '`COLUMN_NAME` = \'' . addslashes($column) . '\' ';
        } else {
            $array_keys[] = 'COLUMN_NAME';
        }

        // for PMA bc:
        // `[SCHEMA_FIELD_NAME]` AS `[SHOW_FULL_COLUMNS_FIELD_NAME]`
        $sql = '
             SELECT *,
                    `COLUMN_NAME`       AS `Field`,
                    `COLUMN_TYPE`       AS `Type`,
                    `COLLATION_NAME`    AS `Collation`,