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<?php

/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* set of functions with the operations section in pma
*
* @package PhpMyAdmin
*/

if (! defined('PHPMYADMIN')) {
    exit;
}

/**
* Get HTML output for database comment
*
* @param string $db database name
*
* @return string $html_output
*/
function PMA_getHtmlForDatabaseComment($db)
{
    $html_output = '<div class="operations_half_width">'
        . '<form method="post" action="db_operations.php">'
        . PMA_generate_common_hidden_inputs($db)
        . '<fieldset>'
        . '<legend>';
    if ($GLOBALS['cfg']['PropertiesIconic']) {
        $html_output .= '<img class="icon ic_b_comment" '
            . 'src="themes/dot.gif" alt="" />';
    }
    $html_output .= __('Database comment: ');
    $html_output .= '</legend>';
    $html_output .= '<input type="text" name="comment" '
        . 'class="textfield" size="30"'
        . 'value="' . htmlspecialchars(PMA_getDBComment($db)) . '" />'
        . '</fieldset>';
    $html_output .= '<fieldset class="tblFooters">'
        . '<input type="submit" value="' . __('Go') . '" />'
        . '</fieldset>'
        . '</form>'
        . '</div>';

    return $html_output;
}

/**
* Get HTML output for rename database
*
* @param string $db database name
*
* @return string $html_output
*/
function PMA_getHtmlForRenameDatabase($db)
{
    $html_output = '<div class="operations_half_width">'
        . '<form id="rename_db_form" '
        . ($GLOBALS['cfg']['AjaxEnable'] ? ' class="ajax" ' : '')
        . 'method="post" action="db_operations.php" '
        . 'onsubmit="return emptyFormElements(this, \'newname\')">';
    if (isset($_REQUEST['db_collation'])) {
        $html_output .= '<input type="hidden" name="db_collation" '
            . 'value="' . $_REQUEST['db_collation']
            .'" />' . "\n";
    }
    $html_output .= '<input type="hidden" name="what" value="data" />'
        . '<input type="hidden" name="db_rename" value="true" />'
        . PMA_generate_common_hidden_inputs($db)
        . '<fieldset>'
        . '<legend>';

    if ($GLOBALS['cfg']['PropertiesIconic']) {
        $html_output .= PMA_Util::getImage('b_edit.png');
    }
    $html_output .= __('Rename database to') . ':'
        . '</legend>';

    $html_output .= '<input id="new_db_name" type="text" name="newname" '
        . 'size="30" class="textfield" value="" />'
        . '</fieldset>'
        . '<fieldset class="tblFooters">'
        . '<input id="rename_db_input" type="submit" value="' . __('Go') . '" />'
        . '</fieldset>'
        . '</form>'
        . '</div>';

    return $html_output;
}

/**
* Get HTML for database drop link
*
* @param string $db database name
*
* @return string $html_output
*/
function PMA_getHtmlForDropDatabaseLink($db)
{
    $this_sql_query = 'DROP DATABASE ' . PMA_Util::backquote($db);
    $this_url_params = array(
        'sql_query' => $this_sql_query,
        'back' => 'db_operations.php',
        'goto' => 'main.php',
        'reload' => '1',
        'purge' => '1',
        'message_to_show' => sprintf(
            __('Database %s has been dropped.'),
            htmlspecialchars(PMA_Util::backquote($db))
        ),
        'db' => null,
    );

    $html_output = '<div class="operations_half_width">'
        . '<fieldset class="caution">';
    $html_output .= '<legend>';
    if ($GLOBALS['cfg']['PropertiesIconic']) {
        $html_output .= PMA_Util::getImage('b_deltbl.png');
    }
    $html_output .= __('Remove database')
        . '</legend>';
    $html_output .= '<ul>';
    $html_output .= PMA_getDeleteDataOrTablelink(
        $this_url_params,
        'DROP_DATABASE',
        __('Drop the database (DROP)'),
        'drop_db_anchor'
    );
    $html_output .= '</ul></fieldset>'
        . '</div>';

    return $html_output;
}

/**
* Get HTML snippet for copy database
*
* @param string $db database name
*
* @return string $html_output
*/
function PMA_getHtmlForCopyDatabase($db)
{
    $drop_clause = 'DROP TABLE / DROP VIEW';
    $choices = array(
        'structure' => __('Structure only'),
        'data' => __('Structure and data'),
        'dataonly' => __('Data only')
    );

    if (isset($_COOKIE)
        && isset($_COOKIE['pma_switch_to_new'])
        && $_COOKIE['pma_switch_to_new'] == 'true'
    ) {
        $pma_switch_to_new = 'true';
    }

    $html_output = '<div class="operations_half_width clearfloat">';
    $html_output .= '<form id="copy_db_form" '
        . ($GLOBALS['cfg']['AjaxEnable'] ? ' class="ajax" ' : '')
        . 'method="post" action="db_operations.php"'
        . 'onsubmit="return emptyFormElements(this, \'newname\')">';

    if (isset($_REQUEST['db_collation'])) {
        $html_output .= '<input type="hidden" name="db_collation" '
        . 'value="' . $_REQUEST['db_collation'] .'" />' . "\n";
    }
    $html_output .= '<input type="hidden" name="db_copy" value="true" />' . "\n"
        . PMA_generate_common_hidden_inputs($db);
    $html_output .= '<fieldset>'
        . '<legend>';

    if ($GLOBALS['cfg']['PropertiesIconic']) {
        $html_output .= PMA_Util::getImage('b_edit.png');
    }
    $html_output .= __('Copy database to') . ':'
        . '</legend>'
        . '<input type="text" name="newname" size="30" '
        . 'class="textfield" value="" /><br />'
        . PMA_Util::getRadioFields(
            'what', $choices, 'data', true
        );
    $html_output .= '<input type="checkbox" name="create_database_before_copying" '
        . 'value="1" id="checkbox_create_database_before_copying"'
        . 'checked="checked" />';
    $html_output .= '<label for="checkbox_create_database_before_copying">'
        . __('CREATE DATABASE before copying') . '</label><br />';
    $html_output .= '<input type="checkbox" name="drop_if_exists" value="true"'
        . 'id="checkbox_drop" />';
    $html_output .= '<label for="checkbox_drop">'
        . sprintf(__('Add %s'), $drop_clause)
        . '</label><br />';
    $html_output .= '<input type="checkbox" name="sql_auto_increment" value="1" '
        . 'checked="checked" id="checkbox_auto_increment" />';
    $html_output .= '<label for="checkbox_auto_increment">'
        . __('Add AUTO_INCREMENT value') . '</label><br />';
    $html_output .= '<input type="checkbox" name="add_constraints" value="1"'
        . 'id="checkbox_constraints" />';
    $html_output .= '<label for="checkbox_constraints">'
        . __('Add constraints') . '</label><br />';
    $html_output .= '<input type="checkbox" name="switch_to_new" value="true"'
        . 'id="checkbox_switch"'
        . ((isset($pma_switch_to_new) && $pma_switch_to_new == 'true')
            ? ' checked="checked"'
            : '')
        . '/>';
    $html_output .= '<label for="checkbox_switch">'
        . __('Switch to copied database') . '</label>'
        . '</fieldset>';
    $html_output .= '<fieldset class="tblFooters">'
        . '<input type="submit" name="submit_copy" value="' . __('Go') . '" />'
        . '</fieldset>'
        . '</form>'
        . '</div>';

    return $html_output;
}

/**
* Get HTML snippet for change database charset
*
* @param string $db database name
* @param string $table tabel name
*
* @return string $html_output
*/
function PMA_getHtmlForChangeDatabaseCharset($db, $table)
{
    $html_output = '<div class="operations_half_width">'
        . '<form id="change_db_charset_form" ';
    if ($GLOBALS['cfg']['AjaxEnable']) {
        $html_output .= ' class="ajax" ';
    }
    $html_output .= 'method="post" action="db_operations.php">';

    $html_output .= PMA_generate_common_hidden_inputs($db, $table);

    $html_output .= '<fieldset>' . "\n"
       . ' <legend>';
    if ($GLOBALS['cfg']['PropertiesIconic']) {
        $html_output .= PMA_Util::getImage('s_asci.png');
    }
    $html_output .= '<label for="select_db_collation">' . __('Collation')
        . ':</label>' . "\n"
        . '</legend>' . "\n"
        . PMA_generateCharsetDropdownBox(
            PMA_CSDROPDOWN_COLLATION,
            'db_collation',
            'select_db_collation',
            isset($_REQUEST['db_collation']) ? $_REQUEST['db_collation'] : '',
            false,
            3
        )
        . '</fieldset>'
        . '<fieldset class="tblFooters">'
        . '<input type="submit" name="submitcollation"'
        . ' value="' . __('Go') . '" />' . "\n"
        . '</fieldset>' . "\n"
        . '</form></div>' . "\n";

    return $html_output;
}

/**
* Get HTML snippet for export relational schema view
*
* @param string $url_query
*
* @return string $html_output
*/
function PMA_getHtmlForExportRelationalSchemaView($url_query)
{
    $html_output = '<div class="operations_full_width">'
        . '<fieldset><a href="schema_edit.php?' . $url_query . '">';
    if ($GLOBALS['cfg']['PropertiesIconic']) {
        $html_output .= PMA_Util::getImage(
            'b_edit.png'
        );
    }
    $html_output .= __('Edit or export relational schema')
        . '</a></fieldset>'
        . '</div>';

    return $html_output;
}

/**
* Run the Procedure definitions and function definitions
*
* to avoid selecting alternatively the current and new db
* we would need to modify the CREATE definitions to qualify
* the db name
*
* @param string $db database name
*
* @return void
*/
function PMA_runProcedureAndFunctionDefinitions($db)
{
    $procedure_names = PMA_DBI_get_procedures_or_functions($db, 'PROCEDURE');
    if ($procedure_names) {
        foreach ($procedure_names as $procedure_name) {
            PMA_DBI_select_db($db);
            $tmp_query = PMA_DBI_get_definition(
                $db, 'PROCEDURE', $procedure_name
            );
            // collect for later display
            $GLOBALS['sql_query'] .= "\n" . $tmp_query;
            PMA_DBI_select_db($_REQUEST['newname']);
            PMA_DBI_query($tmp_query);
        }
    }

    $function_names = PMA_DBI_get_procedures_or_functions($db, 'FUNCTION');
    if ($function_names) {
        foreach ($function_names as $function_name) {
            PMA_DBI_select_db($db);
            $tmp_query = PMA_DBI_get_definition($db, 'FUNCTION', $function_name);
            // collect for later display
            $GLOBALS['sql_query'] .= "\n" . $tmp_query;
            PMA_DBI_select_db($_REQUEST['newname']);
            PMA_DBI_query($tmp_query);
        }
    }
}

/**
* Get sql query and create database before copy
*
* @return string $sql_query
*/
function PMA_getSqlQueryAndCreateDbBeforeCopy()
{
    // lower_case_table_names=1 `DB` becomes `db`
    if (! PMA_DRIZZLE) {
        $lower_case_table_names = PMA_DBI_fetch_value(
            'SHOW VARIABLES LIKE "lower_case_table_names"', 0, 1
        );
        if ($lower_case_table_names === '1') {
            $_REQUEST['newname'] = PMA_strtolower($_REQUEST['newname']);
        }
    }

    $local_query = 'CREATE DATABASE '
        . PMA_Util::backquote($_REQUEST['newname']);
    if (isset($_REQUEST['db_collation'])) {
        $local_query .= ' DEFAULT'
            . PMA_generateCharsetQueryPart($_REQUEST['db_collation']);
    }
    $local_query .= ';';
    $sql_query = $local_query;
    // save the original db name because Tracker.class.php which
    // may be called under PMA_DBI_query() changes $GLOBALS['db']
    // for some statements, one of which being CREATE DATABASE
    $original_db = $GLOBALS['db'];
    PMA_DBI_query($local_query);
    $GLOBALS['db'] = $original_db;

    // rebuild the database list because PMA_Table::moveCopy
    // checks in this list if the target db exists
    $GLOBALS['pma']->databases->build();

    return $sql_query;
}

/**
* remove all foreign key constraints and return
* sql constraints query for full database
*
* @param array $tables_full array of all tables in given db or dbs
* @param object $export_sql_plugin export plugin instance
* @param boolean $move whether databse name is empty or not
* @param string $db database name
*
* @return string sql constraints query for full databases
*/
function PMA_getSqlConstraintsQueryForFullDb(
    $tables_full, $export_sql_plugin, $move, $db
) {
    $sql_constraints_query_full_db = array();
    foreach ($tables_full as $each_table => $tmp) {
        $sql_constraints = '';
        $sql_drop_foreign_keys = '';
        $sql_structure = $export_sql_plugin->getTableDef(
            $db, $each_table, "\n", '', false, false
        );
        if ($move && ! empty($sql_drop_foreign_keys)) {
            PMA_DBI_query($sql_drop_foreign_keys);
        }
        // keep the constraint we just dropped
        if (! empty($sql_constraints)) {
            $sql_constraints_query_full_db[] = $sql_constraints;
        }
    }
    return $sql_constraints_query_full_db;
}

/**
* Get views as an array and create SQL view stand-in
*
* @param array $tables_full array of all tables in given db or dbs
* @param object $export_sql_plugin export plugin instance
* @param strin $db database name
*
* @return array $views
*/
function PMA_getViewsAndCreateSqlViewStandIn(
    $tables_full, $export_sql_plugin, $db
) {
    $views = array();
    foreach ($tables_full as $each_table => $tmp) {
        // to be able to rename a db containing views,
        // first all the views are collected and a stand-in is created
        // the real views are created after the tables
        if (PMA_Table::isView($db, $each_table)) {
            $views[] = $each_table;
            // Create stand-in definition to resolve view dependencies
            $sql_view_standin = $export_sql_plugin->getTableDefStandIn(
                $db, $each_table, "\n"
            );
            PMA_DBI_select_db($_REQUEST['newname']);
            PMA_DBI_query($sql_view_standin);
            $GLOBALS['sql_query'] .= "\n" . $sql_view_standin;
        }
    }
    return $views;
}

/**
* Get sql query for copy/rename table and boolean for whether copy/rename or not
*
* @param array $tables_full array of all tables in given db or dbs
* @param string $sql_query sql query for all operations
* @param boolean $move whether databse name is empty or not
* @param string $db database name
*
* @return array ($sql_query, $error)
*/
function PMA_getSqlQueryForCopyTable($tables_full, $sql_query, $move, $db)
{
    $error = false;
    foreach ($tables_full as $each_table => $tmp) {
        // skip the views; we have creted stand-in definitions
        if (PMA_Table::isView($db, $each_table)) {
            continue;
        }
        $back = $sql_query;
        $sql_query = '';

        // value of $what for this table only
        $this_what = $_REQUEST['what'];

        // do not copy the data from a Merge table
        // note: on the calling FORM, 'data' means 'structure and data'
        if (PMA_Table::isMerge($db, $each_table)) {
            if ($this_what == 'data') {
                $this_what = 'structure';
            }
            if ($this_what == 'dataonly') {
                $this_what = 'nocopy';
            }
        }

        if ($this_what != 'nocopy') {
            // keep the triggers from the original db+table
            // (third param is empty because delimiters are only intended
            // for importing via the mysql client or our Import feature)
            $triggers = PMA_DBI_get_triggers($db, $each_table, '');

            if (! PMA_Table::moveCopy(
                $db, $each_table, $_REQUEST['newname'], $each_table,
                (isset($this_what) ? $this_what : 'data'),
                $move, 'db_copy'
            )) {
                $error = true;
                // $sql_query is filled by PMA_Table::moveCopy()
                $sql_query = $back . $sql_query;
                break;
            }
            // apply the triggers to the destination db+table
            if ($triggers) {
                PMA_DBI_select_db($_REQUEST['newname']);
                foreach ($triggers as $trigger) {
                    PMA_DBI_query($trigger['create']);
                    $GLOBALS['sql_query'] .= "\n" . $trigger['create'] . ';';
                }
            }

            // this does not apply to a rename operation
            if (isset($_REQUEST['add_constraints'])
                && ! empty($GLOBALS['sql_constraints_query'])
            ) {
                $GLOBALS['sql_constraints_query_full_db'][]
                    = $GLOBALS['sql_constraints_query'];
                unset($GLOBALS['sql_constraints_query']);
            }
        }
        // $sql_query is filled by PMA_Table::moveCopy()
        $sql_query = $back . $sql_query;
    }
    return array($sql_query, $error);
}

/**
* Run the EVENT definition for selected database
*
* to avoid selecting alternatively the current and new db
* we would need to modify the CREATE definitions to qualify
* the db name
*
* @param string $db database name
*
* @return void
*/
function PMA_runEventDefinitionsForDb($db)
{
    $event_names = PMA_DBI_fetch_result(
        'SELECT EVENT_NAME FROM information_schema.EVENTS WHERE EVENT_SCHEMA= \''
        . PMA_Util::sqlAddSlashes($db, true) . '\';'
    );
    if ($event_names) {
        foreach ($event_names as $event_name) {
            PMA_DBI_select_db($db);
            $tmp_query = PMA_DBI_get_definition($db, 'EVENT', $event_name);
            // collect for later display
            $GLOBALS['sql_query'] .= "\n" . $tmp_query;
            PMA_DBI_select_db($_REQUEST['newname']);
            PMA_DBI_query($tmp_query);
        }
    }
}

/**
* Handle the views, return the boolean value whether table rename/copy or not
*
* @param array $views views as an array
* @param boolean $move whether databse name is empty or not
* @param string $db database name
*
* @return boolean $_error whether table rename/copy or not
*/
function PMA_handleTheViews($views, $move, $db)
{
    $_error = false;
    // temporarily force to add DROP IF EXIST to CREATE VIEW query,
    // to remove stand-in VIEW that was created earlier
    // ( $GLOBALS['drop_if_exists'] is used in moveCopy() )
    if (isset($GLOBALS['drop_if_exists'])) {
        $temp_drop_if_exists = $GLOBALS['drop_if_exists'];
    }
    $GLOBALS['drop_if_exists'] = 'true';

    foreach ($views as $view) {
        $copying_succeeded = PMA_Table::moveCopy(
            $db, $view, $_REQUEST['newname'], $view, 'structure', $move, 'db_copy'
        );
        if (! $copying_succeeded) {
            $_error = true;
            break;
        }
    }
    unset($GLOBALS['drop_if_exists']);
    if (isset($temp_drop_if_exists)) {
        // restore previous value
        $GLOBALS['drop_if_exists'] = $temp_drop_if_exists;
    }
    return $_error;
}

/**
* Create all accumulated constraaints
*
* @return void
*/
function PMA_createAllAccumulatedConstraints()
{
    PMA_DBI_select_db($_REQUEST['newname']);
    foreach ($GLOBALS['sql_constraints_query_full_db'] as $one_query) {
        PMA_DBI_query($one_query);
        // and prepare to display them
        $GLOBALS['sql_query'] .= "\n" . $one_query;
    }
    unset($GLOBALS['sql_constraints_query_full_db']);
}

/**
* Duplicate the bookmarks for the db (done once for each db)
*
* @param boolean $_error whether table rename/copy or not
* @param string $db database name
*
* @return void
*/
function PMA_duplicateBookmarks($_error, $db)
{
    if (! $_error && $db != $_REQUEST['newname']) {
        $get_fields = array('user', 'label', 'query');
        $where_fields = array('dbase' => $db);
        $new_fields = array('dbase' => $_REQUEST['newname']);
        PMA_Table::duplicateInfo(
            'bookmarkwork', 'bookmark', $get_fields,
            $where_fields, $new_fields
        );
    }
}

/**
* Get the HTML snippet for order the table
*
* @param array $columns columns array
*
* @return string $html_out
*/
function PMA_getHtmlForOrderTheTable($columns)
{
    $html_output = '<div class="operations_half_width">';
    $html_output .= '<form method="post" id="alterTableOrderby" '
        . 'action="tbl_operations.php" '
        . ($GLOBALS['cfg']['AjaxEnable'] ? ' class="ajax"' : '') . '>';
    $html_output .= PMA_generate_common_hidden_inputs(
        $GLOBALS['db'], $GLOBALS['table']
    );
    $html_output .= '<fieldset id="fieldset_table_order">'
        . '<legend>' . __('Alter table order by') . '</legend>'
        . '<select name="order_field">';

    foreach ($columns as $fieldname) {
        $html_output .= '<option '
            . 'value="' . htmlspecialchars($fieldname['Field']) . '">'
            . htmlspecialchars($fieldname['Field']) . '</option>' . "\n";
    }
    $html_output .= '</select> ' . __('(singly)')
        . '<select name="order_order">'
        . '<option value="asc">' . __('Ascending') . '</option>'
        . '<option value="desc">' . __('Descending') . '</option>'
        . '</select>'
        . '</fieldset>'
        . '<fieldset class="tblFooters">'
        . '<input type="submit" name="submitorderby" value="' . __('Go') . '" />'
        . '</fieldset>'
        . '</form>'
        . '</div>';

     return $html_output;
}

/**
* Get the HTML snippet for move table
*
* @return string $html_output
*/
function PMA_getHtmlForMoveTable()
{
    $html_output = '<div class="operations_half_width">';
    $html_output .= '<form method="post" action="tbl_operations.php"'
        . 'onsubmit="return emptyFormElements(this, \'new_name\')">'
        . PMA_generate_common_hidden_inputs($GLOBALS['db'], $GLOBALS['table']);

    $html_output .= '<input type="hidden" name="reload" value="1" />'
        . '<input type="hidden" name="what" value="data" />'
        . '<fieldset id="fieldset_table_rename">';

    $html_output .= '<legend>' . __('Move table to (database<b>.</b>table):')
        . '</legend>';

    if (count($GLOBALS['pma']->databases) > $GLOBALS['cfg']['MaxDbList']) {
        $html_output .= '<input type="text" maxlength="100" size="30" '
            . 'name="target_db" value="' . htmlspecialchars($GLOBALS['db'])
            . '"/>';
    } else {
        $html_output .= '<select name="target_db">'
            . $GLOBALS['pma']->databases->getHtmlOptions(true, false)
            . '</select>';
    }
    $html_output .= '&nbsp;<strong>.</strong>&nbsp;';
    $html_output .= '<input type="text" size="20" name="new_name"'
        . ' onfocus="this.select()"'
        . 'value="' . htmlspecialchars($GLOBALS['table']) . '" /><br />';

    // starting with MySQL 5.0.24, SHOW CREATE TABLE includes the AUTO_INCREMENT
    // next value but users can decide if they want it or not for the operation

    $html_output .= '<input type="checkbox" name="sql_auto_increment" '
        . 'value="1" id="checkbox_auto_increment_mv" checked="checked" />'
        . '<label for="checkbox_auto_increment_mv">'
        . __('Add AUTO_INCREMENT value')
        . '</label><br />'
        . '</fieldset>';

    $html_output .= '<fieldset class="tblFooters">'
        . '<input type="submit" name="submit_move" value="' . __('Go') . '" />'
        . '</fieldset>'
        . '</form>'
        . '</div>';

    return $html_output;
}

/**
* Get the HTML div for Table option
*
* @param string $comment Comment
* @param array $tbl_collation table collation
* @param string $tbl_storage_engine table storage engine
* @param boolean $is_myisam_or_aria whether MYISAM | ARIA or not
* @param boolean $is_isam whether ISAM or not
* @param array $pack_keys pack keys
* @param string $auto_increment value of auto increment
* @param string $delay_key_write delay key write
* @param string $transactional value of transactional
* @param string $page_checksum value of page checksum
* @param boolean $is_innodb whether INNODB or not
* @param boolean $is_pbxt whether PBXT or not
* @param boolean $is_aria whether ARIA or not
* @param string $checksum the checksum
*
* @return string $html_output
*/
function PMA_getTableOptionDiv($comment, $tbl_collation, $tbl_storage_engine,
    $is_myisam_or_aria, $is_isam, $pack_keys, $auto_increment, $delay_key_write,
    $transactional, $page_checksum, $is_innodb, $is_pbxt, $is_aria, $checksum
) {
    $html_output = '<div class="operations_half_width clearfloat">';
    $html_output .= '<form method="post" action="tbl_operations.php">';
    $html_output .= PMA_generate_common_hidden_inputs(
        $GLOBALS['db'], $GLOBALS['table']
    );
    $html_output .= '<input type="hidden" name="reload" value="1" />';

    $html_output .= PMA_getTableOptionFieldset(
        $comment, $tbl_collation,
        $tbl_storage_engine, $is_myisam_or_aria, $is_isam, $pack_keys,
        $delay_key_write, $auto_increment, $transactional, $page_checksum,
        $is_innodb, $is_pbxt, $is_aria, $checksum
    );

    $html_output .= '<fieldset class="tblFooters">'
        . '<input type="submit" name="submitoptions" value="' . __('Go') . '" />'
        . '</fieldset>'
        . '</form>'
        . '</div>';

    return $html_output;
}

/**
* Get HTML fieldset for Table option, it contains HTML table for options
*
* @param string $comment Comment
* @param array $tbl_collation table collation
* @param string $tbl_storage_engine table storage engine
* @param boolean $is_myisam_or_aria whether MYISAM | ARIA or not
* @param boolean $is_isam whether ISAM or not
* @param array $pack_keys pack keys
* @param string $delay_key_write delay key write
* @param string $auto_increment value of auto increment
* @param string $transactional value of transactional
* @param string $page_checksum value of page checksum
* @param boolean $is_innodb whether INNODB or not
* @param boolean $is_pbxt whether PBXT or not
* @param boolean $is_aria whether ARIA or not
* @param string $checksum the checksum
*
* @return string $html_output
*/
function PMA_getTableOptionFieldset($comment, $tbl_collation,
    $tbl_storage_engine, $is_myisam_or_aria, $is_isam, $pack_keys,
    $delay_key_write, $auto_increment, $transactional,
    $page_checksum, $is_innodb, $is_pbxt, $is_aria, $checksum
) {
    $html_output = '<fieldset>'
        . '<legend>' . __('Table options') . '</legend>';

    $html_output .= '<table>';
    //Change table name
    $html_output .= '<tr><td>' . __('Rename table to') . '</td>'
        . '<td>'
        . '<input type="text" size="20" name="new_name" onfocus="this.select()"'
        . 'value="' . htmlspecialchars($GLOBALS['table']) . '" />'
        . '</td>'
        . '</tr>';

    //Table comments
    $html_output .= '<tr><td>' . __('Table comments') . '</td>'
        . '<td><input type="text" name="comment" maxlength="60" size="30"'
        . 'value="' . htmlspecialchars($comment) . '" onfocus="this.select()" />'
        . '<input type="hidden" name="prev_comment" value="'
        . htmlspecialchars($comment) . '" />'
        . '</td>'
        . '</tr>';

    //Storage engine
    $html_output .= '<tr><td>' . __('Storage Engine')
        . PMA_Util::showMySQLDocu(
            'Storage_engines', 'Storage_engines'
        )
        . '</td>'
        . '<td>'
        . PMA_StorageEngine::getHtmlSelect(
            'new_tbl_storage_engine', null, $tbl_storage_engine
        )
        . '</td>'
        . '</tr>';

    //Table character set
    $html_output .= '<tr><td>' . __('Collation') . '</td>'
        . '<td>'
        . PMA_generateCharsetDropdownBox(
            PMA_CSDROPDOWN_COLLATION,
            'tbl_collation', null, $tbl_collation, false, 3
        )
        . '</td>'
        . '</tr>';

    if ($is_myisam_or_aria || $is_isam) {
        $html_output .= '<tr>'
            . '<td><label for="new_pack_keys">PACK_KEYS</label></td>'
            . '<td><select name="new_pack_keys" id="new_pack_keys">';

        $html_output .= '<option value="DEFAULT"';
        if ($pack_keys == 'DEFAULT') {
            $html_output .= 'selected="selected"';
        }
        $html_output .= '>DEFAULT</option>
<option value="0"';
        if ($pack_keys == '0') {
            $html_output .= 'selected="selected"';
        }
        $html_output .= '>0</option>
<option value="1" ';
        if ($pack_keys == '1') {
            $html_output .= 'selected="selected"';
        }
        $html_output .= '>1</option>'
            . '</select>'
            . '</td>'
            . '</tr>';
    } // end if (MYISAM|ISAM)

    if ($is_myisam_or_aria) {
        $html_output .= PMA_getHtmlForTableRow(
            'new_checksum',
            'CHECKSUM',
            $checksum
        );

        $html_output .= PMA_getHtmlForTableRow(
            'new_delay_key_write',
            'DELAY_KEY_WRITE',
            $delay_key_write
        );
    } // end if (MYISAM)

    if ($is_aria) {
        $html_output .= PMA_getHtmlForTableRow(
            'new_transactional',
            'TRANSACTIONAL',
            $transactional
        );

        $html_output .= PMA_getHtmlForTableRow(
            'new_page_checksum',
            'PAGE_CHECKSUM',
            $page_checksum
        );
    } // end if (ARIA)

    if (isset($_REQUEST['auto_increment'])
        && strlen($_REQUEST['auto_increment']) > 0
        && ($is_myisam_or_aria || $is_innodb || $is_pbxt)
    ) {
        $html_output .= '<tr><td>'
            . '<label for="auto_increment_opt">AUTO_INCREMENT</label></td>'
            . '<td><input type="text" name="new_auto_increment" '
            . 'id="auto_increment_opt"'
            . 'value="' . $auto_increment . '" /></td>'
            . '</tr> ';
    } // end if (MYISAM|INNODB)

    $possible_row_formats = PMA_getPossibleRowFormat();

    // for MYISAM there is also COMPRESSED but it can be set only by the
    // myisampack utility, so don't offer here the choice because if we
    // try it inside an ALTER TABLE, MySQL (at least in 5.1.23-maria)
    // does not return a warning
    // (if the table was compressed, it can be seen on the Structure page)

    if (isset($possible_row_formats[$tbl_storage_engine])) {
        $current_row_format = strtoupper($GLOBALS['showtable']['Row_format']);
        $html_output .= '<tr><td>'
            . '<label for="new_row_format">ROW_FORMAT</label></td>'
            . '<td>';
        $html_output .= PMA_Util::getDropdown(
            'new_row_format', $possible_row_formats[$tbl_storage_engine],
            $current_row_format, 'new_row_format'
        );
        $html_output .= '</td></tr>';
    }
    $html_output .= '</table>'
        . '</fieldset>';

    return $html_output;
}

/**
* Get the common HTML table row (tr) for new_checksum, new_delay_key_write,
* new_transactional and new_page_checksum
*
* @param string $attribute class, name and id attribute
* @param string $label label value
* @param string $val checksum, delay_key_write, transactional, page_checksum
*
* @return string $html_output
*/
function PMA_getHtmlForTableRow($attribute, $label, $val)
{
    return '<tr>'
        . '<td><label for="' . $attribute . '">' . $label . '</label></td>'
        . '<td><input type="checkbox" name="'. $attribute .'"'
        . ' id="' . $attribute .'"'
        . ' value="1"'
        . ((!empty($val) && $val == 1) ? ' checked="checked"' : '') . '/></td>'
        . '</tr>';
}

/**
* Get array of possible row formats
*
* @return array $possible_row_formats
*/
function PMA_getPossibleRowFormat()
{
    // the outer array is for engines, the inner array contains the dropdown
    // option values as keys then the dropdown option labels

    $possible_row_formats = array(
        'ARIA' => array(
            'FIXED' => 'FIXED',
            'DYNAMIC' => 'DYNAMIC',
            'PAGE' => 'PAGE'
        ),
        'MARIA' => array(
            'FIXED' => 'FIXED',
            'DYNAMIC' => 'DYNAMIC',
            'PAGE' => 'PAGE'
        ),
        'MYISAM' => array(
             'FIXED' => 'FIXED',
             'DYNAMIC' => 'DYNAMIC'
        ),
        'PBXT' => array(
             'FIXED' => 'FIXED',
             'DYNAMIC' => 'DYNAMIC'
        ),
        'INNODB' => array(
             'COMPACT' => 'COMPACT',
             'REDUNDANT' => 'REDUNDANT'
        )
    );

    $innodb_engine_plugin = PMA_StorageEngine::getEngine('innodb');
    $innodb_plugin_version = $innodb_engine_plugin->getInnodbPluginVersion();
    if (!empty($innodb_plugin_version)) {
        $innodb_file_format = $innodb_engine_plugin->getInnodbFileFormat();
    } else {
        $innodb_file_format = '';
    }
    if ('Barracuda' == $innodb_file_format
        && $innodb_engine_plugin->supportsFilePerTable()
    ) {
        $possible_row_formats['INNODB']['DYNAMIC'] = 'DYNAMIC';
        $possible_row_formats['INNODB']['COMPRESSED'] = 'COMPRESSED';
    }

    return $possible_row_formats;
}

/**
* Get HTML div for copy table
*
* @return string $html_output
*/
function PMA_getHtmlForCopytable()
{
    $html_output = '<div class="operations_half_width">';
    $html_output .= '<form method="post" action="tbl_operations.php" '
        . 'name="copyTable" '
        . 'id="copyTable" '
        . ($GLOBALS['cfg']['AjaxEnable'] ? ' class="ajax"' : '')
        . 'onsubmit="return emptyFormElements(this, \'new_name\')">'
        . PMA_generate_common_hidden_inputs($GLOBALS['db'], $GLOBALS['table'])
        . '<input type="hidden" name="reload" value="1" />';

    $html_output .= '<fieldset>';
    $html_output .= '<legend>'
        . __('Copy table to (database<b>.</b>table):') . '</legend>';

    if (count($GLOBALS['pma']->databases) > $GLOBALS['cfg']['MaxDbList']) {
        $html_output .= '<input type="text" maxlength="100" '
            . 'size="30" name="target_db" '
            . 'value="'. htmlspecialchars($GLOBALS['db']) . '"/>';
    } else {
        $html_output .= '<select name="target_db">'
            . $GLOBALS['pma']->databases->getHtmlOptions(true, false)
            . '</select>';
    }
    $html_output .= '&nbsp;<strong>.</strong>&nbsp;';
    $html_output .= '<input type="text" size="20" name="new_name" '
        . 'onfocus="this.select()" '
        . 'value="'. htmlspecialchars($GLOBALS['table']) . '"/><br />';

    $choices = array(
            'structure' => __('Structure only'),
            'data' => __('Structure and data'),
            'dataonly' => __('Data only'));

    $html_output .= PMA_Util::getRadioFields(
        'what', $choices, 'data', true
    );

    $html_output .= '<input type="checkbox" name="drop_if_exists" '
        . 'value="true" id="checkbox_drop" />'
        . '<label for="checkbox_drop">'
        . sprintf(__('Add %s'), 'DROP TABLE') . '</label><br />'
        . '<input type="checkbox" name="sql_auto_increment" '
        . 'value="1" id="checkbox_auto_increment_cp" />'
        . '<label for="checkbox_auto_increment_cp">'
        . __('Add AUTO_INCREMENT value') . '</label><br />';

    // display "Add constraints" choice only if there are
    // foreign keys
    if (PMA_getForeigners($GLOBALS['db'], $GLOBALS['table'], '', 'foreign')) {
        $html_output .= '<input type="checkbox" name="add_constraints" '
            . 'value="1" id="checkbox_constraints" />';
        $html_output .= '<label for="checkbox_constraints">'
            .__('Add constraints') . '</label><br />';
    } // endif

    if (isset($_COOKIE['pma_switch_to_new'])
        && $_COOKIE['pma_switch_to_new'] == 'true'
    ) {
        $pma_switch_to_new = 'true';
    }

    $html_output .= '<input type="checkbox" name="switch_to_new" value="true"'
        . 'id="checkbox_switch"'
        . ((isset($pma_switch_to_new) && $pma_switch_to_new == 'true')
            ? ' checked="checked"'
            : '' . '/>');
    $html_output .= '<label for="checkbox_switch">'
        . __('Switch to copied table') . '</label>'
        . '</fieldset>';

    $html_output .= '<fieldset class="tblFooters">'
        . '<input type="submit" name="submit_copy" value="' .__('Go') . '" />'
        . '</fieldset>'
        . '</form>'
        . '</div>';

    return $html_output;
}

/**
* Get HTML snippet for table maintence
*
* @param boolean $is_myisam_or_aria whether MYISAM | ARIA or not
* @param boolean $is_innodb whether innodb or not
* @param boolean $is_berkeleydb whether berkeleydb or not
* @param array $url_params array of URL parameters
*
* @return string $html_output
*/
function PMA_getHtmlForTableMaintenance(
    $is_myisam_or_aria, $is_innodb, $is_berkeleydb, $url_params
) {
    $html_output = '<div class="operations_half_width">';
    $html_output .= '<fieldset>'
        . '<legend>' . __('Table maintenance') . '</legend>';
    $html_output .= '<ul id="tbl_maintenance" '
        . ($GLOBALS['cfg']['AjaxEnable'] ? ' class="ajax"' : '') .'>';

    // Note: BERKELEY (BDB) is no longer supported, starting with MySQL 5.1
    $html_output .= PMA_getListofMaintainActionLink(
        $is_myisam_or_aria, $is_innodb, $url_params, $is_berkeleydb
    );

    $html_output .= '</ul>'
        . '</fieldset>'
        . '</div>';

    return $html_output;
}

/**
* Get HTML 'li' having a link of maintain action
*
* @param boolean $is_myisam_or_aria whether MYISAM | ARIA or not
* @param boolean $is_innodb whether innodb or not
* @param array $url_params array of URL parameters
* @param boolean $is_berkeleydb whether berkeleydb or not
*
* @return string $html_output
*/
function PMA_getListofMaintainActionLink($is_myisam_or_aria,
    $is_innodb, $url_params, $is_berkeleydb
) {
    $html_output = '';

    if ($is_myisam_or_aria || $is_innodb || $is_berkeleydb) {
        if ($is_myisam_or_aria || $is_innodb) {
            $params = array(
                'sql_query' => 'CHECK TABLE '
                    . PMA_Util::backquote($GLOBALS['table']),
                'table_maintenance' => 'Go',
            );
            $html_output .= PMA_getMaintainActionlink(
                __('Check table'),
                $params,
                $url_params,
                'CHECK_TABLE'
            );
        }
        if ($is_innodb) {
            $params = array(
                'sql_query' => 'ALTER TABLE '
                . PMA_Util::backquote($GLOBALS['table'])
                . ' ENGINE = InnoDB;'
            );
            $html_output .= PMA_getMaintainActionlink(
                __('Defragment table'),
                $params,
                $url_params,
                'InnoDB_File_Defragmenting',
                'Table_types'
            );
        }
        if ($is_myisam_or_aria || $is_berkeleydb) {
            $params = array(
                'sql_query' => 'ANALYZE TABLE '
                    . PMA_Util::backquote($GLOBALS['table']),
                'table_maintenance' => 'Go',
            );
            $html_output .= PMA_getMaintainActionlink(
                __('Analyze table'),
                $params,
                $url_params,
                'ANALYZE_TABLE'
            );
        }
        if ($is_myisam_or_aria && !PMA_DRIZZLE) {
            $params = array(
                'sql_query' => 'REPAIR TABLE '
                    . PMA_Util::backquote($GLOBALS['table']),
                'table_maintenance' => 'Go',
            );
            $html_output .= PMA_getMaintainActionlink(
                __('Repair table'),
                $params,
                $url_params,
                'REPAIR_TABLE'
            );
        }
        if (($is_myisam_or_aria || $is_innodb || $is_berkeleydb)
            && !PMA_DRIZZLE
        ) {
            $params = array(
                'sql_query' => 'OPTIMIZE TABLE '
                    . PMA_Util::backquote($GLOBALS['table']),
                'table_maintenance' => 'Go',
            );
            $html_output .= PMA_getMaintainActionlink(
                __('Optimize table'),
                $params,
                $url_params,
                'OPTIMIZE_TABLE'
            );
        }
    } // end MYISAM or BERKELEYDB case

    $params = array(
        'sql_query' => 'FLUSH TABLE '
            . PMA_Util::backquote($GLOBALS['table']),
        'message_to_show' => sprintf(
            __('Table %s has been flushed'),
            htmlspecialchars($GLOBALS['table'])
        ),
        'reload' => 1,
    );

    $html_output .= PMA_getMaintainActionlink(
        __('Flush the table (FLUSH)'),
        $params,
        $url_params,
        'FLUSH'
    );

    return $html_output;
}

/**
* Get maintain action HTML link
*
* @param string $action
* @param array $params url parameters array
* @param array $url_params
* @param string $link contains name of page/anchor that is being linked
* @param string $chapter chapter of "HTML, one page per chapter" documentation
*
* @return string $html_output
*/
function PMA_getMaintainActionlink($action, $params, $url_params, $link,
    $chapter = 'MySQL_Database_Administration'
) {
    return '<li>'
        . '<a class="maintain_action" '
        . 'href="tbl_operations.php'
        . PMA_generate_common_url(array_merge($url_params, $params)) .'">'
        . $action
        . '</a>'
        . PMA_Util::showMySQLDocu($chapter, $link)
        . '</li>';
}

/**
* Get HTML for Delete data or table (truncate table, drop table)
*
* @param array $truncate_table_url_params url parameter array for truncate table
* @param array $drop_table_url_params url parameter array for drop table
*
* @return string $html_output
*/
function PMA_getHtmlForDeleteDataOrTable(
    $truncate_table_url_params,
    $drop_table_url_params
) {
    $html_output = '<div class="operations_half_width">'
        . '<fieldset class="caution">'
        . '<legend>' . __('Delete data or table') . '</legend>';

    $html_output .= '<ul>';

    if (! empty($truncate_table_url_params)) {
        $html_output .= PMA_getDeleteDataOrTablelink(
            $truncate_table_url_params,
            'TRUNCATE_TABLE',
            __('Empty the table (TRUNCATE)'),
            'truncate_tbl_anchor'
        );
    }
    if (!empty ($drop_table_url_params)) {
        $html_output .= PMA_getDeleteDataOrTablelink(
            $drop_table_url_params,
            'DROP_TABLE',
            __('Delete the table (DROP)'),
            'drop_tbl_anchor'
        );
    }
    $html_output .= '</ul></fieldset></div>';

    return $html_output;
}

/**
* Get the HTML link for Truncate table, Drop table and Drop db
*
* @param array $url_params url parameter array for delete data or table
* @param string $syntax TRUNCATE_TABLE or DROP_TABLE or DROP_DATABASE
* @param string $link link to be shown
* @param string $id id of the link
*
* @return String html output
*/
function PMA_getDeleteDataOrTablelink($url_params, $syntax, $link, $id)
{
    return '<li><a '
        . 'href="sql.php' . PMA_generate_common_url($url_params) . '"'
        . ($GLOBALS['cfg']['AjaxEnable']
            ? ' id="' . $id . '" class="ajax"'
            : ''
        ) . '>'
        . $link . '</a>'
        . PMA_Util::showMySQLDocu(
            'SQL-Syntax', $syntax
        )
        . '</li>';
}

/**
* Get HTML snippet for partition maintenance
*
* @param array $partition_names array of partition names for a specific db/table
* @param array $url_params url parameters
*
* @return string $html_output
*/
function PMA_getHtmlForPartitionMaintenance($partition_names, $url_params)
{
    $choices = array(
        'ANALYZE' => __('Analyze'),
        'CHECK' => __('Check'),
        'OPTIMIZE' => __('Optimize'),
        'REBUILD' => __('Rebuild'),
        'REPAIR' => __('Repair')
    );

    $html_output = '<div class="operations_half_width">'
        . '<form method="post" action="tbl_operations.php">'
        . PMA_generate_common_hidden_inputs($GLOBALS['db'], $GLOBALS['table'])
        . '<fieldset>'
        . '<legend>' . __('Partition maintenance') . '</legend>';

    $html_select = '<select name="partition_name">' . "\n";
    foreach ($partition_names as $one_partition) {
        $one_partition = htmlspecialchars($one_partition);
        $html_select .= '<option value="' . $one_partition . '">'
            . $one_partition . '</option>' . "\n";
    }
    $html_select .= '</select>' . "\n";
    $html_output .= sprintf(__('Partition %s'), $html_select);

    $html_output .= PMA_Util::getRadioFields(
        'partition_operation', $choices, '', false
    );
    $html_output .= PMA_Util::showMySQLDocu(
        'partitioning_maintenance',
        'partitioning_maintenance'
    );
    $this_url_params = array_merge(
        $url_params,
        array(
            'sql_query' => 'ALTER TABLE '
            . PMA_Util::backquote($GLOBALS['table'])
            . ' REMOVE PARTITIONING;'
        )
    );
    $html_output .= '<br /><a href="sql.php'
        . PMA_generate_common_url($this_url_params) . '">'
        . __('Remove partitioning') . '</a>';

    $html_output .= '</fieldset>'
        . '<fieldset class="tblFooters">'
        . '<input type="submit" name="submit_partition" '
        . 'value="' . __('Go') . '" />'
        . '</fieldset>'
        . '</form>'
        . '</div>';

    return $html_output;
}

/**
* Get the HTML for Referential Integrity check
*
* @param array $foreign all Relations to foreign tables for a given table
* or optionally a given column in a table
* @param array $url_params array of url parameters
*
* @return string $html_output
*/
function PMA_getHtmlForReferentialIntegrityCheck($foreign, $url_params)
{
    $html_output = '<div class="operations_half_width">'
        . '<fieldset>'
        . '<legend>' . __('Check referential integrity:') . '</legend>';

    $html_output .= '<ul>' . '"\n"';

    foreach ($foreign AS $master => $arr) {
        $join_query = 'SELECT '
            . PMA_Util::backquote($GLOBALS['table']) . '.*'
            . ' FROM ' . PMA_Util::backquote($GLOBALS['table'])
            . ' LEFT JOIN ' . PMA_Util::backquote($arr['foreign_table']);
        if ($arr['foreign_table'] == $GLOBALS['table']) {
            $foreign_table = $GLOBALS['table'] . '1';
            $join_query .= ' AS ' . PMA_Util::backquote($foreign_table);
        } else {
            $foreign_table = $arr['foreign_table'];
        }
        $join_query .= ' ON '
            . PMA_Util::backquote($GLOBALS['table']) . '.'
            . PMA_Util::backquote($master)
            . ' = ' . PMA_Util::backquote($foreign_table) . '.'
            . PMA_Util::backquote($arr['foreign_field'])
            . ' WHERE '
            . PMA_Util::backquote($foreign_table) . '.'
            . PMA_Util::backquote($arr['foreign_field'])
            . ' IS NULL AND '
            . PMA_Util::backquote($GLOBALS['table']) . '.'
            . PMA_Util::backquote($master)
            . ' IS NOT NULL';
        $this_url_params = array_merge(
            $url_params,
            array('sql_query' => $join_query)
        );

        $html_output .= '<li>'
            . '<a href="sql.php'
            . PMA_generate_common_url($this_url_params)
            . '">'
            . $master . '&nbsp;->&nbsp;' . $arr['foreign_table'] . '.'
            . $arr['foreign_field']
            . '</a></li>' . "\n";
    } // foreach $foreign
    $html_output .= '</ul></fieldset></div>';

    return $html_output;
}

function PMA_getQueryAndResultForReorderingTable()
{
    $sql_query = 'ALTER TABLE '
        . PMA_Util::backquote($GLOBALS['table'])
        . ' ORDER BY '
        . PMA_Util::backquote(urldecode($_REQUEST['order_field']));
    if (isset($_REQUEST['order_order'])
        && $_REQUEST['order_order'] === 'desc'
    ) {
        $sql_query .= ' DESC';
    }
    $sql_query .= ';';
    $result = PMA_DBI_query($sql_query);

    return array($sql_query, $result);
}

/**
* Get table alters array
*
* @param boolean $is_myisam_or_aria whether MYISAM | ARIA or not
* @param boolean $is_isam whether ISAM or not
* @param string $pack_keys pack keys
* @param string $checksum value of checksum
* @param boolean $is_aria whether ARIA or not
* @param string $page_checksum value of page checksum
* @param string $delay_key_write delay key write
* @param boolean $is_innodb whether INNODB or not
* @param boolean $is_pbxt whether PBXT or not
* @param string $row_format row format
* @param string $tbl_storage_engine table storage engine
* @param string $transactional value of transactional
* @param string $tbl_collation collation of the table
*
* @return array $table_alters
*/
function PMA_getTableAltersArray($is_myisam_or_aria, $is_isam, $pack_keys,
    $checksum, $is_aria, $page_checksum, $delay_key_write, $is_innodb,
    $is_pbxt, $row_format, $tbl_storage_engine, $transactional, $tbl_collation
) {
    $table_alters = array();

    if (isset($_REQUEST['comment'])
        && urldecode($_REQUEST['prev_comment']) !== $_REQUEST['comment']
    ) {
        $table_alters[] = 'COMMENT = \''
            . PMA_Util::sqlAddSlashes($_REQUEST['comment']) . '\'';
    }
    if (! empty($_REQUEST['new_tbl_storage_engine'])
        && strtolower($_REQUEST['new_tbl_storage_engine']) !== strtolower($tbl_storage_engine)
    ) {
        $table_alters[] = 'ENGINE = ' . $_REQUEST['new_tbl_storage_engine'];
    }
    if (! empty($_REQUEST['tbl_collation'])
        && $_REQUEST['tbl_collation'] !== $tbl_collation
    ) {
        $table_alters[] = 'DEFAULT '
            . PMA_generateCharsetQueryPart($_REQUEST['tbl_collation']);
    }

    if (($is_myisam_or_aria || $is_isam)
        && isset($_REQUEST['new_pack_keys'])
        && $_REQUEST['new_pack_keys'] != (string)$pack_keys
    ) {
        $table_alters[] = 'pack_keys = ' . $_REQUEST['new_pack_keys'];
    }

    $_REQUEST['new_checksum'] = empty($_REQUEST['new_checksum']) ? '0' : '1';
    if ($is_myisam_or_aria
        && $_REQUEST['new_checksum'] !== $checksum
    ) {
        $table_alters[] = 'checksum = ' . $_REQUEST['new_checksum'];
    }

    $_REQUEST['new_transactional']
        = empty($_REQUEST['new_transactional']) ? '0' : '1';
    if ($is_aria
        && $_REQUEST['new_transactional'] !== $transactional
    ) {
        $table_alters[] = 'TRANSACTIONAL = ' . $_REQUEST['new_transactional'];
    }

    $_REQUEST['new_page_checksum']
        = empty($_REQUEST['new_page_checksum']) ? '0' : '1';
    if ($is_aria
        && $_REQUEST['new_page_checksum'] !== $page_checksum
    ) {
        $table_alters[] = 'PAGE_CHECKSUM = ' . $_REQUEST['new_page_checksum'];
    }

    $_REQUEST['new_delay_key_write']
        = empty($_REQUEST['new_delay_key_write']) ? '0' : '1';
    if ($is_myisam_or_aria
        && $_REQUEST['new_delay_key_write'] !== $delay_key_write
    ) {
        $table_alters[] = 'delay_key_write = ' . $_REQUEST['new_delay_key_write'];
    }

    if (($is_myisam_or_aria || $is_innodb || $is_pbxt)
        && ! empty($_REQUEST['new_auto_increment'])
        && (! isset($auto_increment)
        || $_REQUEST['new_auto_increment'] !== $auto_increment)
    ) {
        $table_alters[] = 'auto_increment = '
            . PMA_Util::sqlAddSlashes($_REQUEST['new_auto_increment']);
    }

    if (($is_myisam_or_aria || $is_innodb || $is_pbxt)
        && ! empty($_REQUEST['new_row_format'])
        && (!strlen($row_format)
        || strtolower($_REQUEST['new_row_format']) !== strtolower($row_format))
    ) {
        $table_alters[] = 'ROW_FORMAT = '
            . PMA_Util::sqlAddSlashes($_REQUEST['new_row_format']);
    }

    return $table_alters;
}

/**
* set initial value of the set of variables, based on the current table engine
*
* @param string $tbl_storage_engine table storage engine
*
* @return array ($is_myisam_or_aria, $is_innodb, $is_isam,
$is_berkeleydb, $is_aria, $is_pbxt)
*/
function PMA_setGlobalVariablesForEngine($tbl_storage_engine)
{
    $is_myisam_or_aria = $is_isam = $is_innodb = $is_berkeleydb
        = $is_aria = $is_pbxt = false;
    $upper_tbl_storage_engine = strtoupper($tbl_storage_engine);

    //Options that apply to MYISAM usually apply to ARIA
    $is_myisam_or_aria = ($upper_tbl_storage_engine == 'MYISAM'
        || $upper_tbl_storage_engine == 'ARIA'
        || $upper_tbl_storage_engine == 'MARIA'
    );
    $is_aria = ($upper_tbl_storage_engine == 'ARIA');

    $is_isam = ($upper_tbl_storage_engine == 'ISAM');
    $is_innodb = ($upper_tbl_storage_engine == 'INNODB');
    $is_berkeleydb = ($upper_tbl_storage_engine == 'BERKELEYDB');
    $is_pbxt = ($upper_tbl_storage_engine == 'PBXT');

    return array(
        $is_myisam_or_aria, $is_innodb, $is_isam,
        $is_berkeleydb, $is_aria, $is_pbxt
    );
}

/**
* Get warning messages array
*
* @return array $warning_messages
*/
function PMA_getWarningMessagesArray()
{
    $warning_messages = array();
    foreach (PMA_DBI_get_warnings() as $warning) {
        // In MariaDB 5.1.44, when altering a table from Maria to MyISAM
        // and if TRANSACTIONAL was set, the system reports an error;
        // I discussed with a Maria developer and he agrees that this
        // should not be reported with a Level of Error, so here
        // I just ignore it. But there are other 1478 messages
        // that it's better to show.
        if (! ($_REQUEST['new_tbl_storage_engine'] == 'MyISAM'
            && $warning['Code'] == '1478'
            && $warning['Level'] == 'Error')
        ) {
            $warning_messages[] = $warning['Level'] . ': #' . $warning['Code']
                . ' ' . $warning['Message'];
        }
    }
    return $warning_messages;
}

/**
* Get SQL query and result after ran this SQL query for a partition operation
* has been requested by the user
*
* @return array $sql_query, $result
*/
function PMA_getQueryAndResultForPartition()
{
    $sql_query = 'ALTER TABLE '
        . PMA_Util::backquote($GLOBALS['table']) . ' '
        . $_REQUEST['partition_operation']
        . ' PARTITION '
        . $_REQUEST['partition_name'] . ';';
    $result = PMA_DBI_query($sql_query);

    return array($sql_query, $result);
}

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