setProperties();
// Avoids undefined variables, use NULL so isset() returns false
if (!isset($GLOBALS['sql_backquotes'])) {
$GLOBALS['sql_backquotes'] = null;
}
}
/**
* Sets the export SQL properties
*
* @return void
*/
protected function setProperties()
{
global $plugin_param;
$hide_sql = false;
$hide_structure = false;
if ($plugin_param['export_type'] == 'table'
&& !$plugin_param['single_table']
) {
$hide_structure = true;
$hide_sql = true;
}
if (!$hide_sql) {
$exportPluginProperties = new ExportPluginProperties();
$exportPluginProperties->setText('SQL');
$exportPluginProperties->setExtension('sql');
$exportPluginProperties->setMimeType('text/x-sql');
$exportPluginProperties->setOptionsText(__('Options'));
// create the root group that will be the options field for
// $exportPluginProperties
// this will be shown as "Format specific options"
$exportSpecificOptions = new OptionsPropertyRootGroup(
"Format Specific Options"
);
// general options main group
$generalOptions = new OptionsPropertyMainGroup("general_opts");
// comments
$subgroup = new OptionsPropertySubgroup("include_comments");
$leaf = new BoolPropertyItem(
'include_comments',
__(
'Display comments (includes info such as export'
. ' timestamp, PHP version, and server version)'
)
);
$subgroup->setSubgroupHeader($leaf);
$leaf = new TextPropertyItem(
'header_comment',
__('Additional custom header comment (\n splits lines):')
);
$subgroup->addProperty($leaf);
$leaf = new BoolPropertyItem(
'dates',
__(
'Include a timestamp of when databases were created, last'
. ' updated, and last checked'
)
);
$subgroup->addProperty($leaf);
if (!empty($GLOBALS['cfgRelation']['relation'])) {
$leaf = new BoolPropertyItem(
'relation',
__('Display foreign key relationships')
);
$subgroup->addProperty($leaf);
}
if (!empty($GLOBALS['cfgRelation']['mimework'])) {
$leaf = new BoolPropertyItem(
'mime',
__('Display MIME types')
);
$subgroup->addProperty($leaf);
}
$generalOptions->addProperty($subgroup);
// enclose in a transaction
$leaf = new BoolPropertyItem(
"use_transaction",
__('Enclose export in a transaction')
);
$leaf->setDoc(
array(
'programs',
'mysqldump',
'option_mysqldump_single-transaction',
)
);
$generalOptions->addProperty($leaf);
// disable foreign key checks
$leaf = new BoolPropertyItem(
"disable_fk",
__('Disable foreign key checks')
);
$leaf->setDoc(
array(
'manual_MySQL_Database_Administration',
'server-system-variables',
'sysvar_foreign_key_checks',
)
);
$generalOptions->addProperty($leaf);
// export views as tables
$leaf = new BoolPropertyItem(
"views_as_tables",
__('Export views as tables')
);
$generalOptions->addProperty($leaf);
// export metadata
$leaf = new BoolPropertyItem(
"metadata",
__('Export metadata')
);
$generalOptions->addProperty($leaf);
// compatibility maximization
$compats = $GLOBALS['dbi']->getCompatibilities();
if (count($compats) > 0) {
$values = array();
foreach ($compats as $val) {
$values[$val] = $val;
}
$leaf = new SelectPropertyItem(
"compatibility",
__(
'Database system or older MySQL server to maximize output'
. ' compatibility with:'
)
);
$leaf->setValues($values);
$leaf->setDoc(
array(
'manual_MySQL_Database_Administration',
'Server_SQL_mode',
)
);
$generalOptions->addProperty($leaf);
unset($values);
}
// what to dump (structure/data/both)
$subgroup = new OptionsPropertySubgroup(
"dump_table", __("Dump table")
);
$leaf = new RadioPropertyItem('structure_or_data');
$leaf->setValues(
array(
'structure' => __('structure'),
'data' => __('data'),
'structure_and_data' => __('structure and data'),
)
);
$subgroup->setSubgroupHeader($leaf);
$generalOptions->addProperty($subgroup);
// add the main group to the root group
$exportSpecificOptions->addProperty($generalOptions);
// structure options main group
if (!$hide_structure) {
$structureOptions = new OptionsPropertyMainGroup(
"structure", __('Object creation options')
);
$structureOptions->setForce('data');
// begin SQL Statements
$subgroup = new OptionsPropertySubgroup();
$leaf = new MessageOnlyPropertyItem(
'add_statements',
__('Add statements:')
);
$subgroup->setSubgroupHeader($leaf);
// server export options
if ($plugin_param['export_type'] == 'server') {
$leaf = new BoolPropertyItem(
"drop_database",
sprintf(__('Add %s statement'), 'DROP DATABASE IF EXISTS')
);
$subgroup->addProperty($leaf);
}
if ($plugin_param['export_type'] == 'database') {
$create_clause = 'CREATE DATABASE / USE';
$leaf = new BoolPropertyItem(
'create_database',
sprintf(__('Add %s statement'), $create_clause)
);
$subgroup->addProperty($leaf);
}
if ($plugin_param['export_type'] == 'table') {
$drop_clause = $GLOBALS['dbi']->getTable(
$GLOBALS['db'],
$GLOBALS['table']
)->isView()
? 'DROP VIEW'
: 'DROP TABLE';
} else {
$drop_clause = 'DROP TABLE / VIEW / PROCEDURE'
. ' / FUNCTION / EVENT';
}
$drop_clause .= ' / TRIGGER';
$leaf = new BoolPropertyItem(
'drop_table',
sprintf(__('Add %s statement'), $drop_clause)
);
$subgroup->addProperty($leaf);
$subgroup_create_table = new OptionsPropertySubgroup();
// Add table structure option
$leaf = new BoolPropertyItem(
'create_table',
sprintf(__('Add %s statement'), 'CREATE TABLE')
);
$subgroup_create_table->setSubgroupHeader($leaf);
$leaf = new BoolPropertyItem(
'if_not_exists',
'IF NOT EXISTS ' . __(
'(less efficient as indexes will be generated during table '
. 'creation)'
)
);
$subgroup_create_table->addProperty($leaf);
$leaf = new BoolPropertyItem(
'auto_increment',
sprintf(__('%s value'), 'AUTO_INCREMENT')
);
$subgroup_create_table->addProperty($leaf);
$subgroup->addProperty($subgroup_create_table);
// Add view option
$leaf = new BoolPropertyItem(
'create_view',
sprintf(__('Add %s statement'), 'CREATE VIEW')
);
$subgroup->addProperty($leaf);
$leaf = new BoolPropertyItem(
'procedure_function',
sprintf(
__('Add %s statement'),
'CREATE PROCEDURE / FUNCTION / EVENT'
)
);
$subgroup->addProperty($leaf);
// Add triggers option
$leaf = new BoolPropertyItem(
'create_trigger',
sprintf(__('Add %s statement'), 'CREATE TRIGGER')
);
$subgroup->addProperty($leaf);
$structureOptions->addProperty($subgroup);
$leaf = new BoolPropertyItem(
"backquotes",
__(
'Enclose table and column names with backquotes '
. '(Protects column and table names formed with'
. ' special characters or keywords)'
)
);
$structureOptions->addProperty($leaf);
// add the main group to the root group
$exportSpecificOptions->addProperty($structureOptions);
}
// begin Data options
$dataOptions = new OptionsPropertyMainGroup(
"data", __('Data creation options')
);
$dataOptions->setForce('structure');
$leaf = new BoolPropertyItem(
"truncate",
__('Truncate table before insert')
);
$dataOptions->addProperty($leaf);
// begin SQL Statements
$subgroup = new OptionsPropertySubgroup();
$leaf = new MessageOnlyPropertyItem(
__('Instead of INSERT statements, use:')
);
$subgroup->setSubgroupHeader($leaf);
$leaf = new BoolPropertyItem(
"delayed",
__('INSERT DELAYED statements')
);
$leaf->setDoc(
array(
'manual_MySQL_Database_Administration',
'insert_delayed'
)
);
$subgroup->addProperty($leaf);
$leaf = new BoolPropertyItem(
"ignore",
__('INSERT IGNORE statements')
);
$leaf->setDoc(
array(
'manual_MySQL_Database_Administration',
'insert',
)
);
$subgroup->addProperty($leaf);
$dataOptions->addProperty($subgroup);
// Function to use when dumping dat
$leaf = new SelectPropertyItem(
"type",
__('Function to use when dumping data:')
);
$leaf->setValues(
array(
'INSERT' => 'INSERT',
'UPDATE' => 'UPDATE',
'REPLACE' => 'REPLACE',
)
);
$dataOptions->addProperty($leaf);
/* Syntax to use when inserting data */
$subgroup = new OptionsPropertySubgroup();
$leaf = new MessageOnlyPropertyItem(
null,
__('Syntax to use when inserting data:')
);
$subgroup->setSubgroupHeader($leaf);
$leaf = new RadioPropertyItem(
"insert_syntax",
__('INSERT IGNORE statements')
);
$leaf->setValues(
array(
'complete' => __(
'include column names in every INSERT statement'
. '
Example: INSERT INTO'
. ' tbl_name (col_A,col_B,col_C) VALUES (1,2,3)'
),
'extended' => __(
'insert multiple rows in every INSERT statement'
. '
Example: INSERT INTO'
. ' tbl_name VALUES (1,2,3), (4,5,6), (7,8,9)'
),
'both' => __(
'both of the above
Example:'
. ' INSERT INTO tbl_name (col_A,col_B,col_C) VALUES'
. ' (1,2,3), (4,5,6), (7,8,9)'
),
'none' => __(
'neither of the above
Example:'
. ' INSERT INTO tbl_name VALUES (1,2,3)'
),
)
);
$subgroup->addProperty($leaf);
$dataOptions->addProperty($subgroup);
// Max length of query
$leaf = new NumberPropertyItem(
"max_query_size",
__('Maximal length of created query')
);
$dataOptions->addProperty($leaf);
// Dump binary columns in hexadecimal
$leaf = new BoolPropertyItem(
"hex_for_binary",
__(
'Dump binary columns in hexadecimal notation'
. ' (for example, "abc" becomes 0x616263)'
)
);
$dataOptions->addProperty($leaf);
// Dump time in UTC
$leaf = new BoolPropertyItem(
"utc_time",
__(
'Dump TIMESTAMP columns in UTC (enables TIMESTAMP columns'
. ' to be dumped and reloaded between servers in different'
. ' time zones)'
)
);
$dataOptions->addProperty($leaf);
// add the main group to the root group
$exportSpecificOptions->addProperty($dataOptions);
// set the options for the export plugin property item
$exportPluginProperties->setOptions($exportSpecificOptions);
$this->properties = $exportPluginProperties;
}
}
/**
* Generates SQL for routines export
*
* @param string $db Database
* @param array $aliases Aliases of db/table/columns
* @param string $type Type of exported routine
* @param string $name Verbose name of exported routine
* @param array $routines List of routines to export
* @param string $delimiter Delimiter to use in SQL
*
* @return string SQL query
*/
protected function _exportRoutineSQL(
$db, array $aliases, $type, $name, array $routines, $delimiter
) {
global $crlf;
$text = $this->_exportComment()
. $this->_exportComment($name)
. $this->_exportComment();
$used_alias = false;
$proc_query = '';
foreach ($routines as $routine) {
if (!empty($GLOBALS['sql_drop_table'])) {
$proc_query .= 'DROP ' . $type . ' IF EXISTS '
. Util::backquote($routine)
. $delimiter . $crlf;
}
$create_query = $this->replaceWithAliases(
$GLOBALS['dbi']->getDefinition($db, $type, $routine),
$aliases,
$db,
'',
$flag
);
// One warning per database
if ($flag) {
$used_alias = true;
}
$proc_query .= $create_query . $delimiter . $crlf . $crlf;
}
if ($used_alias) {
$text .= $this->_exportComment(
__('It appears your database uses routines;')
)
. $this->_exportComment(
__('alias export may not work reliably in all cases.')
)
. $this->_exportComment();
}
$text .= $proc_query;
return $text;
}
/**
* Exports routines (procedures and functions)
*
* @param string $db Database
* @param array $aliases Aliases of db/table/columns
*
* @return bool Whether it succeeded
*/
public function exportRoutines($db, array $aliases = array())
{
global $crlf;
$db_alias = $db;
$this->initAlias($aliases, $db_alias);
$text = '';
$delimiter = '$$';
$procedure_names = $GLOBALS['dbi']
->getProceduresOrFunctions($db, 'PROCEDURE');
$function_names = $GLOBALS['dbi']->getProceduresOrFunctions($db, 'FUNCTION');
if ($procedure_names || $function_names) {
$text .= $crlf
. 'DELIMITER ' . $delimiter . $crlf;
if ($procedure_names) {
$text .= $this->_exportRoutineSQL(
$db,
$aliases,
'PROCEDURE',
__('Procedures'),
$procedure_names,
$delimiter
);
}
if ($function_names) {
$text .= $this->_exportRoutineSQL(
$db,
$aliases,
'FUNCTION',
__('Functions'),
$function_names,
$delimiter
);
}
$text .= 'DELIMITER ;' . $crlf;
}
if (!empty($text)) {
return Export::outputHandler($text);
}
return false;
}
/**
* Possibly outputs comment
*
* @param string $text Text of comment
*
* @return string The formatted comment
*/
private function _exportComment($text = '')
{
if (isset($GLOBALS['sql_include_comments'])
&& $GLOBALS['sql_include_comments']
) {
// see https://dev.mysql.com/doc/refman/5.0/en/ansi-diff-comments.html
if (empty($text)) {
return '--' . $GLOBALS['crlf'];
}
$lines = preg_split("/\\r\\n|\\r|\\n/", $text);
$result = array();
foreach ($lines as $line) {
$result[] = '-- ' . $line . $GLOBALS['crlf'];
}
return implode('', $result);
}
return '';
}
/**
* Possibly outputs CRLF
*
* @return string $crlf or nothing
*/
private function _possibleCRLF()
{
if (isset($GLOBALS['sql_include_comments'])
&& $GLOBALS['sql_include_comments']
) {
return $GLOBALS['crlf'];
}
return '';
}
/**
* Outputs export footer
*
* @return bool Whether it succeeded
*/
public function exportFooter()
{
global $crlf;
$foot = '';
if (isset($GLOBALS['sql_disable_fk'])) {
$foot .= 'SET FOREIGN_KEY_CHECKS=1;' . $crlf;
}
if (isset($GLOBALS['sql_use_transaction'])) {
$foot .= 'COMMIT;' . $crlf;
}
// restore connection settings
if ($this->_sent_charset) {
$foot .= $crlf
. '/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;'
. $crlf
. '/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;'
. $crlf
. '/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;'
. $crlf;
$this->_sent_charset = false;
}
/* Restore timezone */
if (isset($GLOBALS['sql_utc_time']) && $GLOBALS['sql_utc_time']) {
$GLOBALS['dbi']->query('SET time_zone = "' . $GLOBALS['old_tz'] . '"');
}
return Export::outputHandler($foot);
}
/**
* Outputs export header. It is the first method to be called, so all
* the required variables are initialized here.
*
* @return bool Whether it succeeded
*/
public function exportHeader()
{
global $crlf, $cfg;
if (isset($GLOBALS['sql_compatibility'])) {
$tmp_compat = $GLOBALS['sql_compatibility'];
if ($tmp_compat == 'NONE') {
$tmp_compat = '';
}
$GLOBALS['dbi']->tryQuery('SET SQL_MODE="' . $tmp_compat . '"');
unset($tmp_compat);
}
$head = $this->_exportComment('phpMyAdmin SQL Dump')
. $this->_exportComment('version ' . PMA_VERSION)
. $this->_exportComment('https://www.phpmyadmin.net/')
. $this->_exportComment();
$host_string = __('Host:') . ' ' . $cfg['Server']['host'];
if (!empty($cfg['Server']['port'])) {
$host_string .= ':' . $cfg['Server']['port'];
}
$head .= $this->_exportComment($host_string);
$head .= $this->_exportComment(
__('Generation Time:') . ' '
. Util::localisedDate()
)
. $this->_exportComment(
__('Server version:') . ' ' . $GLOBALS['dbi']->getVersionString()
)
. $this->_exportComment(__('PHP Version:') . ' ' . phpversion())
. $this->_possibleCRLF();
if (isset($GLOBALS['sql_header_comment'])
&& !empty($GLOBALS['sql_header_comment'])
) {
// '\n' is not a newline (like "\n" would be), it's the characters
// backslash and n, as explained on the export interface
$lines = explode('\n', $GLOBALS['sql_header_comment']);
$head .= $this->_exportComment();
foreach ($lines as $one_line) {
$head .= $this->_exportComment($one_line);
}
$head .= $this->_exportComment();
}
if (isset($GLOBALS['sql_disable_fk'])) {
$head .= 'SET FOREIGN_KEY_CHECKS=0;' . $crlf;
}
// We want exported AUTO_INCREMENT columns to have still same value,
// do this only for recent MySQL exports
if ((! isset($GLOBALS['sql_compatibility'])
|| $GLOBALS['sql_compatibility'] == 'NONE')
) {
$head .= 'SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO";' . $crlf;
}
if (isset($GLOBALS['sql_use_transaction'])) {
$head .= 'SET AUTOCOMMIT = 0;' . $crlf
. 'START TRANSACTION;' . $crlf;
}
/* Change timezone if we should export timestamps in UTC */
if (isset($GLOBALS['sql_utc_time']) && $GLOBALS['sql_utc_time']) {
$head .= 'SET time_zone = "+00:00";' . $crlf;
$GLOBALS['old_tz'] = $GLOBALS['dbi']
->fetchValue('SELECT @@session.time_zone');
$GLOBALS['dbi']->query('SET time_zone = "+00:00"');
}
$head .= $this->_possibleCRLF();
if (! empty($GLOBALS['asfile'])) {
// we are saving as file, therefore we provide charset information
// so that a utility like the mysql client can interpret
// the file correctly
if (isset($GLOBALS['charset'])
&& isset(Charsets::$mysql_charset_map[$GLOBALS['charset']])
) {
// we got a charset from the export dialog
$set_names = Charsets::$mysql_charset_map[$GLOBALS['charset']];
} else {
// by default we use the connection charset
$set_names = Charsets::$mysql_charset_map['utf-8'];
}
if ($set_names == 'utf8' && $GLOBALS['dbi']->getVersion() > 50503) {
$set_names = 'utf8mb4';
}
$head .= $crlf
. '/*!40101 SET @OLD_CHARACTER_SET_CLIENT='
. '@@CHARACTER_SET_CLIENT */;' . $crlf
. '/*!40101 SET @OLD_CHARACTER_SET_RESULTS='
. '@@CHARACTER_SET_RESULTS */;' . $crlf
. '/*!40101 SET @OLD_COLLATION_CONNECTION='
. '@@COLLATION_CONNECTION */;' . $crlf
. '/*!40101 SET NAMES ' . $set_names . ' */;' . $crlf . $crlf;
$this->_sent_charset = true;
}
return Export::outputHandler($head);
}
/**
* Outputs CREATE DATABASE statement
*
* @param string $db Database name
* @param string $export_type 'server', 'database', 'table'
* @param string $db_alias Aliases of db
*
* @return bool Whether it succeeded
*/
public function exportDBCreate($db, $export_type, $db_alias = '')
{
global $crlf;
if (empty($db_alias)) {
$db_alias = $db;
}
if (isset($GLOBALS['sql_compatibility'])) {
$compat = $GLOBALS['sql_compatibility'];
} else {
$compat = 'NONE';
}
if (isset($GLOBALS['sql_drop_database'])) {
if (!Export::outputHandler(
'DROP DATABASE IF EXISTS '
. Util::backquoteCompat(
$db_alias,
$compat,
isset($GLOBALS['sql_backquotes'])
)
. ';' . $crlf
)
) {
return false;
}
}
if ($export_type == 'database' && !isset($GLOBALS['sql_create_database'])) {
return true;
}
$create_query = 'CREATE DATABASE IF NOT EXISTS '
. Util::backquoteCompat(
$db_alias,
$compat,
isset($GLOBALS['sql_backquotes'])
);
$collation = $GLOBALS['dbi']->getDbCollation($db);
if (mb_strpos($collation, '_')) {
$create_query .= ' DEFAULT CHARACTER SET '
. mb_substr(
$collation,
0,
mb_strpos($collation, '_')
)
. ' COLLATE ' . $collation;
} else {
$create_query .= ' DEFAULT CHARACTER SET ' . $collation;
}
$create_query .= ';' . $crlf;
if (!Export::outputHandler($create_query)) {
return false;
}
return $this->_exportUseStatement($db_alias, $compat);
}
/**
* Outputs USE statement
*
* @param string $db db to use
* @param string $compat sql compatibility
*
* @return bool Whether it succeeded
*/
private function _exportUseStatement($db, $compat)
{
global $crlf;
if (isset($GLOBALS['sql_compatibility'])
&& $GLOBALS['sql_compatibility'] == 'NONE'
) {
$result = Export::outputHandler(
'USE '
. Util::backquoteCompat(
$db,
$compat,
isset($GLOBALS['sql_backquotes'])
)
. ';' . $crlf
);
} else {
$result = Export::outputHandler('USE ' . $db . ';' . $crlf);
}
return $result;
}
/**
* Outputs database header
*
* @param string $db Database name
* @param string $db_alias Alias of db
*
* @return bool Whether it succeeded
*/
public function exportDBHeader($db, $db_alias = '')
{
if (empty($db_alias)) {
$db_alias = $db;
}
if (isset($GLOBALS['sql_compatibility'])) {
$compat = $GLOBALS['sql_compatibility'];
} else {
$compat = 'NONE';
}
$head = $this->_exportComment()
. $this->_exportComment(
__('Database:') . ' '
. Util::backquoteCompat(
$db_alias,
$compat,
isset($GLOBALS['sql_backquotes'])
)
)
. $this->_exportComment();
return Export::outputHandler($head);
}
/**
* Outputs database footer
*
* @param string $db Database name
*
* @return bool Whether it succeeded
*/
public function exportDBFooter($db)
{
global $crlf;
$result = true;
//add indexes to the sql dump file
if (isset($GLOBALS['sql_indexes'])) {
$result = Export::outputHandler($GLOBALS['sql_indexes']);
unset($GLOBALS['sql_indexes']);
}
//add auto increments to the sql dump file
if (isset($GLOBALS['sql_auto_increments'])) {
$result = Export::outputHandler($GLOBALS['sql_auto_increments']);
unset($GLOBALS['sql_auto_increments']);
}
//add constraints to the sql dump file
if (isset($GLOBALS['sql_constraints'])) {
$result = Export::outputHandler($GLOBALS['sql_constraints']);
unset($GLOBALS['sql_constraints']);
}
return $result;
}
/**
* Exports events
*
* @param string $db Database
*
* @return bool Whether it succeeded
*/
public function exportEvents($db)
{
global $crlf;
$text = '';
$delimiter = '$$';
$event_names = $GLOBALS['dbi']->fetchResult(
"SELECT EVENT_NAME FROM information_schema.EVENTS WHERE"
. " EVENT_SCHEMA= '" . $GLOBALS['dbi']->escapeString($db)
. "';"
);
if ($event_names) {
$text .= $crlf
. "DELIMITER " . $delimiter . $crlf;
$text .= $this->_exportComment()
. $this->_exportComment(__('Events'))
. $this->_exportComment();
foreach ($event_names as $event_name) {
if (!empty($GLOBALS['sql_drop_table'])) {
$text .= "DROP EVENT "
. Util::backquote($event_name)
. $delimiter . $crlf;
}
$text .= $GLOBALS['dbi']->getDefinition($db, 'EVENT', $event_name)
. $delimiter . $crlf . $crlf;
}
$text .= "DELIMITER ;" . $crlf;
}
if (!empty($text)) {
return Export::outputHandler($text);
}
return false;
}
/**
* Exports metadata from Configuration Storage
*
* @param string $db database being exported
* @param string|array $tables table(s) being exported
* @param array $metadataTypes types of metadata to export
*
* @return bool Whether it succeeded
*/
public function exportMetadata(
$db,
$tables,
array $metadataTypes
) {
$cfgRelation = $this->relation->getRelationsParam();
if (!isset($cfgRelation['db'])) {
return true;
}
$comment = $this->_possibleCRLF()
. $this->_possibleCRLF()
. $this->_exportComment()
. $this->_exportComment(__('Metadata'))
. $this->_exportComment();
if (!Export::outputHandler($comment)) {
return false;
}
if (!$this->_exportUseStatement(
$cfgRelation['db'],
$GLOBALS['sql_compatibility']
)
) {
return false;
}
$r = true;
if (is_array($tables)) {
// export metadata for each table
foreach ($tables as $table) {
$r &= $this->_exportMetadata($db, $table, $metadataTypes);
}
// export metadata for the database
$r &= $this->_exportMetadata($db, null, $metadataTypes);
} else {
// export metadata for single table
$r &= $this->_exportMetadata($db, $tables, $metadataTypes);
}
return $r;
}
/**
* Exports metadata from Configuration Storage
*
* @param string $db database being exported
* @param string $table table being exported
* @param array $metadataTypes types of metadata to export
*
* @return bool Whether it succeeded
*/
private function _exportMetadata(
$db,
$table,
array $metadataTypes
) {
$cfgRelation = $this->relation->getRelationsParam();
if (isset($table)) {
$types = array(
'column_info' => 'db_name',
'table_uiprefs' => 'db_name',
'tracking' => 'db_name',
);
} else {
$types = array(
'bookmark' => 'dbase',
'relation' => 'master_db',
'pdf_pages' => 'db_name',
'savedsearches' => 'db_name',
'central_columns' => 'db_name',
);
}
$aliases = array();
$comment = $this->_possibleCRLF()
. $this->_exportComment();
if (isset($table)) {
$comment .= $this->_exportComment(
sprintf(
__('Metadata for table %s'),
$table
)
);
} else {
$comment .= $this->_exportComment(
sprintf(
__('Metadata for database %s'),
$db
)
);
}
$comment .= $this->_exportComment();
if (!Export::outputHandler($comment)) {
return false;
}
foreach ($types as $type => $dbNameColumn) {
if (in_array($type, $metadataTypes) && isset($cfgRelation[$type])) {
// special case, designer pages and their coordinates
if ($type == 'pdf_pages') {
$sql_query = "SELECT `page_nr`, `page_descr` FROM "
. Util::backquote($cfgRelation['db'])
. "." . Util::backquote($cfgRelation[$type])
. " WHERE " . Util::backquote($dbNameColumn)
. " = '" . $GLOBALS['dbi']->escapeString($db) . "'";
$result = $GLOBALS['dbi']->fetchResult(
$sql_query,
'page_nr',
'page_descr'
);
foreach ($result as $page => $name) {
// insert row for pdf_page
$sql_query_row = "SELECT `db_name`, `page_descr` FROM "
. Util::backquote($cfgRelation['db'])
. "." . Util::backquote(
$cfgRelation[$type]
)
. " WHERE " . Util::backquote(
$dbNameColumn
)
. " = '" . $GLOBALS['dbi']->escapeString($db) . "'"
. " AND `page_nr` = '" . intval($page) . "'";
if (!$this->exportData(
$cfgRelation['db'],
$cfgRelation[$type],
$GLOBALS['crlf'],
'',
$sql_query_row,
$aliases
)
) {
return false;
}
$lastPage = $GLOBALS['crlf']
. "SET @LAST_PAGE = LAST_INSERT_ID();"
. $GLOBALS['crlf'];
if (!Export::outputHandler($lastPage)) {
return false;
}
$sql_query_coords = "SELECT `db_name`, `table_name`, "
. "'@LAST_PAGE' AS `pdf_page_number`, `x`, `y` FROM "
. Util::backquote($cfgRelation['db'])
. "." . Util::backquote(
$cfgRelation['table_coords']
)
. " WHERE `pdf_page_number` = '" . $page . "'";
$GLOBALS['exporting_metadata'] = true;
if (!$this->exportData(
$cfgRelation['db'],
$cfgRelation['table_coords'],
$GLOBALS['crlf'],
'',
$sql_query_coords,
$aliases
)
) {
$GLOBALS['exporting_metadata'] = false;
return false;
}
$GLOBALS['exporting_metadata'] = false;
}
continue;
}
// remove auto_incrementing id field for some tables
if ($type == 'bookmark') {
$sql_query = "SELECT `dbase`, `user`, `label`, `query` FROM ";
} elseif ($type == 'column_info') {
$sql_query = "SELECT `db_name`, `table_name`, `column_name`,"
. " `comment`, `mimetype`, `transformation`,"
. " `transformation_options`, `input_transformation`,"
. " `input_transformation_options` FROM";
} elseif ($type == 'savedsearches') {
$sql_query = "SELECT `username`, `db_name`, `search_name`,"
. " `search_data` FROM";
} else {
$sql_query = "SELECT * FROM ";
}
$sql_query .= Util::backquote($cfgRelation['db'])
. '.' . Util::backquote($cfgRelation[$type])
. " WHERE " . Util::backquote($dbNameColumn)
. " = '" . $GLOBALS['dbi']->escapeString($db) . "'";
if (isset($table)) {
$sql_query .= " AND `table_name` = '"
. $GLOBALS['dbi']->escapeString($table) . "'";
}
if (!$this->exportData(
$cfgRelation['db'],
$cfgRelation[$type],
$GLOBALS['crlf'],
'',
$sql_query,
$aliases
)
) {
return false;
}
}
}
return true;
}
/**
* Returns a stand-in CREATE definition to resolve view dependencies
*
* @param string $db the database name
* @param string $view the view name
* @param string $crlf the end of line sequence
* @param array $aliases Aliases of db/table/columns
*
* @return string resulting definition
*/
public function getTableDefStandIn($db, $view, $crlf, $aliases = array())
{
$db_alias = $db;
$view_alias = $view;
$this->initAlias($aliases, $db_alias, $view_alias);
$create_query = '';
if (!empty($GLOBALS['sql_drop_table'])) {
$create_query .= 'DROP VIEW IF EXISTS '
. Util::backquote($view_alias)
. ';' . $crlf;
}
$create_query .= 'CREATE TABLE ';
if (isset($GLOBALS['sql_if_not_exists'])
&& $GLOBALS['sql_if_not_exists']
) {
$create_query .= 'IF NOT EXISTS ';
}
$create_query .= Util::backquote($view_alias) . ' (' . $crlf;
$tmp = array();
$columns = $GLOBALS['dbi']->getColumnsFull($db, $view);
foreach ($columns as $column_name => $definition) {
$col_alias = $column_name;
if (!empty($aliases[$db]['tables'][$view]['columns'][$col_alias])) {
$col_alias = $aliases[$db]['tables'][$view]['columns'][$col_alias];
}
$tmp[] = Util::backquote($col_alias) . ' ' .
$definition['Type'] . $crlf;
}
$create_query .= implode(',', $tmp) . ');' . $crlf;
return ($create_query);
}
/**
* Returns CREATE definition that matches $view's structure
*
* @param string $db the database name
* @param string $view the view name
* @param string $crlf the end of line sequence
* @param bool $add_semicolon whether to add semicolon and end-of-line at
* the end
* @param array $aliases Aliases of db/table/columns
*
* @return string resulting schema
*/
private function _getTableDefForView(
$db,
$view,
$crlf,
$add_semicolon = true,
array $aliases = array()
) {
$db_alias = $db;
$view_alias = $view;
$this->initAlias($aliases, $db_alias, $view_alias);
$create_query = "CREATE TABLE";
if (isset($GLOBALS['sql_if_not_exists'])) {
$create_query .= " IF NOT EXISTS ";
}
$create_query .= Util::backquote($view_alias) . "(" . $crlf;
$columns = $GLOBALS['dbi']->getColumns($db, $view, null, true);
$firstCol = true;
foreach ($columns as $column) {
$col_alias = $column['Field'];
if (!empty($aliases[$db]['tables'][$view]['columns'][$col_alias])) {
$col_alias = $aliases[$db]['tables'][$view]['columns'][$col_alias];
}
$extracted_columnspec = Util::extractColumnSpec(
$column['Type']
);
if (!$firstCol) {
$create_query .= "," . $crlf;
}
$create_query .= " " . Util::backquote($col_alias);
$create_query .= " " . $column['Type'];
if ($extracted_columnspec['can_contain_collation']
&& !empty($column['Collation'])
) {
$create_query .= " COLLATE " . $column['Collation'];
}
if ($column['Null'] == 'NO') {
$create_query .= " NOT NULL";
}
if (isset($column['Default'])) {
$create_query .= " DEFAULT '"
. $GLOBALS['dbi']->escapeString($column['Default']) . "'";
} else {
if ($column['Null'] == 'YES') {
$create_query .= " DEFAULT NULL";
}
}
if (!empty($column['Comment'])) {
$create_query .= " COMMENT '"
. $GLOBALS['dbi']->escapeString($column['Comment']) . "'";
}
$firstCol = false;
}
$create_query .= $crlf . ")" . ($add_semicolon ? ';' : '') . $crlf;
if (isset($GLOBALS['sql_compatibility'])) {
$compat = $GLOBALS['sql_compatibility'];
} else {
$compat = 'NONE';
}
if ($compat == 'MSSQL') {
$create_query = $this->_makeCreateTableMSSQLCompatible(
$create_query
);
}
return $create_query;
}
/**
* Returns $table's CREATE definition
*
* @param string $db the database name
* @param string $table the table name
* @param string $crlf the end of line sequence
* @param string $error_url the url to go back in case
* of error
* @param bool $show_dates whether to include creation/
* update/check dates
* @param bool $add_semicolon whether to add semicolon and
* end-of-line at the end
* @param bool $view whether we're handling a view
* @param bool $update_indexes_increments whether we need to update
* two global variables
* @param array $aliases Aliases of db/table/columns
*
* @return string resulting schema
*/
public function getTableDef(
$db,
$table,
$crlf,
$error_url,
$show_dates = false,
$add_semicolon = true,
$view = false,
$update_indexes_increments = true,
array $aliases = array()
) {
global $sql_drop_table, $sql_backquotes, $sql_constraints,
$sql_constraints_query, $sql_indexes, $sql_indexes_query,
$sql_auto_increments, $sql_drop_foreign_keys;
$db_alias = $db;
$table_alias = $table;
$this->initAlias($aliases, $db_alias, $table_alias);
$schema_create = '';
$auto_increment = '';
$new_crlf = $crlf;
if (isset($GLOBALS['sql_compatibility'])) {
$compat = $GLOBALS['sql_compatibility'];
} else {
$compat = 'NONE';
}
// need to use PhpMyAdmin\DatabaseInterface::QUERY_STORE
// with $GLOBALS['dbi']->numRows() in mysqli
$result = $GLOBALS['dbi']->tryQuery(
'SHOW TABLE STATUS FROM ' . Util::backquote($db)
. ' WHERE Name = \'' . $GLOBALS['dbi']->escapeString($table) . '\'',
DatabaseInterface::CONNECT_USER,
DatabaseInterface::QUERY_STORE
);
if ($result != false) {
if ($GLOBALS['dbi']->numRows($result) > 0) {
$tmpres = $GLOBALS['dbi']->fetchAssoc($result);
// Here we optionally add the AUTO_INCREMENT next value,
// but starting with MySQL 5.0.24, the clause is already included
// in SHOW CREATE TABLE so we'll remove it below
if (isset($GLOBALS['sql_auto_increment'])
&& !empty($tmpres['Auto_increment'])
) {
$auto_increment .= ' AUTO_INCREMENT='
. $tmpres['Auto_increment'] . ' ';
}
if ($show_dates
&& isset($tmpres['Create_time'])
&& !empty($tmpres['Create_time'])
) {
$schema_create .= $this->_exportComment(
__('Creation:') . ' '
. Util::localisedDate(
strtotime($tmpres['Create_time'])
)
);
$new_crlf = $this->_exportComment() . $crlf;
}
if ($show_dates
&& isset($tmpres['Update_time'])
&& !empty($tmpres['Update_time'])
) {
$schema_create .= $this->_exportComment(
__('Last update:') . ' '
. Util::localisedDate(
strtotime($tmpres['Update_time'])
)
);
$new_crlf = $this->_exportComment() . $crlf;
}
if ($show_dates
&& isset($tmpres['Check_time'])
&& !empty($tmpres['Check_time'])
) {
$schema_create .= $this->_exportComment(
__('Last check:') . ' '
. Util::localisedDate(
strtotime($tmpres['Check_time'])
)
);
$new_crlf = $this->_exportComment() . $crlf;
}
}
$GLOBALS['dbi']->freeResult($result);
}
$schema_create .= $new_crlf;
// no need to generate a DROP VIEW here, it was done earlier
if (!empty($sql_drop_table)
&& !$GLOBALS['dbi']->getTable($db, $table)->isView()
) {
$schema_create .= 'DROP TABLE IF EXISTS '
. Util::backquote($table_alias, $sql_backquotes) . ';'
. $crlf;
}
// Complete table dump,
// Whether to quote table and column names or not
if ($sql_backquotes) {
$GLOBALS['dbi']->query('SET SQL_QUOTE_SHOW_CREATE = 1');
} else {
$GLOBALS['dbi']->query('SET SQL_QUOTE_SHOW_CREATE = 0');
}
// I don't see the reason why this unbuffered query could cause problems,
// because SHOW CREATE TABLE returns only one row, and we free the
// results below. Nonetheless, we got 2 user reports about this
// (see bug 1562533) so I removed the unbuffered mode.
// $result = $GLOBALS['dbi']->query('SHOW CREATE TABLE ' . backquote($db)
// . '.' . backquote($table), null, DatabaseInterface::QUERY_UNBUFFERED);
//
// Note: SHOW CREATE TABLE, at least in MySQL 5.1.23, does not
// produce a displayable result for the default value of a BIT
// column, nor does the mysqldump command. See MySQL bug 35796
$GLOBALS['dbi']->tryQuery('USE ' . Util::backquote($db));
$result = $GLOBALS['dbi']->tryQuery(
'SHOW CREATE TABLE ' . Util::backquote($db) . '.'
. Util::backquote($table)
);
// an error can happen, for example the table is crashed
$tmp_error = $GLOBALS['dbi']->getError();
if ($tmp_error) {
$message = sprintf(__('Error reading structure for table %s:'), "$db.$table");
$message .= ' ' . $tmp_error;
if (! defined('TESTSUITE')) {
trigger_error($message, E_USER_ERROR);
}
return $this->_exportComment($message);
}
// Old mode is stored so it can be restored once exporting is done.
$old_mode = Context::$MODE;
$warning = '';
if ($result != false && ($row = $GLOBALS['dbi']->fetchRow($result))) {
$create_query = $row[1];
unset($row);
// Convert end of line chars to one that we want (note that MySQL
// doesn't return query it will accept in all cases)
if (mb_strpos($create_query, "(\r\n ")) {
$create_query = str_replace("\r\n", $crlf, $create_query);
} elseif (mb_strpos($create_query, "(\n ")) {
$create_query = str_replace("\n", $crlf, $create_query);
} elseif (mb_strpos($create_query, "(\r ")) {
$create_query = str_replace("\r", $crlf, $create_query);
}
/*
* Drop database name from VIEW creation.
*
* This is a bit tricky, but we need to issue SHOW CREATE TABLE with
* database name, but we don't want name to show up in CREATE VIEW
* statement.
*/
if ($view) {
$create_query = preg_replace(
'/' . preg_quote(Util::backquote($db), '/') . '\./',
'',
$create_query
);
}
// Substitute aliases in `CREATE` query.
$create_query = $this->replaceWithAliases(
$create_query,
$aliases,
$db,
$table,
$flag
);
// One warning per view.
if ($flag && $view) {
$warning = $this->_exportComment()
. $this->_exportComment(
__('It appears your database uses views;')
)
. $this->_exportComment(
__('alias export may not work reliably in all cases.')
)
. $this->_exportComment();
}
// Adding IF NOT EXISTS, if required.
if (isset($GLOBALS['sql_if_not_exists'])) {
$create_query = preg_replace(
'/^CREATE TABLE/',
'CREATE TABLE IF NOT EXISTS',
$create_query
);
}
// Making the query MSSQL compatible.
if ($compat == 'MSSQL') {
$create_query = $this->_makeCreateTableMSSQLCompatible(
$create_query
);
}
// Views have no constraints, indexes, etc. They do not require any
// analysis.
if (!$view) {
if (empty($sql_backquotes)) {
// Option "Enclose table and column names with backquotes"
// was checked.
Context::$MODE |= Context::SQL_MODE_NO_ENCLOSING_QUOTES;
}
// Using appropriate quotes.
if (($compat === 'MSSQL') || ($sql_backquotes === '"')) {
Context::$MODE |= Context::SQL_MODE_ANSI_QUOTES;
}
}
/**
* Parser used for analysis.
*
* @var Parser
*/
$parser = new Parser($create_query);
/**
* `CREATE TABLE` statement.
*
* @var SelectStatement
*/
$statement = $parser->statements[0];
if (!empty($statement->entityOptions)) {
$engine = $statement->entityOptions->has('ENGINE');
} else {
$engine = '';
}
/* Avoid operation on ARCHIVE tables as those can not be altered */
if (!empty($statement->fields) && (empty($engine) || strtoupper($engine) != 'ARCHIVE')) {
/**
* Fragments containining definition of each constraint.
*
* @var array
*/
$constraints = array();
/**
* Fragments containining definition of each index.
*
* @var array
*/
$indexes = array();
/**
* Fragments containining definition of each FULLTEXT index.
*
* @var array
*/
$indexes_fulltext = array();
/**
* Fragments containining definition of each foreign key that will
* be dropped.
*
* @var array
*/
$dropped = array();
/**
* Fragment containining definition of the `AUTO_INCREMENT`.
*
* @var array
*/
$auto_increment = array();
// Scanning each field of the `CREATE` statement to fill the arrays
// above.
// If the field is used in any of the arrays above, it is removed
// from the original definition.
// Also, AUTO_INCREMENT attribute is removed.
/** @var CreateDefinition $field */
foreach ($statement->fields as $key => $field) {
if ($field->isConstraint) {
// Creating the parts that add constraints.
$constraints[] = $field::build($field);
unset($statement->fields[$key]);
} elseif (!empty($field->key)) {
// Creating the parts that add indexes (must not be
// constraints).
if ($field->key->type === 'FULLTEXT KEY') {
$indexes_fulltext[] = $field->build($field);
unset($statement->fields[$key]);
} else {
if (empty($GLOBALS['sql_if_not_exists'])) {
$indexes[] = str_replace(
'COMMENT=\'', 'COMMENT \'', $field::build($field)
);
unset($statement->fields[$key]);
}
}
}
// Creating the parts that drop foreign keys.
if (!empty($field->key)) {
if ($field->key->type === 'FOREIGN KEY') {
$dropped[] = 'FOREIGN KEY ' . Context::escape(
$field->name
);
unset($statement->fields[$key]);
}
}
// Dropping AUTO_INCREMENT.
if (!empty($field->options)) {
if ($field->options->has('AUTO_INCREMENT')
&& empty($GLOBALS['sql_if_not_exists'])
) {
$auto_increment[] = $field::build($field);
$field->options->remove('AUTO_INCREMENT');
}
}
}
/**
* The header of the `ALTER` statement (`ALTER TABLE tbl`).
*
* @var string
*/
$alter_header = 'ALTER TABLE ' .
Util::backquoteCompat(
$table_alias,
$compat,
$sql_backquotes
);
/**
* The footer of the `ALTER` statement (usually ';')
*
* @var string
*/
$alter_footer = ';' . $crlf;
// Generating constraints-related query.
if (!empty($constraints)) {
$sql_constraints_query = $alter_header . $crlf . ' ADD '
. implode(',' . $crlf . ' ADD ', $constraints)
. $alter_footer;
$sql_constraints = $this->generateComment(
$crlf,
$sql_constraints,
__('Constraints for dumped tables'),
__('Constraints for table'),
$table_alias,
$compat
) . $sql_constraints_query;
}
// Generating indexes-related query.
$sql_indexes_query = '';
if (!empty($indexes)) {
$sql_indexes_query .= $alter_header . $crlf . ' ADD '
. implode(',' . $crlf . ' ADD ', $indexes)
. $alter_footer;
}
if (!empty($indexes_fulltext)) {
// InnoDB supports one FULLTEXT index creation at a time.
// So FULLTEXT indexes are created one-by-one after other
// indexes where created.
$sql_indexes_query .= $alter_header .
' ADD ' . implode(
$alter_footer . $alter_header . ' ADD ',
$indexes_fulltext
) . $alter_footer;
}
if ((!empty($indexes)) || (!empty($indexes_fulltext))) {
$sql_indexes = $this->generateComment(
$crlf,
$sql_indexes,
__('Indexes for dumped tables'),
__('Indexes for table'),
$table_alias,
$compat
) . $sql_indexes_query;
}
// Generating drop foreign keys-related query.
if (!empty($dropped)) {
$sql_drop_foreign_keys = $alter_header . $crlf . ' DROP '
. implode(',' . $crlf . ' DROP ', $dropped)
. $alter_footer;
}
// Generating auto-increment-related query.
if ((! empty($auto_increment)) && ($update_indexes_increments)) {
$sql_auto_increments_query = $alter_header . $crlf . ' MODIFY '
. implode(',' . $crlf . ' MODIFY ', $auto_increment);
if (isset($GLOBALS['sql_auto_increment'])
&& ($statement->entityOptions->has('AUTO_INCREMENT') !== false)
) {
if (!isset($GLOBALS['table_data'])
|| (isset($GLOBALS['table_data'])
&& in_array($table, $GLOBALS['table_data']))
) {
$sql_auto_increments_query .= ', AUTO_INCREMENT='
. $statement->entityOptions->has('AUTO_INCREMENT');
}
}
$sql_auto_increments_query .= ';' . $crlf;
$sql_auto_increments = $this->generateComment(
$crlf,
$sql_auto_increments,
__('AUTO_INCREMENT for dumped tables'),
__('AUTO_INCREMENT for table'),
$table_alias,
$compat
) . $sql_auto_increments_query;
}
// Removing the `AUTO_INCREMENT` attribute from the `CREATE TABLE`
// too.
if (!empty($statement->entityOptions)
&& (empty($GLOBALS['sql_if_not_exists'])
|| empty($GLOBALS['sql_auto_increment']))
) {
$statement->entityOptions->remove('AUTO_INCREMENT');
}
// Rebuilding the query.
$create_query = $statement->build();
}
$schema_create .= $create_query;
}
$GLOBALS['dbi']->freeResult($result);
// Restoring old mode.
Context::$MODE = $old_mode;
return $warning . $schema_create . ($add_semicolon ? ';' . $crlf : '');
} // end of the 'getTableDef()' function
/**
* Returns $table's comments, relations etc.
*
* @param string $db database name
* @param string $table table name
* @param string $crlf end of line sequence
* @param bool $do_relation whether to include relation comments
* @param bool $do_mime whether to include mime comments
* @param array $aliases Aliases of db/table/columns
*
* @return string resulting comments
*/
private function _getTableComments(
$db,
$table,
$crlf,
$do_relation = false,
$do_mime = false,
array $aliases = array()
) {
global $cfgRelation, $sql_backquotes;
$db_alias = $db;
$table_alias = $table;
$this->initAlias($aliases, $db_alias, $table_alias);
$schema_create = '';
// Check if we can use Relations
list($res_rel, $have_rel) = $this->relation->getRelationsAndStatus(
$do_relation && !empty($cfgRelation['relation']),
$db,
$table
);
if ($do_mime && $cfgRelation['mimework']) {
if (!($mime_map = Transformations::getMIME($db, $table, true))) {
unset($mime_map);
}
}
if (isset($mime_map) && count($mime_map) > 0) {
$schema_create .= $this->_possibleCRLF()
. $this->_exportComment()
. $this->_exportComment(
__('MIME TYPES FOR TABLE') . ' '
. Util::backquote($table, $sql_backquotes) . ':'
);
foreach ($mime_map as $mime_field => $mime) {
$schema_create .= $this->_exportComment(
' '
. Util::backquote($mime_field, $sql_backquotes)
)
. $this->_exportComment(
' '
. Util::backquote(
$mime['mimetype'],
$sql_backquotes
)
);
}
$schema_create .= $this->_exportComment();
}
if ($have_rel) {
$schema_create .= $this->_possibleCRLF()
. $this->_exportComment()
. $this->_exportComment(
__('RELATIONSHIPS FOR TABLE') . ' '
. Util::backquote($table_alias, $sql_backquotes)
. ':'
);
foreach ($res_rel as $rel_field => $rel) {
if ($rel_field != 'foreign_keys_data') {
$rel_field_alias = !empty(
$aliases[$db]['tables'][$table]['columns'][$rel_field]
) ? $aliases[$db]['tables'][$table]['columns'][$rel_field]
: $rel_field;
$schema_create .= $this->_exportComment(
' '
. Util::backquote(
$rel_field_alias,
$sql_backquotes
)
)
. $this->_exportComment(
' '
. Util::backquote(
$rel['foreign_table'],
$sql_backquotes
)
. ' -> '
. Util::backquote(
$rel['foreign_field'],
$sql_backquotes
)
);
} else {
foreach ($rel as $one_key) {
foreach ($one_key['index_list'] as $index => $field) {
$rel_field_alias = !empty(
$aliases[$db]['tables'][$table]['columns'][$field]
) ? $aliases[$db]['tables'][$table]['columns'][$field]
: $field;
$schema_create .= $this->_exportComment(
' '
. Util::backquote(
$rel_field_alias,
$sql_backquotes
)
)
. $this->_exportComment(
' '
. Util::backquote(
$one_key['ref_table_name'],
$sql_backquotes
)
. ' -> '
. Util::backquote(
$one_key['ref_index_list'][$index],
$sql_backquotes
)
);
}
}
}
}
$schema_create .= $this->_exportComment();
}
return $schema_create;
} // end of the '_getTableComments()' function
/**
* Outputs table's structure
*
* @param string $db database name
* @param string $table table name
* @param string $crlf the end of line sequence
* @param string $error_url the url to go back in case of error
* @param string $export_mode 'create_table','triggers','create_view',
* 'stand_in'
* @param string $export_type 'server', 'database', 'table'
* @param bool $relation whether to include relation comments
* @param bool $comments whether to include the pmadb-style column
* comments as comments in the structure; this is
* deprecated but the parameter is left here
* because export.php calls exportStructure()
* also for other export types which use this
* parameter
* @param bool $mime whether to include mime comments
* @param bool $dates whether to include creation/update/check dates
* @param array $aliases Aliases of db/table/columns
*
* @return bool Whether it succeeded
*/
public function exportStructure(
$db,
$table,
$crlf,
$error_url,
$export_mode,
$export_type,
$relation = false,
$comments = false,
$mime = false,
$dates = false,
array $aliases = array()
) {
$db_alias = $db;
$table_alias = $table;
$this->initAlias($aliases, $db_alias, $table_alias);
if (isset($GLOBALS['sql_compatibility'])) {
$compat = $GLOBALS['sql_compatibility'];
} else {
$compat = 'NONE';
}
$formatted_table_name = Util::backquoteCompat(
$table_alias,
$compat,
isset($GLOBALS['sql_backquotes'])
);
$dump = $this->_possibleCRLF()
. $this->_exportComment(str_repeat('-', 56))
. $this->_possibleCRLF()
. $this->_exportComment();
switch ($export_mode) {
case 'create_table':
$dump .= $this->_exportComment(
__('Table structure for table') . ' ' . $formatted_table_name
);
$dump .= $this->_exportComment();
$dump .= $this->getTableDef(
$db,
$table,
$crlf,
$error_url,
$dates,
true,
false,
true,
$aliases
);
$dump .= $this->_getTableComments(
$db,
$table,
$crlf,
$relation,
$mime,
$aliases
);
break;
case 'triggers':
$dump = '';
$delimiter = '$$';
$triggers = $GLOBALS['dbi']->getTriggers($db, $table, $delimiter);
if ($triggers) {
$dump .= $this->_possibleCRLF()
. $this->_exportComment()
. $this->_exportComment(
__('Triggers') . ' ' . $formatted_table_name
)
. $this->_exportComment();
$used_alias = false;
$trigger_query = '';
foreach ($triggers as $trigger) {
if (!empty($GLOBALS['sql_drop_table'])) {
$trigger_query .= $trigger['drop'] . ';' . $crlf;
}
$trigger_query .= 'DELIMITER ' . $delimiter . $crlf;
$trigger_query .= $this->replaceWithAliases(
$trigger['create'],
$aliases,
$db,
$table,
$flag
);
if ($flag) {
$used_alias = true;
}
$trigger_query .= 'DELIMITER ;' . $crlf;
}
// One warning per table.
if ($used_alias) {
$dump .= $this->_exportComment(
__('It appears your table uses triggers;')
)
. $this->_exportComment(
__('alias export may not work reliably in all cases.')
)
. $this->_exportComment();
}
$dump .= $trigger_query;
}
break;
case 'create_view':
if (empty($GLOBALS['sql_views_as_tables'])) {
$dump .= $this->_exportComment(
__('Structure for view')
. ' '
. $formatted_table_name
)
. $this->_exportComment();
// delete the stand-in table previously created (if any)
if ($export_type != 'table') {
$dump .= 'DROP TABLE IF EXISTS '
. Util::backquote($table_alias) . ';' . $crlf;
}
$dump .= $this->getTableDef(
$db,
$table,
$crlf,
$error_url,
$dates,
true,
true,
true,
$aliases
);
} else {
$dump .= $this->_exportComment(
sprintf(
__('Structure for view %s exported as a table'),
$formatted_table_name
)
)
. $this->_exportComment();
// delete the stand-in table previously created (if any)
if ($export_type != 'table') {
$dump .= 'DROP TABLE IF EXISTS '
. Util::backquote($table_alias) . ';' . $crlf;
}
$dump .= $this->_getTableDefForView(
$db,
$table,
$crlf,
true,
$aliases
);
}
break;
case 'stand_in':
$dump .= $this->_exportComment(
__('Stand-in structure for view') . ' ' . $formatted_table_name
)
. $this->_exportComment(
__('(See below for the actual view)')
)
. $this->_exportComment();
// export a stand-in definition to resolve view dependencies
$dump .= $this->getTableDefStandIn($db, $table, $crlf, $aliases);
} // end switch
// this one is built by getTableDef() to use in table copy/move
// but not in the case of export
unset($GLOBALS['sql_constraints_query']);
return Export::outputHandler($dump);
}
/**
* Outputs the content of a table in SQL format
*
* @param string $db database name
* @param string $table table name
* @param string $crlf the end of line sequence
* @param string $error_url the url to go back in case of error
* @param string $sql_query SQL query for obtaining data
* @param array $aliases Aliases of db/table/columns
*
* @return bool Whether it succeeded
*/
public function exportData(
$db,
$table,
$crlf,
$error_url,
$sql_query,
array $aliases = array()
) {
global $current_row, $sql_backquotes;
// Do not export data for merge tables
if ($GLOBALS['dbi']->getTable($db, $table)->isMerge()) {
return true;
}
$db_alias = $db;
$table_alias = $table;
$this->initAlias($aliases, $db_alias, $table_alias);
if (isset($GLOBALS['sql_compatibility'])) {
$compat = $GLOBALS['sql_compatibility'];
} else {
$compat = 'NONE';
}
$formatted_table_name = Util::backquoteCompat(
$table_alias,
$compat,
$sql_backquotes
);
// Do not export data for a VIEW, unless asked to export the view as a table
// (For a VIEW, this is called only when exporting a single VIEW)
if ($GLOBALS['dbi']->getTable($db, $table)->isView()
&& empty($GLOBALS['sql_views_as_tables'])
) {
$head = $this->_possibleCRLF()
. $this->_exportComment()
. $this->_exportComment('VIEW ' . ' ' . $formatted_table_name)
. $this->_exportComment(__('Data:') . ' ' . __('None'))
. $this->_exportComment()
. $this->_possibleCRLF();
return Export::outputHandler($head);
}
$result = $GLOBALS['dbi']->tryQuery(
$sql_query,
DatabaseInterface::CONNECT_USER,
DatabaseInterface::QUERY_UNBUFFERED
);
// a possible error: the table has crashed
$tmp_error = $GLOBALS['dbi']->getError();
if ($tmp_error) {
$message = sprintf(__('Error reading data for table %s:'), "$db.$table");
$message .= ' ' . $tmp_error;
if (! defined('TESTSUITE')) {
trigger_error($message, E_USER_ERROR);
}
return Export::outputHandler(
$this->_exportComment($message)
);
}
if ($result == false) {
$GLOBALS['dbi']->freeResult($result);
return true;
}
$fields_cnt = $GLOBALS['dbi']->numFields($result);
// Get field information
$fields_meta = $GLOBALS['dbi']->getFieldsMeta($result);
$field_flags = array();
for ($j = 0; $j < $fields_cnt; $j++) {
$field_flags[$j] = $GLOBALS['dbi']->fieldFlags($result, $j);
}
$field_set = array();
for ($j = 0; $j < $fields_cnt; $j++) {
$col_as = $fields_meta[$j]->name;
if (!empty($aliases[$db]['tables'][$table]['columns'][$col_as])) {
$col_as = $aliases[$db]['tables'][$table]['columns'][$col_as];
}
$field_set[$j] = Util::backquoteCompat(
$col_as,
$compat,
$sql_backquotes
);
}
if (isset($GLOBALS['sql_type'])
&& $GLOBALS['sql_type'] == 'UPDATE'
) {
// update
$schema_insert = 'UPDATE ';
if (isset($GLOBALS['sql_ignore'])) {
$schema_insert .= 'IGNORE ';
}
// avoid EOL blank
$schema_insert .= Util::backquoteCompat(
$table_alias,
$compat,
$sql_backquotes
) . ' SET';
} else {
// insert or replace
if (isset($GLOBALS['sql_type'])
&& $GLOBALS['sql_type'] == 'REPLACE'
) {
$sql_command = 'REPLACE';
} else {
$sql_command = 'INSERT';
}
// delayed inserts?
if (isset($GLOBALS['sql_delayed'])) {
$insert_delayed = ' DELAYED';
} else {
$insert_delayed = '';
}
// insert ignore?
if (isset($GLOBALS['sql_type'])
&& $GLOBALS['sql_type'] == 'INSERT'
&& isset($GLOBALS['sql_ignore'])
) {
$insert_delayed .= ' IGNORE';
}
//truncate table before insert
if (isset($GLOBALS['sql_truncate'])
&& $GLOBALS['sql_truncate']
&& $sql_command == 'INSERT'
) {
$truncate = 'TRUNCATE TABLE '
. Util::backquoteCompat(
$table_alias,
$compat,
$sql_backquotes
) . ";";
$truncatehead = $this->_possibleCRLF()
. $this->_exportComment()
. $this->_exportComment(
__('Truncate table before insert') . ' '
. $formatted_table_name
)
. $this->_exportComment()
. $crlf;
Export::outputHandler($truncatehead);
Export::outputHandler($truncate);
}
// scheme for inserting fields
if ($GLOBALS['sql_insert_syntax'] == 'complete'
|| $GLOBALS['sql_insert_syntax'] == 'both'
) {
$fields = implode(', ', $field_set);
$schema_insert = $sql_command . $insert_delayed . ' INTO '
. Util::backquoteCompat(
$table_alias,
$compat,
$sql_backquotes
)
// avoid EOL blank
. ' (' . $fields . ') VALUES';
} else {
$schema_insert = $sql_command . $insert_delayed . ' INTO '
. Util::backquoteCompat(
$table_alias,
$compat,
$sql_backquotes
)
. ' VALUES';
}
}
//\x08\\x09, not required
$current_row = 0;
$query_size = 0;
if (($GLOBALS['sql_insert_syntax'] == 'extended'
|| $GLOBALS['sql_insert_syntax'] == 'both')
&& (!isset($GLOBALS['sql_type'])
|| $GLOBALS['sql_type'] != 'UPDATE')
) {
$separator = ',';
$schema_insert .= $crlf;
} else {
$separator = ';';
}
while ($row = $GLOBALS['dbi']->fetchRow($result)) {
if ($current_row == 0) {
$head = $this->_possibleCRLF()
. $this->_exportComment()
. $this->_exportComment(
__('Dumping data for table') . ' '
. $formatted_table_name
)
. $this->_exportComment()
. $crlf;
if (!Export::outputHandler($head)) {
return false;
}
}
// We need to SET IDENTITY_INSERT ON for MSSQL
if (isset($GLOBALS['sql_compatibility'])
&& $GLOBALS['sql_compatibility'] == 'MSSQL'
&& $current_row == 0
) {
if (!Export::outputHandler(
'SET IDENTITY_INSERT '
. Util::backquoteCompat(
$table_alias,
$compat,
$sql_backquotes
)
. ' ON ;' . $crlf
)
) {
return false;
}
}
$current_row++;
$values = array();
for ($j = 0; $j < $fields_cnt; $j++) {
// NULL
if (!isset($row[$j]) || is_null($row[$j])) {
$values[] = 'NULL';
} elseif ($fields_meta[$j]->numeric
&& $fields_meta[$j]->type != 'timestamp'
&& !$fields_meta[$j]->blob
) {
// a number
// timestamp is numeric on some MySQL 4.1, BLOBs are
// sometimes numeric
$values[] = $row[$j];
} elseif (stristr($field_flags[$j], 'BINARY') !== false
&& isset($GLOBALS['sql_hex_for_binary'])
) {
// a true BLOB
// - mysqldump only generates hex data when the --hex-blob
// option is used, for fields having the binary attribute
// no hex is generated
// - a TEXT field returns type blob but a real blob
// returns also the 'binary' flag
// empty blobs need to be different, but '0' is also empty
// :-(
if (empty($row[$j]) && $row[$j] != '0') {
$values[] = '\'\'';
} else {
$values[] = '0x' . bin2hex($row[$j]);
}
} elseif ($fields_meta[$j]->type == 'bit') {
// detection of 'bit' works only on mysqli extension
$values[] = "b'" . $GLOBALS['dbi']->escapeString(
Util::printableBitValue(
$row[$j],
$fields_meta[$j]->length
)
)
. "'";
} elseif ($fields_meta[$j]->type === 'geometry') {
// export GIS types as hex
$values[] = '0x' . bin2hex($row[$j]);
} elseif (!empty($GLOBALS['exporting_metadata'])
&& $row[$j] == '@LAST_PAGE'
) {
$values[] = '@LAST_PAGE';
} else {
// something else -> treat as a string
$values[] = '\''
. $GLOBALS['dbi']->escapeString($row[$j])
. '\'';
} // end if
} // end for
// should we make update?
if (isset($GLOBALS['sql_type'])
&& $GLOBALS['sql_type'] == 'UPDATE'
) {
$insert_line = $schema_insert;
for ($i = 0; $i < $fields_cnt; $i++) {
if (0 == $i) {
$insert_line .= ' ';
}
if ($i > 0) {
// avoid EOL blank
$insert_line .= ',';
}
$insert_line .= $field_set[$i] . ' = ' . $values[$i];
}
list($tmp_unique_condition, $tmp_clause_is_unique)
= Util::getUniqueCondition(
$result, // handle
$fields_cnt, // fields_cnt
$fields_meta, // fields_meta
$row, // row
false, // force_unique
false, // restrict_to_table
null // analyzed_sql_results
);
$insert_line .= ' WHERE ' . $tmp_unique_condition;
unset($tmp_unique_condition, $tmp_clause_is_unique);
} else {
// Extended inserts case
if ($GLOBALS['sql_insert_syntax'] == 'extended'
|| $GLOBALS['sql_insert_syntax'] == 'both'
) {
if ($current_row == 1) {
$insert_line = $schema_insert . '('
. implode(', ', $values) . ')';
} else {
$insert_line = '(' . implode(', ', $values) . ')';
$insertLineSize = mb_strlen($insert_line);
$sql_max_size = $GLOBALS['sql_max_query_size'];
if (isset($sql_max_size)
&& $sql_max_size > 0
&& $query_size + $insertLineSize > $sql_max_size
) {
if (!Export::outputHandler(';' . $crlf)) {
return false;
}
$query_size = 0;
$current_row = 1;
$insert_line = $schema_insert . $insert_line;
}
}
$query_size += mb_strlen($insert_line);
// Other inserts case
} else {
$insert_line = $schema_insert
. '(' . implode(', ', $values) . ')';
}
}
unset($values);
if (!Export::outputHandler(
($current_row == 1 ? '' : $separator . $crlf)
. $insert_line
)
) {
return false;
}
} // end while
if ($current_row > 0) {
if (!Export::outputHandler(';' . $crlf)) {
return false;
}
}
// We need to SET IDENTITY_INSERT OFF for MSSQL
if (isset($GLOBALS['sql_compatibility'])
&& $GLOBALS['sql_compatibility'] == 'MSSQL'
&& $current_row > 0
) {
$outputSucceeded = Export::outputHandler(
$crlf . 'SET IDENTITY_INSERT '
. Util::backquoteCompat(
$table_alias,
$compat,
$sql_backquotes
)
. ' OFF;' . $crlf
);
if (!$outputSucceeded) {
return false;
}
}
$GLOBALS['dbi']->freeResult($result);
return true;
} // end of the 'exportData()' function
/**
* Make a create table statement compatible with MSSQL
*
* @param string $create_query MySQL create table statement
*
* @return string MSSQL compatible create table statement
*/
private function _makeCreateTableMSSQLCompatible($create_query)
{
// In MSSQL
// 1. No 'IF NOT EXISTS' in CREATE TABLE
// 2. DATE field doesn't exists, we will use DATETIME instead
// 3. UNSIGNED attribute doesn't exist
// 4. No length on INT, TINYINT, SMALLINT, BIGINT and no precision on
// FLOAT fields
// 5. No KEY and INDEX inside CREATE TABLE
// 6. DOUBLE field doesn't exists, we will use FLOAT instead
$create_query = preg_replace(
"/^CREATE TABLE IF NOT EXISTS/",
'CREATE TABLE',
$create_query
);
// first we need to replace all lines ended with '" DATE ...,\n'
// last preg_replace preserve us from situation with date text
// inside DEFAULT field value
$create_query = preg_replace(
"/\" date DEFAULT NULL(,)?\n/",
'" datetime DEFAULT NULL$1' . "\n",
$create_query
);
$create_query = preg_replace(
"/\" date NOT NULL(,)?\n/",
'" datetime NOT NULL$1' . "\n",
$create_query
);
$create_query = preg_replace(
'/" date NOT NULL DEFAULT \'([^\'])/',
'" datetime NOT NULL DEFAULT \'$1',
$create_query
);
// next we need to replace all lines ended with ') UNSIGNED ...,'
// last preg_replace preserve us from situation with unsigned text
// inside DEFAULT field value
$create_query = preg_replace(
"/\) unsigned NOT NULL(,)?\n/",
') NOT NULL$1' . "\n",
$create_query
);
$create_query = preg_replace(
"/\) unsigned DEFAULT NULL(,)?\n/",
') DEFAULT NULL$1' . "\n",
$create_query
);
$create_query = preg_replace(
'/\) unsigned NOT NULL DEFAULT \'([^\'])/',
') NOT NULL DEFAULT \'$1',
$create_query
);
// we need to replace all lines ended with
// '" INT|TINYINT([0-9]{1,}) ...,' last preg_replace preserve us
// from situation with int([0-9]{1,}) text inside DEFAULT field
// value
$create_query = preg_replace(
'/" (int|tinyint|smallint|bigint)\([0-9]+\) DEFAULT NULL(,)?\n/',
'" $1 DEFAULT NULL$2' . "\n",
$create_query
);
$create_query = preg_replace(
'/" (int|tinyint|smallint|bigint)\([0-9]+\) NOT NULL(,)?\n/',
'" $1 NOT NULL$2' . "\n",
$create_query
);
$create_query = preg_replace(
'/" (int|tinyint|smallint|bigint)\([0-9]+\) NOT NULL DEFAULT \'([^\'])/',
'" $1 NOT NULL DEFAULT \'$2',
$create_query
);
// we need to replace all lines ended with
// '" FLOAT|DOUBLE([0-9,]{1,}) ...,'
// last preg_replace preserve us from situation with
// float([0-9,]{1,}) text inside DEFAULT field value
$create_query = preg_replace(
'/" (float|double)(\([0-9]+,[0-9,]+\))? DEFAULT NULL(,)?\n/',
'" float DEFAULT NULL$3' . "\n",
$create_query
);
$create_query = preg_replace(
'/" (float|double)(\([0-9,]+,[0-9,]+\))? NOT NULL(,)?\n/',
'" float NOT NULL$3' . "\n",
$create_query
);
$create_query = preg_replace(
'/" (float|double)(\([0-9,]+,[0-9,]+\))? NOT NULL DEFAULT \'([^\'])/',
'" float NOT NULL DEFAULT \'$3',
$create_query
);
// @todo remove indexes from CREATE TABLE
return $create_query;
}
/**
* replaces db/table/column names with their aliases
*
* @param string $sql_query SQL query in which aliases are to be substituted
* @param array $aliases Alias information for db/table/column
* @param string $db the database name
* @param string $table the tablename
* @param string &$flag the flag denoting whether any replacement was done
*
* @return string query replaced with aliases
*/
public function replaceWithAliases(
$sql_query,
array $aliases,
$db,
$table = '',
&$flag = null
) {
$flag = false;
/**
* The parser of this query.
*
* @var Parser $parser
*/
$parser = new Parser($sql_query);
if (empty($parser->statements[0])) {
return $sql_query;
}
/**
* The statement that represents the query.
*
* @var \PhpMyAdmin\SqlParser\Statements\CreateStatement $statement
*/
$statement = $parser->statements[0];
/**
* Old database name.
*
* @var string $old_database
*/
$old_database = $db;
// Replacing aliases in `CREATE TABLE` statement.
if ($statement->options->has('TABLE')) {
// Extracting the name of the old database and table from the
// statement to make sure the parameters are corect.
if (!empty($statement->name->database)) {
$old_database = $statement->name->database;
}
/**
* Old table name.
*
* @var string $old_table
*/
$old_table = $statement->name->table;
// Finding the aliased database name.
// The database might be empty so we have to add a few checks.
$new_database = null;
if (!empty($statement->name->database)) {
$new_database = $statement->name->database;
if (!empty($aliases[$old_database]['alias'])) {
$new_database = $aliases[$old_database]['alias'];
}
}
// Finding the aliases table name.
$new_table = $old_table;
if (!empty($aliases[$old_database]['tables'][$old_table]['alias'])) {
$new_table = $aliases[$old_database]['tables'][$old_table]['alias'];
}
// Replacing new values.
if (($statement->name->database !== $new_database)
|| ($statement->name->table !== $new_table)
) {
$statement->name->database = $new_database;
$statement->name->table = $new_table;
$statement->name->expr = null; // Force rebuild.
$flag = true;
}
foreach ($statement->fields as $field) {
// Column name.
if (!empty($field->type)) {
if (!empty($aliases[$old_database]['tables'][$old_table]['columns'][$field->name])) {
$field->name = $aliases[$old_database]['tables']
[$old_table]['columns'][$field->name];
$flag = true;
}
}
// Key's columns.
if (!empty($field->key)) {
foreach ($field->key->columns as $key => $column) {
if (!empty($aliases[$old_database]['tables'][$old_table]['columns'][$column['name']])) {
$field->key->columns[$key]['name'] = $aliases[$old_database]
['tables'][$old_table]['columns'][$column['name']];
$flag = true;
}
}
}
// References.
if (!empty($field->references)) {
$ref_table = $field->references->table->table;
// Replacing table.
if (!empty($aliases[$old_database]['tables'][$ref_table]['alias'])) {
$field->references->table->table
= $aliases[$old_database]['tables'][$ref_table]['alias'];
$field->references->table->expr = null;
$flag = true;
}
// Replacing column names.
foreach ($field->references->columns as $key => $column) {
if (!empty($aliases[$old_database]['tables'][$ref_table]['columns'][$column])) {
$field->references->columns[$key]
= $aliases[$old_database]['tables'][$ref_table]['columns'][$column];
$flag = true;
}
}
}
}
} elseif ($statement->options->has('TRIGGER')) {
// Extracting the name of the old database and table from the
// statement to make sure the parameters are corect.
if (!empty($statement->table->database)) {
$old_database = $statement->table->database;
}
/**
* Old table name.
*
* @var string $old_table
*/
$old_table = $statement->table->table;
if (!empty($aliases[$old_database]['tables'][$old_table]['alias'])) {
$statement->table->table
= $aliases[$old_database]['tables'][$old_table]['alias'];
$statement->table->expr = null; // Force rebuild.
$flag = true;
}
}
if (($statement->options->has('TRIGGER'))
|| ($statement->options->has('PROCEDURE'))
|| ($statement->options->has('FUNCTION'))
|| ($statement->options->has('VIEW'))
) {
// Repalcing the body.
for ($i = 0, $count = count($statement->body); $i < $count; ++$i) {
/**
* Token parsed at this moment.
*
* @var Token $token
*/
$token = $statement->body[$i];
// Replacing only symbols (that are not variables) and unknown
// identifiers.
if ((($token->type === Token::TYPE_SYMBOL)
&& (!($token->flags & Token::FLAG_SYMBOL_VARIABLE)))
|| ((($token->type === Token::TYPE_KEYWORD)
&& (!($token->flags & Token::FLAG_KEYWORD_RESERVED)))
|| ($token->type === Token::TYPE_NONE))
) {
$alias = $this->getAlias($aliases, $token->value);
if (!empty($alias)) {
// Replacing the token.
$token->token = Context::escape($alias);
$flag = true;
}
}
}
}
return $statement->build();
}
/**
* Generate comment
*
* @param string $crlf Carriage return character
* @param string $sql_statement SQL statement
* @param string $comment1 Comment for dumped table
* @param string $comment2 Comment for current table
* @param string $table_alias Table alias
* @param string $compat Compatibility mode
*
* @return string
*/
protected function generateComment(
$crlf,
$sql_statement,
$comment1,
$comment2,
$table_alias,
$compat
) {
if (!isset($sql_statement)) {
if (isset($GLOBALS['no_constraints_comments'])) {
$sql_statement = '';
} else {
$sql_statement = $crlf
. $this->_exportComment()
. $this->_exportComment($comment1)
. $this->_exportComment();
}
}
// comments for current table
if (!isset($GLOBALS['no_constraints_comments'])) {
$sql_statement .= $crlf
. $this->_exportComment()
. $this->_exportComment(
$comment2 . ' ' . Util::backquoteCompat(
$table_alias,
$compat,
isset($GLOBALS['sql_backquotes'])
)
)
. $this->_exportComment();
}
return $sql_statement;
}
}