mirror of
https://github.com/moodle/moodle.git
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53 lines
2.0 KiB
PHP
53 lines
2.0 KiB
PHP
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<?php //$Id$
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/*
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TODO:
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- exporting to server file >2GB fails in 32bit operating systems - needs warning
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- we may run out of disk space exporting to srever file - we must verify the file is not truncated; read from the end of file?
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- when sending file >4GB - FAT32 limit, Apache limit, browser limit - needs warning
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- there must be some form of progress bar during export, transfer - new tracking class could be passed around
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- command line operation - could work around some 2G/4G limits in PHP; useful for cron full backups
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- by default allow exporting into empty database only (no tables with the same prefix yet)
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- all dangerous operation (like deleting of all data) should be confirmed by key found in special file in dataroot
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(user would need file access to dataroot which might prevent various "accidents")
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- implement "Export/import running" notification in lib/setup.php (similar to new upgrade flag in config table)
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- gzip compression when storing xml file - the xml is very verbose and full of repeated tags (zip is not suitable here at all)
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this could help us keep the files bellow 2G (expected ratio is > 10:1)
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*/
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require_once($CFG->libdir.'/adminlib.php');
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require_once($CFG->libdir.'/dtllib.php');
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function dbtransfer_export_xml_database($description, $mdb) {
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@set_time_limit(0);
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session_write_close(); // release session
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header('Content-Type: application/xhtml+xml');
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header('Content-Disposition: attachment; filename=database.xml');
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header('Expires: 0');
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header('Cache-Control: must-revalidate,post-check=0,pre-check=0');
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header('Pragma: public');
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while(@ob_flush());
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$var = new file_xml_database_exporter('php://output', $mdb);
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$var->export_database($description);
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// no more output
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die;
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}
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function dbtransfer_transfer_database($sourcedb, $targetdb) {
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@set_time_limit(0);
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session_write_close(); // release session
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$var = new database_mover($sourcedb, $targetdb);
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$var->export_database(null);
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}
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