protected function backupDB($fileName = '', $ext = 'zip')
{
$dirs = MainWP_Helper::getMainWPDir('backup');
$dir = $dirs[0];
$timestamp = time();
if ('' !== $fileName) {
$fileName .= '-';
}
$filepath_prefix = $dir . 'dbBackup-' . $fileName . $timestamp;
if ($dh = opendir($dir)) {
while (($file = readdir($dh)) !== false) {
if ('.' !== $file && '..' !== $file && preg_match('/dbBackup-(.*).sql(\\.zip|\\.tar|\\.tar\\.gz|\\.tar\\.bz2|\\.tmp)?$/', $file)) {
@unlink($dir . $file);
}
}
closedir($dh);
}
$result = MainWP_Backup::get()->createBackupDB($filepath_prefix, $ext);
MainWP_Helper::update_option('mainwp_child_last_db_backup_size', filesize($result['filepath']));
return !$result ? false : array('timestamp' => $timestamp, 'file' => basename($result['filepath']), 'filesize' => filesize($result['filepath']));
}