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