/**
* Clean up old cache directories from previous versions.
*
* @todo remove in version 3
*/
private function _deleteOldCaches()
{
if (self::$cleanedOldCaches) {
return;
}
self::$cleanedOldCaches = true;
$sessionsDir = $this->getSessionsDir();
if (!is_dir($sessionsDir)) {
return;
}
foreach (scandir($sessionsDir) as $filename) {
if (strpos($filename, 'sess-') !== 0) {
continue;
}
$sessionDir = $sessionsDir . DIRECTORY_SEPARATOR . $filename;
foreach (scandir($sessionDir) as $filename2) {
if ($filename2[0] === '.' || strpos($filename2, '.json') !== false) {
continue;
}
if (!isset($fs)) {
$fs = new FilesystemHelper();
}
$fs->remove($sessionDir . DIRECTORY_SEPARATOR . $filename2);
}
}
}
