+
+ private function safelyUnserialize($file)
+ {
+ $e = null;
+ $meta = false;
+ $signalingException = new \UnexpectedValueException();
+ $prevUnserializeHandler = ini_set('unserialize_callback_func', '');
+ $prevErrorHandler = set_error_handler(function ($type, $msg, $file, $line, $context = array()) use (&$prevErrorHandler, $signalingException) {
+ if (E_WARNING === $type && 'Class __PHP_Incomplete_Class has no unserializer' === $msg) {
+ throw $signalingException;
+ }
+
+ return $prevErrorHandler ? $prevErrorHandler($type, $msg, $file, $line, $context) : false;
+ });
+
+ try {
+ $meta = unserialize(file_get_contents($file));
+ } catch (\Error $e) {
+ } catch (\Exception $e) {
+ }
+ restore_error_handler();
+ ini_set('unserialize_callback_func', $prevUnserializeHandler);
+ if (null !== $e && $e !== $signalingException) {
+ throw $e;
+ }
+
+ return $meta;
+ }