laravel decode cookie code example

Example: laravel get cookie decoded value

In web request context cookies are usually automatically encrypted and 
decrypted by the EncryptCookies middleware. So easiest option would be just to 
enable this middleware (and its enabled by default in Laravel).

If you need to decrypt any value manually, the following will do the trick:
// get the encrypter service
$encrypter = app(\Illuminate\Contracts\Encryption\Encrypter::class);
// decrypt
$decryptedString = $encrypter->decrypt($encryptedString);

Check the code of the EncryptCookies middleware to learn more about what it 
does internally.
  
############### Or Other Method ########################
  
By default Crypt::decrypt tries to deserialize the value, and yours is not 
serialized and thats why you get the error. You need to pass a second argument
like:

Crypt::decrypt(Cookie::get('userId'), false);