Symfony 3 - 注意：unserialize（）：偏移量为11个字节的错误

Question

I do not understand, I work under Symfony 3 and I just got an error when I want to go to my user administration page:

Notice: unserialize(): Error at offset 11 of 28 bytes

Symfony\Component\Debug\Exception\ ContextErrorException

in vendor/doctrine/dbal/lib/Doctrine/DBAL/Types/ArrayType.php (line 58)

However, before it worked very well, it's very strange. Several other people have already had the same problem but it is never the same cause.

I remember doing a little emptiness in my useless files of my project but I deleted that which was unused, and the commented blocks which I did not use.

If it helps to solve my problem, here is my user.php

Thanks !

EDIT : Ok I'm just very stupid. My User entity inherits from FOSUserBundle. In my database, I had a User who had the role SUPER_ADMIN. Suaf meanwhile, in my code, I deleted this role to leave only the role ADMIN, and I modified myself in the database by removing the "SUPER" too much. I did not think it would make this kind of bug, if anyone can explain to me why, for my culture.

But in any case the problem is still solved!

Answer 1

This happens because roles are stored as a serialized array, like:

a:1:{i:0;s:16:"ROLE_SUPER_ADMIN";}

See this s:16? This means that during unserialization php will take 16 symbols (which are exactly ROLE_SUPER_ADMIN).

So, when you removed SUPER your data became

a:1:{i:0;s:16:"ROLE_ADMIN";}

and s:16 is incorrect, because now you have 10 symbols instead of 16. But php tries to get 16, which causes error.

This leads us to conclusion that editing raw data is not a good idea.