unitialized offset

[karimzah]

I am currently running the following code below

$factory = new RandomLib\Factory;
$generator = $factory->getMediumStrengthGenerator();
$randomString = $generator->generateString(128);

I am getting an unitialized offset error on Line 268
https://github.com/ircmaxell/RandomLib/blob/master/lib/RandomLib/Generator.php#L268

It's because line Line 266 is returning 113 bytes sometimes 117 bytes or sometimes 123 bytes
and a few times it doesn't error at all and the code works fine.
https://github.com/ircmaxell/RandomLib/blob/master/lib/RandomLib/Generator.php#L266

Any ideas on how I can investigate this further or try something that would fix the issue?

current setup on production is:
PHP Version 5.3.10-1ubuntu3.24
Aug 1 2016 20:14:32
SSL Version: OpenSSL/1.0.1
Host: x86_64-pc-linux-gnu
Ubuntu 12.04

I don't get this error on my development box which is on virtual box same php version and
ubuntu version 12.04, I have checked all the mbstring settings which are on and UTF-8 and
other PHP settings are the same.

Appreciate any help or advice on this issue, Thanks.

[ircmaxell]

Which mixer are you using?

[karimzah]

It's using the Hash, I got this by doing a var_dump($this->mixer) on the generate() function in the library
just before line 163
https://github.com/ircmaxell/RandomLib/blob/master/lib/RandomLib/Generator.php#L163

object(RandomLib\Mixer\Hash)#38 (1) { ["hash":protected]=> string(6) "sha512" }

[ircmaxell]

it's because you're using mb_strlen overloading. Turn that off, and it'll work fine.

I will work to fix this longer term.

[ircmaxell]

Please try latest master (I just pushed). It should fix your issue.

[ircmaxell]

1.2.0 released, fixing issue

[karimzah]

Yes it fixed the issue, well done. thanks 👍 .