News Feed
Sections




News Archive
feed this:

Looking for more information on how to do PHP the right way? Check out PHP: The Right Way

PHPMaster.com:
Better Understanding Random
April 26, 2013 @ 11:52:49

On PHPMaster.com there's a new tutorial talking about randomness in PHP, what it is and some of the things it can be used for.

Use of random values is very important in the computer security field. It is crucial in computer programming for development of secure systems that are not vulnerable to malicious subversion. Cryptography relies on random value's generation and their reproducibility for unpredictable output that is core for security of any system. Random values are fundamental for secure coding practices and PHP highly makes use of them for security. You will find them used in all libraries and frameworks and almost all codes rely on them for the generation of tokens, salts and as inputs for further functions.

He talks about the important of good random numbers and some of the common uses for it including generating salts and unique identifiers. He mentions the "pseudorandomness" of PHP's generators and how they're seeded to help increase this randomness. He finishes up the tutorial with some suggestions and language features for creating "as random as possible" values like using "/dev/urandom" on Linux-based systems.

0 comments voice your opinion now!
random language feature pseudorandom uses tutorial

Link: http://phpmaster.com/better-understanding-random

Blog.szajbe.pl:
Not so obvious behavior of $uses in CakePHP
July 09, 2008 @ 12:02:41

In this new post to the blog.szajbe.pl site a dilemma is presented - CakePHP models are not working they way one would think they should.

In CakePHP you declare what models you're going to use in a controller by defining $uses variable. You can also define it in AppController to have a certain set of models available in every controller. However be careful when doing it because you may put yourself in an unexpected situation as I did recently.

As soon as he made his script include a 'User' model in every quest, his logins stopped working. His script errored with a "Database table sessions for model Session was not found" message and refused to work. Digging deeper, he found that CakePHP merges an AppController's $uses value with the SessionControler's values. One overrides the other and your 'User' gets lost in the shuffle.

Do you have a rational explanation for such behavior? I have none. It's very unintuitive for me.
0 comments voice your opinion now!
cakephp model behavior user login appcontroller sessioncontroller merge uses



Community Events





Don't see your event here?
Let us know!


security symfony framework language artisanfiles community series voicesoftheelephpant conference version tool composer release opinion list interview laravel podcast introduction library

All content copyright, 2014 PHPDeveloper.org :: info@phpdeveloper.org - Powered by the Solar PHP Framework