Best way for check user is logged in or not

[eluser]tkyy[/eluser]
[quote author="xwero" date="1243265454"]
tkyy i don't like the tone of your response.

You are hinting here every premade library is crap which puts down a lot of people who have taken the time to code and present their solutions for others to use, which is disrespectful.
[/quote]

hi xwero

i truly see very good use in libs like, say, ignitedrecord. however, sessions are very, very application-specific. to use a premade lib for auth when, skills-permitting, you could quickly change the ci libs and tables to get just what you need done and prevent the overhead caused by a generic version of a feature that should be specific to the app.

If you take it into the extreme why do you use CI? It's also a crap premade framework, not? if you can do everything better why use code others made?

ci gives a great foundation for sessions: a basic session_id, data encryption, and ability to use db and validate against useragent and ip address which is great for security. the coding style of codeigniters core files is very straightforward and is not cryptic.

i actually think ci is quite good, and i prefer it to anything else, even kohana. that being said, ci is most powerful in the hands of those who fully understand how to use it. it does not take much more knowledge to modify ci session libs than it does to get to the point where you are installing an auth library.