Caldarone, Marina

Ewing, Robyn (Robyn Ann), 1955- author

Hunter, Kelly, 1961- author

Shurtleff, Michael, author

My session driver of choice for CodeIgniter is database. A while ago, I noticed millions of rows in the corresponding database table. That means that garbage collector was not working. I checked config.php for sess_regenerate_destroy, but it was already set to false. It was really weird because the problem seemed to have come out of nowhere – not much ago things were working just fine.

After a short investigation, I found out this was and still is a common problem for those who had upgraded their CodeIgniter version from 2.x to 3.x. Turns out, the later possesses heavy changes for Sessions library. And most importantly – fundamental changes in dealing with garbage: CodeIgniter 3.x relies on PHP's native grabage collector. So, in order to get things working again, we need to configure PHP properly.

The Solution

Today there are three PHP-native settings for dealing with session garbage collector. CodeIgniter's Session library has already taken care of one of them – gc_maxlifetime – so there's no need for an extra touch here. The problem lies within the rest: session.gc_probability and/or session.gc_divisor. These two determine when the garbage collector is running. Here's what php.net says:

session.gc_divisor coupled with session.gc_probability defines the probability that the gc (garbage collection) process is started on every session initialization. The probability is calculated by using gc_probability/gc_divisor, e.g. 1/100 means there is a 1% chance that the GC process starts on each request.

In my case, using ini_get() revealed the following values: 0 and 1000. The equation 0/1000=0 meant there was no chance the garbage collector would even run.

Finally, I solved the problem by using the values officially stated as default and by putting the following lines of PHP code into config/config.php file:

ini_set( 'session.gc_probability',	1 );
ini_set( 'session.gc_divisor',		100 );

Theoretically, this means that the garbage collector usually runs once every 100th request. It's more than enough, but it is up to you whether that causes too many unnecessary hits to database. An alternative solution for heavy-traffic websites could be having a 0% probability on the production site and a Cronjob-based script which removes database rows of the expired sessions.

Barker Library - QC176.8.N35 C43 2013

Hayden Library - TK7874.85.S474 2012

Hayden Library - T174.7.C459 2012

Hayden Library - T174.7.M523 2015

Hayden Library - TK7874.85.M425 2014

Barker Library - TK7874.85.S45 2015

Hayden Library - TK7874.85.S473 2014

Hayden Library - T174.7.L36 2015

Online Resource

A 20-year-old aspiring actor- cum-model was arrested in the national capital for allegedly murdering a young woman IT professional a week ago after she refused to heed to his demand for money.

Police in Australia's Victoria state today inducted its first officer from Sikh community who will wear a newly designed police turban, a media report said today.

'I would like to play dark characters, like Khilji in Padmaavat.''But I have a problem, as the rapper inside me is a badass and I go deep into the character.''So even after the film ends, that character remains inside me for some time, which is really bad, because I start behaving like that.'

'Sometimes, I wish someone would tell me that this will happen at this point in time, so I know how my life will be. I don't know what my evening is like. I don't know what my tomorrow will be like. The uncertainty sometimes takes a toll on me.'

Moothon's script won the Sundance Institute's Global Filmmaking Award. Geethu Mohandas's movie is now coming to a theatre near you.

'The script, the way it has been written, the relationships, the intensity... everything was so powerful.'

'I believe there is room for everybody, and we have already shown what space we are fitting in. For instance, I can't do what Ananya (Panday) and Sara (Ali Khan) can do and vice versa.'

'Hopefully, I will become more evolved as a performer in the future.'

'I am making movies in a jiffy because I want to work with everyone.'

'The story has to be told well, it has to be marketed and presented well, and now, released well too.''Only then will the film do well.''The actor walks away with the victory credit, but we do not give enough credit to the script writers, directors and producers who put up a film that shines.'

Barker Library - TA439.C366 2012

Barker Library - TA440.E358 2012

Barker Library - TA444.F53 2015

Barker Library - TA443.P58 M63 2015

Barker Library - TA439.J36 2016

Barker Library - TA441.E286 2013

Barker Library - TA444.R43 2016

Barker Library - TA438.I58 2017

Barker Library - TA440.S85 2017

Barker Library - TA439.I584 2018

Online Resource

Hayden Library - QH505.L397 2019

Hayden Library - QH515.S46 2018

Hayden Library - QH438.7.C656 2017

Online Resource

[U.S.A] : Warner Bros. Home Entertainment, [2018]

Andy Serkis and Rupert Wyatt stopped by the Wired Cafe at Comic Con in San Diego to talk about the new film and how it's been updated for today'saudience.

We chat with the cast of Doctor Who on US response to the show, who they're most excited to see, and much more!

In the rugged backwoods of Vermont, inventor Jaimie Mantzel is constructing a monstrous spiderlike walking bot and shaping every piece by hand.

Angry Nerd has a bone to pick with the latest incarnation of Doctor Who. Since when did the Doctor care more about emotional truths than interstellar engineering feats? Angry Nerd thinks this 900-year-old Gallifreyan could use a little more galaxy-saving know-how and a little less bow tie.

Chris Baker responds to a few comments from viewers on his opinion of the latest incarnation of Doctor Who. The Angry Nerd respects people with the temerity to disagree with his opinions. But he respects them angrily.

Curious what it took to create the Doritos Locos Taco? Need Recipes for a vegan 'meat' feast? We've got the answers to that and more in the October 2013 issue of WIRED. Analyze the fifth taste, explore the world of bug sushi; chefs and researchers are engineering the cuisine of tomorrow. Also in this issue: Beyond - Two Souls, Cuarón, and a special tablet video with Bon Appétit! Online and on Tablets: 9.17.2013 On Newstands: 9.24.2013

Artist, Victor talks about the founding of his church and the history of the lands.