Re: sessions and trans-sid problem/question

On Friday 22 November 2002 16:28, Jean-Christian Imbeault wrote: > Ernest E Vogelsinger wrote: > > This is controlled by the session.gc_probability value in your INI file > > I know I can probably find this in the documentation somewhere but ... > how do I set the expire time on a session? > > > Increasing this value will make this > > process more often, setting it to 100 will have PHP run the garbage > > collector every time a PHP script gets executed (you shouldn't do this - > > think in concurrency terms...) > > Again, why would congruency be affected by the gc? If the session hasn't > timed-out then the gc won't clean it up. If it has then it's ok to clean > it up. I obviously am missing something has what you say seems to make > sense but I can see it just yet :) If you set it 100, then _every_ request in which sessions are used, PHP has to go through all the session files (by default stored in /tmp) and check whether they have expired. If you have a busy server you could have thousands of session files. Checking thousands of files at each request is very time consuming. -- Jason Wong -> Gremlins Associates -> www.gremlins.biz Open Source Software Systems Integrators * Web Design & Hosting * Internet & Intranet Applications Development * /* Traffic jam on the Information Superhighway. */