RE: [PHP] Using unset with $_SESSION

On 27 January 2004 16:20, trlists@clayst.com wrote: > On 27 Jan 2004 Stuart wrote: > > > In that case, try this... > > > > foreach (array_keys($_SESSION) as $key) > > unset($_SESSION[$key]); > > Yes, I had tried that but forgot to mention it. It does work. > > However, I'm still mystified as to why unset($_SESSION) not only > doesn't remove old data from the sesison file when the script exits, > but prevents the new variable I create after that from being saved. > > Perhaps $_SESSION as created by PHP is special and is tied to the > session storage, whereas if it is destroyed with unset and then > recreated that link is lost. That would explain the behavior. Yes, that is exactly the case. You might like to take a look at session_write_close() (http://www.php.net/session-write-close) in addition to the other recommendations. Cheers! Mike --------------------------------------------------------------------- Mike Ford, Electronic Information Services Adviser, Learning Support Services, Learning & Information Services, JG125, James Graham Building, Leeds Metropolitan University, Beckett Park, LEEDS, LS6 3QS, United Kingdom Email: m.ford@leedsmet.ac.uk Tel: +44 113 283 2600 extn 4730 Fax: +44 113 283 3211