session_cache_expire

Return current cache expire (PHP 4 >= 4.2.0, PHP 5)
int session_cache_expire ( [int new_cache_expire] )

Example 2222. session_cache_expire() example

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<?php

/* set the cache limiter to 'private' */

session_cache_limiter('private');
$cache_limiter = session_cache_limiter();

/* set the cache expire to 30 minutes */
session_cache_expire(30);
$cache_expire = session_cache_expire();

/* start the session */

session_start();


echo "The cache limiter is now set to $cache_limiter<br />";

echo "The cached session pages expire after $cache_expire minutes";
?>

Code Examples / Notes » session_cache_expire

info

you can change the max lifetime for a session with the function ini_set(). <?php ini_set("session.gc_maxlifetime", "18000"); ?> This will set the max lifetime of the script to 5 hours. You have to use this in every script that you want to change the default lifetime for. if you want to know the lifetime of your current script, you can use: <?php echo ini_get("session.gc_maxlifetime"); ?>

lance_rushing

I've encountered the same problem of loosing focus when using IE and a javascript window.location.refresh/replace(). After fusing around I found that a <meta http-equiv="refresh" content="600"> works without move the focus on the parent frame's form. The down side is loading up the browser history and an annoying 'click' in IE on the page load.

lukasz

I had a problem with session expiration time on a server where I didn't have access to php.ini. My solution was to use session_save_path with my own dir.

bermi·ferrer· ·at· ·akelos· no·spam ·com

Hello, Some of my customers asked me for a solution form their session not to expire when filling large forms. Sometimes it takes them more than 2 hours to submit (phone, desk customers...). I know I could have forced an ilayer to be refreshed dynamically and then include PHP code using session_cache_expire() function, but this refreshing a page changes the form focus. So I found this the only solution for them not to loose focus over their form element. You can make a session not to expire by using this code. Its a mixture of PHP and JavaScript and can be used on the same page were your code goes or it can be called using an ilayer/iframe from your page. I know this is not the best practice, but in some cases were user has no control over server globals and security is not important this can help. Here is the code. <? //First of all we prevent browsers from caching the image header("Cache-Control: no-store, no-cache, must-revalidate"); header("Cache-Control: post-check=0, pre-check=0", false); header("Pragma: no-cache"); header("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); //This piece of code returns a blank gif if($_GET[img] > 0){ header('Content-Type: image/gif'); header("Content-Disposition: inline; filename=".time().".gif"); echo base64_decode(str_replace("\n",""," R0lGODlhAQABAPcAAAAAAAAAQAAAgAAA/ wAgAAAgQAAggAAg/wBAAABAQABAgABA/ wBgAABgQABggABg/wCAAACAQACAgACA/ wCgAACgQACggACg/wDAAADAQADAgADA/ wD/AAD/QAD/gAD//yAAACAAQCAAgCAA/ yAgACAgQCAggCAg/yBAACBAQCBAgCBA/ yBgACBgQCBggCBg/yCAACCAQCCAgCCA/ yCgACCgQCCggCCg/yDAACDAQCDAgCDA/ yD/ACD/QCD/gCD//0AAAEAAQEAAgEAA/ 0AgAEAgQEAggEAg/0BAAEBAQEBAgEBA/ 0BgAEBgQEBggEBg/0CAAECAQECAgECA/ 0CgAECgQECggECg/0DAAEDAQEDAgEDA/ 0D/AED/QED/gED//2AAAGAAQGAAgGAA/ 2AgAGAgQGAggGAg/2BAAGBAQGBAgGBA/ 2BgAGBgQGBggGBg/2CAAGCAQGCAgGCA/ 2CgAGCgQGCggGCg/2DAAGDAQGDAgGDA/ 2D/AGD/QGD/gGD//4AAAIAAQIAAgIAA/ 4AgAIAgQIAggIAg/4BAAIBAQIBAgIBA/ 4BgAIBgQIBggIBg/4CAAICAQICAgICA/ 4CgAICgQICggICg/4DAAIDAQIDAgIDA/ 4D/AID/QID/gID//6AAAKAAQKAAgKAA/ 6AgAKAgQKAggKAg/6BAAKBAQKBAgKBA/ 6BgAKBgQKBggKBg/6CAAKCAQKCAgKCA/ 6CgAKCgQKCggKCg/6DAAKDAQKDAgKDA/ 6D/AKD/QKD/gKD//8AAAMAAQMAAgMAA/ 8AgAMAgQMAggMAg/8BAAMBAQMBAgMBA/ 8BgAMBgQMBggMBg/8CAAMCAQMCAgMCA/ 8CgAMCgQMCggMCg/8DAAMDAQMDAgMDA/ 8D/AMD/QMD/gMD///8AAP8AQP8AgP8A/ /8gAP8gQP8ggP8g//9AAP9AQP9AgP9A/ /9gAP9gQP9ggP9g//+AAP+AQP+AgP+A/ /+gAP+gQP+ggP+g///AAP/AQP/AgP/A/ ///AP//QP//gP///yH5BAEAAP8ALAAAA AABAAEAAAgEAP8FBAA7")); exit; } ?>  <img name="keepUpdated" src="<?=$_SELF?>?img=999"> <script language="Javascript">  </script> I hope this can be helpful for someone. Bermi Ferrer

djmaze

After recieving a "bogus" mark on a bug report i've tried to find out the differences between cache_expire and what was causing a session delete after 24 minutes. cache_expire is used for cached session pages and has nothing to do with the session data The garbage collector controls the session data and destroys sessions which are older then 1440 seconds (24 minutes) by default. So to keep a session alive longer then 24 minutes (for example when a visitor tries to POST a huge message that took him 1 hour to type), you must modify the session.gc_maxlifetime thru ini_set() Somehow i couldn't find anything in the PHP documentation regarding this and due to that me (and i think many others) got the wrong ideas regarding PHP sessions. A few examples to fix session timeout are already posted below but in my opinion they all missed session.gc_maxlifetime

Change Language

session_cache_expire
session_cache_limiter
session_commit
session_decode
session_destroy
session_encode
session_get_cookie_params
session_id
session_is_registered
session_module_name
session_name
session_regenerate_id
session_register
session_save_path
session_set_cookie_params
session_set_save_handler
session_start
session_unregister
session_unset
session_write_close

session_cache_expire

Return current cache expire (PHP 4 >= 4.2.0, PHP 5) int session_cache_expire ( [int new_cache_expire] )

Example 2222. session_cache_expire() example

Code Examples / Notes » session_cache_expire

Change Language

Return current cache expire (PHP 4 >= 4.2.0, PHP 5)
int session_cache_expire ( [int new_cache_expire] )