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定制php4的session功能(4) * You are free to use this library in any way you want, no warranties are
* expressed or implied. This works for me, but I don't guarantee that it
* works for you, USE AT YOUR OWN RISK.
*
* While not required to do so, I would appreciate it if you would retain
* this header information. If you make any modifications or improvements,
* please send them via email to Ying Zhang <ying@zippydesign.com>.
*
* ------------------------------------------------------------------------
* DESCRIPTION:
* ------------------------------------------------------------------------
* This library tells the PHP4 session handler to write to a DBM file
* instead of creating individual files for each session.
*
* ------------------------------------------------------------------------
* INSTALLATION:
* ------------------------------------------------------------------------
* Make sure you have DBM support compiled into PHP4. Then copy this
* script to a directory that is accessible by the rest of your PHP
* scripts.
*
* ------------------------------------------------------------------------
* USAGE:
* ------------------------------------------------------------------------
* Include this file in your scripts before you call session_start(), you
* don't have to do anything special after that.
*/
$SESS_DBM = "";
$SESS_LIFE = get_cfg_var("session.gc_maxlifetime");
function sess_open($save_path, $session_name) {
global $SESS_DBM;
$SESS_DBM = dbmopen("$save_path/$session_name", "c");
return ($SESS_DBM);
}
function sess_close() {
global $SESS_DBM;
dbmclose($SESS_DBM);
return true;
}
function sess_read($key) {
global $SESS_DBM, $SESS_LIFE;
$var = "";
if ($tmp = dbmfetch($SESS_DBM, $key)) {
$expires_at = substr($tmp, 0, strpos($tmp, "&brVBar"));
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