added session_unset() fixed kill_session() and session_purge_old()

diff --git a/session.php b/session.php
index 7f5d52e..295c421 100644 (file)
--- a/session.php
+++ b/session.php
@@ -83,15 +83,26 @@ function session_touch($length = false) {
        db_update('wfpl_sessions', 'expires', $expires, 'where id=%i', $GLOBALS['session_id']);
 }
 
+# delete the current session
+function kill_session() {
+       if(!session_exists()) {
+           return;
+       }
+       _kill_session($GLOBALS['session_id']);
+}
+
+# for internal use. use kill_session() above
+function _kill_session($id) {
+       db_delete('wfpl_session_data', 'where session_id=%i', $id);
+       db_delete('wfpl_sessions', 'where id=%i', $id);
+}
+
 # delete expired sessions from database
 function session_purge_old() {
        $now = time();
        $exired_sessions = db_get_column('wfpl_sessions', 'id', 'where expires < %i', $now);
-       db_delete('wfpl_sessions', 'where expires < %i', $now);
-       if($expired_sessions) {
-               foreach($expired_sessions as $expired_session) {
-                       db_delete('wfpl_session_data', 'where session_id=%i', $expired_session);
-               }
+       if($expired_sessions) foreach($expired_sessions as $expired_session) {
+               _kill_session($expired_session);
        }
 }
 
@@ -136,21 +147,17 @@ function init_session() {
        }
 }
 
-# delete the current session
-function kill_session() {
-       if(!session_exists()) {
-               return;
-       }
-       db_delete('wfpl_session_data', 'where session_id=%i', $GLOBALS['session_id']);
-       db_delete('wfpl_sessions', 'where id=%i', $GLOBALS['session_id']);
-}
-
 # save a variable into the session
 function session_set($name, $value) {
-       db_delete('wfpl_session_data', 'where session_id=%i && name=%"', $GLOBALS['session_id'], $name);
+       session_unset($name);
        db_insert('wfpl_session_data', 'session_id,name,value', $GLOBALS['session_id'], $name, $value);
 }
 
+# remove variable from the session
+function session_unset($name) {
+       db_delete('wfpl_session_data', 'where session_id=%i && name=%"', $GLOBALS['session_id'], $name);
+}
+
 # get a variable into the session
 function session_get($name) {
        return db_get_value('wfpl_session_data', 'value', 'where session_id=%i && name=%"', $GLOBALS['session_id'], $name);