php中将session保存到数据库的代码
发布时间:2020-05-25 07:18:22 所属栏目:PHP 来源:互联网
导读:php中将session保存到数据库的代码
下面是脚本之家 jb51.cc 通过网络收集整理的代码片段。 脚本之家小编现在分享给大家,也给大家做个参考。 <?php // // 'sessions' table schema // create table sessions ( // session_id char(32) not null,// session_data text not null,// session_expiration int(11) unsigned not null,// primary key (session_id)); // include_once 'DB.php'; // Global Variables $dbh = NULL; function on_session_start ($save_path,$session_name) { global $dbh; $dbh = DB::connect('mysql://user:[emailprotected]/SITE_SESSIONS',true); if (DB::isError($dbh)) { die(sprintf('Error [%d]: %s',$dbh->getCode(),$dbh->getMessage())); } } function on_session_end () { // Nothing needs to be done in this function // since we used persistent connection. } function on_session_read ($key) { global $dbh; $stmt = "select session_data from sessions"; $stmt .= " where session_id = '$key'"; $stmt .= " and session_expiration > now()"; $sth = $dbh->query($sth); $row = $sth->fetchRow(DB_FETCHMODE_ASSOC); return $row['session_data']; } function on_session_write ($key,$val) { global $dbh; $val = addslashes($val); $insert_stmt = "insert into sessions values('$key','$val',now() + 3600)"; $update_stmt = "update sessions set session_data = '$val',"; $update_stmt .= "session_expiration = now() + 3600 "; $update_stmt .= "where session_id = '$key'"; // First we try to insert,if that doesn't succeed,it means // session is already in the table and we try to update if (DB::isError($dbh->query($insert_stmt))) $dbh->query($update_stmt); } function on_session_destroy ($key) { global $dbh; $stmt = "delete from sessions where session_id = '$key'"; $dbh->query($stmt); } function on_session_gc ($max_lifetime) { global $dbh; // In this example,we don't use $max_lifetime parameter // We simply delete all sessions that have expired $stmt = "delete from sessions where session_expiration < now()"; $dbh->query($stmt); } session_start (); // Register the $counter variable as part // of the session session_register ("counter"); // Set the save handlers session_set_save_handler ("on_session_start","on_session_end","on_session_read","on_session_write","on_session_destroy","on_session_gc"); // Let's see what it does $counter++; print $counter; session_destroy(); ?> 以上是脚本之家(jb51.cc)为你收集整理的全部代码内容,希望文章能够帮你解决所遇到的程序开发问题。 如果觉得脚本之家网站内容还不错,欢迎将脚本之家网站推荐给程序员好友。 (编辑:安卓应用网) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |