基于PHP实现用户在线状态检测

这个是基于ThinkPHP框架的，其他的可以自己根据需求改

1.先新建一个tags.php文件，放在配置目录Conf下。

<?php/** 添加行为**/return array(\'action_begin\' => array(\'OnlineCheck\'),);?>

2.定义具体的功能

<?php/** 定义行为: 在线更新*/class OnlineCheckBehavior extends Behavior {//行为参数protected $options = array(\'ONLINE_CHECK\' => true, // 默认进行在线\'ONLINE_CHECK_TIME\' => 10, // 默认5分钟未活动，说明已下线);public function run(&$params) {if (C(\'ONLINE_CHECK\')) {// 更新sessionif ((session(\'?login_account\')) && (time() - session(\'access_time\') > 60)) {session(\'access_time\', time());}// 在线更新$ip = ip2long(get_client_ip());$online = M(\'Online\');// 先删除在线表中 超过5分钟未活动的记录//$sql = \' delete from __TABLE__ where \';$map[\'lasttime\'] = array(\'lt\', time() - C(\'ONLINE_CHECK_TIME\') * 60);$icount = $online->where($map)->delete();if (session(\'?login_account\')) { // 如果是登录用户$map = array();$map[\'uid\'] = session(\'login_uid\');$map[\'lastip\'] = $ip;$id = $online->where($map)->getField(\'id\');if (empty($id)) { // 不存在在线记录，则清空sessionsession(null);} else {$map = array();$map[\'id\'] = array(\'eq\', $id);$data[\'lasttime\'] = time();$data[\'lastip\'] = $ip;$online->where($map)->save($data);}} else { // 不是登录用户 游客unset($map);$map[\'lastip\'] = array(\'eq\', $ip);$id = $online->where($map)->getField(\'id\');//dump($id);if (empty($id)) { // 不存在在线记录， 则添加$data = array();$data[\'uid\'] = 0;$data[\'account\'] = \'Guest\';$data[\'nickname\'] = \'游客\';$data[\'lasttime\'] = time();$data[\'lastip\'] = $ip;$online->add($data);} else {$map = array();$map[\'id\'] = array(\'eq\', $id);$data[\'lasttime\'] = time();$data[\'lastip\'] = $ip;$online->where($map)->save($data);}}}}}?>

3.在具体的登录方法上添加

// 登录检测public function checkLogin() {// $this->redirect($url);$username = strtolower($this->_param(\'usr\'));$pwd = $this->_param(\'pwd\');$url = $this->_param(\'url\'); // 目标地址$is_error = false;if (empty($username) or empty($pwd)) {$this->assign(\'error_msg\', \'用户名和口令不能为空\');$is_error = true;}if (!$is_error) {$model = M(\'Usr\');$map[\'account\'] = $username;$map[\'upwd\'] = strtoupper(md5($pwd));$icount = $model->where($map)->count();if ($icount == 1) {$list = $model->where($map)->find();// 检测用户是否在线if ($this->isOnline($list[\'id\'])) {// <editor-fold defaultstate=\"collapsed\" desc=\"if开始\">if ($list[\'status\']) {session(\'login_account\', $username);session(\'login_nickname\', $list[\'nickname\']);session(\'last_time\', toDate($list[\'last_time\']));if ($list[\'last_ip\']) {session(\'last_ip\', long2ip($list[\'last_ip\']));} else {session(\'last_ip\', get_client_ip());}session(\'login_count\', $list[\'login_count\']);session(\'login_uid\', $list[\'id\']);session(\'login_pwd\', $list[\'upwd\']);session(\'access_time\', time()); //用户最后点击页面时间 session超时使用///$map[\'id\'] = $list[\'id\'];$data[\'last_time\'] = time();$data[\'last_ip\'] = ip2long(get_client_ip());$model->where($map)->save($data);$model->where($map)->setInc(\'login_count\', 1);// 检测是否有同一IP的记录，有更新，否则 添加$online = M(\'Online\');$map = array();$map[\'lastip\'] = ip2long(get_client_ip());$online_id = $online->where($map)->getField(\'id\');if (empty($online_id)) {// 插入在线用户表$data = array();$data[\'uid\'] = $list[\'id\'];$data[\'account\'] = $list[\'account\'];$data[\'nickname\'] = $list[\'nickname\'];$data[\'lasttime\'] = time();$data[\'lastip\'] = ip2long(get_client_ip());$online->add($data);}else{// 更新在线用户表$data = array();$data[\'uid\'] = $list[\'id\'];$data[\'account\'] = $list[\'account\'];$data[\'nickname\'] = $list[\'nickname\'];$data[\'lasttime\'] = time();//$data[\'lastip\'] = ip2long(get_client_ip());$online->where($map)->save($data);}} else {$is_error = true;$this->assign(\'error_msg\', \'此用户已被禁止登录！\');}// </editor-fold>  if 结束} else {$is_error = true;$this->assign(\'error_msg\', \'此用户名已在其他电脑登陆,请\' . C(\'ONLINE_CHECK_TIME\') .\'分钟后再试！\');}} else {$is_error = true;$this->assign(\'error_msg\', \'错误的用户名或口令！\');}}if ($is_error) {$this->display(\'login\');} else {$this->redirect(\'Index/index\');//      if (empty($url)) {//        $this->redirect(\'Index/index\');//      } else {//        $this->redirect($url);//      }}}/*** 检测用户是否在线* @access private* @param int $uid 用户ID* @return Boolean true=不在线*/private function isOnline($uid) {$ip = ip2long(get_client_ip());$online = M(\'Online\');$map[\'uid\'] = array(\'eq\', $uid);$list = $online->where($map)->find();if (empty($list)) { // 不存在return true;} else { // 存在，检测IP是否一致，否则，检测是否超过5分钟if ($list[\'lastip\'] == $ip) {return true;} else {if ($list[\'lasttime\'] < time() - C(\'ONLINE_CHECK_TIME\') * 60) {return true;} else {return false;}}}}

以上就是具体的PHP在线状态检测，同一时间只有一个用户可以存在，不过还没有考虑到非正常掉线等，cookie，session意外的处理，但是先分享出来吧

以上就是本文的全部内容，希望对大家的学习有所帮助

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