分析函数以了解如何解决问题，我不知道它是否有效，但如果函数给出两次检查会怎么样。

假设函数首先在前3分钟（180秒）内进行检查，并检测到用户处于脱机/非活动状态，直到那时，函数将解释用户刚刚离开。

当功能执行第二次检查并检测到用户处于非活动状态超过6分钟（360秒）时，用户将自动从缺席状态转到脱机状态。

我不擅长PHP，所以我不知道如何做到这一点：(

函数（functions.php）：

// Updates User Activity Status
add_action(\'init\', \'riverlab_users_status_init\');
add_action(\'admin_init\', \'riverlab_users_status_init\');
function riverlab_users_status_init(){
$logged_in_users = get_transient(\'users_status\'); // Capture users\' activities by wordpress transients
$user = wp_get_current_user(); // Capture of current user data
// Update the user if it is not in the list, or if it is not online for the last 3 minutes (180 seconds)
if ( !isset($logged_in_users[$user->ID][\'last\']) || $logged_in_users[$user->ID][\'last\'] <= time()-180 ){
$logged_in_users[$user->ID] = array(
\'id\' => $user->ID,
\'username\' => $user->user_login,
\'last\' => time(),
);
set_transient(\'users_status\', $logged_in_users, 180); // Set to expiry every 3 minutes (180 seconds)
}
}
// Check if someone is online in the last 3 minutes
function riverlab_is_user_online($id){
$logged_in_users = get_transient(\'users_status\');

return isset($logged_in_users[$id][\'last\']) && $logged_in_users[$id][\'last\'] > time()-180;
}
// Check the last time someone was online
function riverlab_user_last_online($id){
$logged_in_users = get_transient(\'users_status\');
if ( isset($logged_in_users[$id][\'last\']) ){
return $logged_in_users[$id][\'last\'];
} else {
return false;
}
}

<?php $id = get_the_author_meta( \'ID\' );
// this should be inside a post (single.php for example)
if ( riverlab_is_user_online($id) ) {
        echo \'<span class="tag-status tag-status-online"></span>\';
    } else {
        echo \'<span class="tag-status tag-status-offline"></span>\';
    }
?>