if(isset($_SESSION['username']))
{
$con = mysql_connect('localhost','root','');
mysql_select_db('chatbox',$con);
$result = mysql_query("SELECT id FROM users");
mysql_query("UPDATE users SET `online` = 0 WHERE `username` = ".$username."");
}
您能否使用户名是会话(已登录)等于
mysql_query("UPDATE users SET `online` = 0 WHERE `username` = "to_put_it_here");
最佳答案
简单可爱的把戏
$username = $_SESSION['username'];
if(isset($username))
{
$con = mysql_connect('localhost','root','');
mysql_select_db('chatbox',$con);
$result = mysql_query("SELECT id FROM users");
mysql_query("UPDATE users SET `online` = 0 WHERE `username` = '$username' ");
}