如何清除COOKIE?(急急急)

Question

SetCookie("user","$username",0,"/");
后，当浏览器关闭时cookie不保存成文件。只要你再入时SetCookie前并无cookie变量“清除怎么不起作用呀”是什么意思？

Answer 1

点击"注销"就清除cookie,
   setcookie("user","",0,"/");登陆时,判断cookie值是否存在.
   $user = $_COOKIE['user'];
   if( empty($user) ){
          echo "请登陆!........";     //填写用户名,密码之类的东东,
   }else{
          echo "欢迎";
          setcookie("user",$user,0,"/");
   }

Answer 2

setcookie("user","",now,"/");
只要关闭了网页，就自动清除了

Answer 3

setcookie(”user“)直接这样也可以吧