如何取消设置php.i中的cookie我点击退出按钮但不删除cookie

Question

setcookie("cookie_name",$_SESSION['useremail'],time()+3600,"/beta","studentsponge.com");
setcookie("cookie_id",$_SESSION['userid'],time()+3600,"/beta","studentsponge.com");

// and unset cookie i use this.
//in logout butten   

if(isset($_COOKIE))
{ 
    setcookie("cookie_name",null,time()-3600,"/beta",".studentsponge.com");
    setcookie("cookie_id",null,time()-3600,"/beta",".studentsponge.com");

    unset($_COOKIE['cookie_name']);
    unset($_COOKIE['cookie_id']);
}

Answer 1

just set the expire time in the past, then the cookie will expire:

setcookie("cookie_name", "cookie_value", 1);