几种清除cookie有效方法(js,asp,php)

几种清除 cookie有效方法(网页特效asp教程php教程)
网页特效设置cookie过期时间
<script language="网页特效">

function setcookie(namedays)
{
var url = documentdomain;
var exp = new date();
expsettime(expgettime() + days****);
documentcookie = name + "="+ escape(url) +";expires="+ exptogmtstring();
}
setcookie(domain);
</script>

asp清除cookie

responsecookies("mycookie")expires= (now()+/)
responsecookies("mycookie")expires = dateadd("h" now())
responsecookies("cookiename")expires=dateadd("m"now())
php cookie

setcookie("memusername") 或 setcookie("memusername"""time()***);