php中cookie的使用方法

2024-11-05 04:25:36

1、创建/更新cookiesetCookie($cookieName,$value,time()+秒数);例子:创建一个cookie,名字为UserName,值为zs,过期时间为2个星期setcookie("UserName","zs",time()+2*7*24*3600);

2、取cookie的值$_cookie[$cookieName];取出UserName的值,放在变量$uName中$uName=$_COOKIE['UserName'];取值的时候,一般会先判断是否为空,再进行取值操作。上面的取值操作一般这样写:if (!empty($_COOKIE['UserName'])){$uName=$_COOKIE['UserName'];}

3、删除指定cookiesetcookie($cookieName,value,time()-秒数);//或者setcookie($cookiename, '');//或者setcookie($cookiename, NULL);例子:删除UserNamesetcookie("UserName","zs",time()-3600);

4、删除当前会话的所有cookieforeach($_COOKIE as $key=>$val){setcookie($key,"",time()-100);}

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