php 设置cookie与清除cookie方法

时间：2015-01-23 来源：西部数据作者：西部数据

setcookie（）函数定义一个cookie被发送的http头的其余部分一起,像其他头,饼干之前,必须发送从你的脚本,这是一个协议限制输出,这就需要你的地方调用这个函数之前,任何输出,包括<html>和<head>标签以及任何空格.

一旦饼干已经确定,他们可以访问下一页上加载了$ _cookie或$ http_cookie_vars数组,请注意,如超全局变量$ _cookie形式适用于php的4.1.0,cookie的值也存在于$ _request数组,代码如下:

bool setcookie ( string $name [, string $value [, int $expire = 0 [, string $path [, string $domain [, bool $secure = false [, bool $httponly = false ]]]]]] )

function makecookie($var, $value, $life = 0, $prefix = 0) //设置cookie

{

global $cookiepre, $cookiedomain, $cookiepath, $timestamp, $_server;

setcookie(($prefix ? $cookiepre : '').$var, $value,

$life ? $timestamp + $life : 0, $cookiepath,

$cookiedomain, $_server['server_port'] == 443 ? 1 : 0);

}

function clearcookies() //清除cookie

{

global $uid, $username, $pw, $adminid;

makecookie('auth', '', -86400 * 365);

$uid = $adminid = 0;

$username = $pw = '';

}

//实例代码如下:

makecookie('111','www.phpfensi.com');

//清除cookie

clearcookies();

//下面兴一个支持二级域名cookie函数吧。

function setcookielive($name, $value='', $expire=0, $path='', $domain='', $secure=false, $httponly=false) {

    //set a cookie as usual, but also add it to $_cookie so the current page load has access

    $_cookie[$name] = $value;

    return setcookie($name,$value,$expire,$path,$domain,$secure,$httponly);

}

//调用方法,代码如下:

setcookielive('webab','111cn',time()+86000,'/','111cn.net');

//一入门级cookie设置方法

setcookie("cookie[three]", "cookiethree");

setcookie("cookie[two]", "cookietwo");

setcookie("cookie[one]", "cookieone");

// after the page reloads, print them out

if (isset($_cookie['cookie'])) {

    foreach ($_cookie['cookie'] as $name => $value) {

        echo "$name : $value <br /> ";

    }

}