php中setcookie() 函数用法介绍-php教程

setcookie() 函数是php中一个用来设置cookie值的一个函数,下面我来总结一下setcookie() 函数的具体用法以及设置之后怎么获取cookie的值.

setcookie() 函数向客户端发送一个 HTTP cookie.cookie 是由服务器发送到浏览器的变量.cookie 通常是服务器嵌入到用户计算机中的小文本文件.每当计算机通过浏览器请求一个页面,就会发送这个 cookie.

cookie 的名称指定为相同名称的变量.例如,如果被发送的 cookie 名为 "name",会自动创建名为 $user 的变量,包含 cookie 的值.

必须在任何其他输出发送前对 cookie 进行赋值.如果成功,则该函数返回 true,否则返回 false.

语法

setcookie(name,value,expire,path,domain,secure)

实例代码如下:

makecookie('111','www.111cn.net');
//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
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 />n";
}
}

js获取 cookie方法实例代码如下:

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<script type="text/javascript">
//get cookie
function getCookie(name) {
var nameEQ = name + "=";
var ca = document.cookie.split(';');
for(var i=0;i < ca.length;i++) {
var c = ca[i];
while (c.charAt(0)==' ') {
c = c.substring(1,c.length);
}
if (c.indexOf(nameEQ) == 0) {
return unescape(c.substring(nameEQ.length,c.length));
}
}
return false;
}
//clear cookie
function clearCookie(name) {
setCookie(name, "", -1);
}
//set cookie
function setCookie(name, value, seconds) {
seconds = seconds || 0;
var expires = "";
if (seconds != 0 ) {
var date = new Date();
date.setTime(date.getTime()+(seconds*1000));
expires = "; expires="+date.toGMTString();
}
document.cookie = name+"="+escape(value)+expires+"; path=/";
}
alert(getCookie('test2'));
</script>
</body>
</html>

php中setcookie() 函数用法介绍

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