分享一个php cookie操作的类，可以设置cookie、获取cookie、删除cookie。

代码：

/**

* php cookie类

* class：PHP_COOKIE

* by www.jbxue.com

*/

class PHP_COOKIE

{

var $_name = "";

var $_val = array();

var $_expires;

var $_dir = '/';// all dirs

var $_site = '';

function PHP_COOKIE($cname, $cexpires="", $cdir="/", $csite="")

{

$this->_name=$cname;

if($cexpires){

$this->_expires=$cexpires;

}

else{

$this->_expires=time() + 60*60*24*30*12; // ~12 months

}

$this->_dir=$cdir;

$this->_site=$csite;

$this->_val=array();

$this->extract();

}

function extract($cname="")

{

if(!isset($_COOKIE)){

global $_COOKIE;

$_COOKIE=$GLOBALS["HTTP_COOKIE_VARS"];

}

if(empty($cname) && isset($this)){

$cname=$this->_name;

}

if(!empty($_COOKIE[$cname])){

if(get_magic_quotes_gpc()){

$_COOKIE[$cname]=stripslashes($_COOKIE[$cname]);

}

$arr=unserialize($_COOKIE[$cname]);

if($arr!==false && is_array($arr)){

foreach($arr as $var => $val){

$_COOKIE[$var]=$val;

if(isset($GLOBALS["PHP_SELF"])){

$GLOBALS[$var]=$val;

}

}

}

if(isset($this)) $this->_val=$arr;

}

// 在全局范围内移除cookie

unset($_COOKIE[$cname]);

unset($GLOBALS[$cname]);

}

function put($var, $value)

{

$_COOKIE[$var]=$value;

$this->_val["$var"]=$value;

if(isset($GLOBALS["PHP_SELF"])){

$GLOBALS[$var]=$value;

}

if(empty($value)){

unset($this->_val[$var]);

}

}

function clear()

{

$this->_val=array();

}

function set()

{

if(empty($this->_val)){

$cookie_val="";

}

else {

$cookie_val=serialize($this->_val);

}

if(strlen($cookie_val)>4*1024){

trigger_error("The cookie $this->_name exceeds the specification for the maximum cookie size. Some data may be lost", E_USER_WARNING);

}

setcookie("$this->_name", $cookie_val, $this->_expires, $this->_dir, $this->_site);

}

}

?>

调用示例：

1，设置cookie

//cookie操作类

include("class.cookie.php");

// Create a local object

$PHP_COOKIE=new PHP_COOKIE("test_cookie");

// Add the variables to be saved in the cookie

$PHP_COOKIE->put("namefirst","Jo");

$PHP_COOKIE->put("namelast","Foo");

$PHP_COOKIE->put("number","1234");

$PHP_COOKIE->put("time",time());

// Set the cookie

$PHP_COOKIE->set();

$PHP_COOKIE=new PHP_COOKIE("test_cookie 123");

// Add the variables to be saved in the cookie

$PHP_COOKIE->put("namefirst","Jo123");

$PHP_COOKIE->put("namelast","Foo13");

$PHP_COOKIE->put("number","123413");

// Set the cookie

$PHP_COOKIE->set();

echo "
The values saved in the cookie test_cookie are:";

echo "
namefirst: = $_COOKIE[namefirst]";

echo "
namelast: = $_COOKIE[namelast]";

echo "
number: = $_COOKIE[number]";

echo "
time: = $_COOKIE[time]";

echo "
END";

?>

2，获取cookie

include("class.cookie.php");

//获取cookie

//从保存的cookie中解析变量，然后加入自己的cookies中

PHP_COOKIE::extract("test_cookie");

//显示cookie

echo "
显示用于测试的一些cookie值" ;

echo "
Name: ";

echo $_COOKIE['namefirst'];

echo " ";

echo $_COOKIE['namelast'];

echo "
Number: ";

echo $_COOKIE['number'];

echo "
Time: ";

echo $_COOKIE['time'];

echo "
END";

?>

3，删除cookie

include("class.cookie.php");

//删除cookie

//方法1. 设置cookie过期时间

//方法2. 调用 clear()与 set()方法

// Create a local object

$PHP_COOKIE=new PHP_COOKIE("test_cookie", time()-86400);

// Set the cookie

$PHP_COOKIE->set();

// Clear all values

#$PHP_COOKIE->clear();

?>