php cookie类(设置、获取、删除cookie值)

本文介绍下，一个功能强大的php cookie操作类，可以完成设置cookie、获取cookie值、删除cookie值等操作，有需要的朋友参考下。

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

代码：

<?php
/**
* php cookie类
* class：PHP_COOKIE
* by bbs.it-home.org
*/
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

<?php
//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 "<br>The values saved in the cookie test_cookie are:";
echo "<br>namefirst: = $_COOKIE[namefirst]";
echo "<br>namelast: = $_COOKIE[namelast]";
echo "<br>number: = $_COOKIE[number]";
echo "<br>time: = $_COOKIE[time]";
echo "<br><br>END";
?>

2，获取cookie

<?php
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 "<BR>显示用于测试的一些cookie值" ;
echo "<br> Name: ";
echo $_COOKIE['namefirst'];
echo " ";
echo $_COOKIE['namelast'];
echo "<br> Number: ";
echo $_COOKIE['number'];
echo "<br> Time: ";
echo $_COOKIE['time'];

echo "<br><br>END";
?>

3，删除cookie

<?php
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();
?>