Classe d'opération des cookies
Fonction :
1. , lire, mettre à jour, effacer les données des cookies.
2. Le préfixe peut être défini.
3. Contrôle du délai d'attente forcé.
4. Les données des cookies peuvent être des chaînes, des tableaux, des objets, etc.
Cookies.class.php
<?php
/** Cookies class 保存,读取,更新,清除cookies数据。可设置前缀。强制超时。数据可以是字符串,数组,对象等。
* Date: 2013-12-22
* Author: fdipzone
* Ver: 1.0
*
* Func:
* public set 设置cookie
* public get 读取cookie
* public update 更新cookie
* public clear 清除cookie
* public setPrefix 设置前缀
* public setExpire 设置过期时间
* private authcode 加密/解密
* private pack 将数据打包
* private unpack 将数据解包
* private getName 获取cookie name,增加prefix处理
*/
class Cookies{ // class start
private $_prefix = ''; // cookie prefix
private $_securekey = 'ekOt4_Ut0f3XE-fJcpBvRFrg506jpcuJeixezgPNyALm'; // encrypt key
private $_expire = 3600; // default expire
/** 初始化
* @param String $prefix cookie prefix
* @param int $expire 过期时间
* @param String $securekey cookie secure key
*/
public function __construct($prefix='', $expire=0, $securekey=''){
if(is_string($prefix) && $prefix!=''){
$this->_prefix = $prefix;
}
if(is_numeric($expire) && $expire>0){
$this->_expire = $expire;
}
if(is_string($securekey) && $securekey!=''){
$this->_securekey = $securekey;
}
}
/** 设置cookie
* @param String $name cookie name
* @param mixed $value cookie value 可以是字符串,数组,对象等
* @param int $expire 过期时间
*/
public function set($name, $value, $expire=0){
$cookie_name = $this->getName($name);
$cookie_expire = time() + ($expire? $expire : $this->_expire);
$cookie_value = $this->pack($value, $cookie_expire);
$cookie_value = $this->authcode($cookie_value, 'ENCODE');
if($cookie_name && $cookie_value && $cookie_expire){
setcookie($cookie_name, $cookie_value, $cookie_expire);
}
}
/** 读取cookie
* @param String $name cookie name
* @return mixed cookie value
*/
public function get($name){
$cookie_name = $this->getName($name);
if(isset($_COOKIE[$cookie_name])){
$cookie_value = $this->authcode($_COOKIE[$cookie_name], 'DECODE');
$cookie_value = $this->unpack($cookie_value);
return isset($cookie_value[0])? $cookie_value[0] : null;
}else{
return null;
}
}
/** 更新cookie,只更新内容,如需要更新过期时间请使用set方法
* @param String $name cookie name
* @param mixed $value cookie value
* @return boolean
*/
public function update($name, $value){
$cookie_name = $this->getName($name);
if(isset($_COOKIE[$cookie_name])){
$old_cookie_value = $this->authcode($_COOKIE[$cookie_name], 'DECODE');
$old_cookie_value = $this->unpack($old_cookie_value);
if(isset($old_cookie_value[1]) && $old_cookie_value[1]>0){ // 获取之前的过期时间
$cookie_expire = $old_cookie_value[1];
// 更新数据
$cookie_value = $this->pack($value, $cookie_expire);
$cookie_value = $this->authcode($cookie_value, 'ENCODE');
if($cookie_name && $cookie_value && $cookie_expire){
setcookie($cookie_name, $cookie_value, $cookie_expire);
return true;
}
}
}
return false;
}
/** 清除cookie
* @param String $name cookie name
*/
public function clear($name){
$cookie_name = $this->getName($name);
setcookie($cookie_name);
}
/** 设置前缀
* @param String $prefix cookie prefix
*/
public function setPrefix($prefix){
if(is_string($prefix) && $prefix!=''){
$this->_prefix = $prefix;
}
}
/** 设置过期时间
* @param int $expire cookie expire
*/
public function setExpire($expire){
if(is_numeric($expire) && $expire>0){
$this->_expire = $expire;
}
}
/** 获取cookie name
* @param String $name
* @return String
*/
private function getName($name){
return $this->_prefix? $this->_prefix.'_'.$name : $name;
}
/** pack
* @param Mixed $data 数据
* @param int $expire 过期时间 用于判断
* @return
*/
private function pack($data, $expire){
if($data===''){
return '';
}
$cookie_data = array();
$cookie_data['value'] = $data;
$cookie_data['expire'] = $expire;
return json_encode($cookie_data);
}
/** unpack
* @param Mixed $data 数据
* @return array(数据,过期时间)
*/
private function unpack($data){
if($data===''){
return array('', 0);
}
$cookie_data = json_decode($data, true);
if(isset($cookie_data['value']) && isset($cookie_data['expire'])){
if(time()<$cookie_data['expire']){ // 未过期
return array($cookie_data['value'], $cookie_data['expire']);
}
}
return array('', 0);
}
/** 加密/解密数据
* @param String $str 原文或密文
* @param String $operation ENCODE or DECODE
* @return String 根据设置返回明文活密文
*/
private function authcode($string, $operation = 'DECODE'){
$ckey_length = 4; // 随机密钥长度 取值 0-32;
$key = $this->_securekey;
$key = md5($key);
$keya = md5(substr($key, 0, 16));
$keyb = md5(substr($key, 16, 16));
$keyc = $ckey_length ? ($operation == 'DECODE' ? substr($string, 0, $ckey_length): substr(md5(microtime()), -$ckey_length)) : '';
$cryptkey = $keya.md5($keya.$keyc);
$key_length = strlen($cryptkey);
$string = $operation == 'DECODE' ? base64_decode(substr($string, $ckey_length)) : sprintf('%010d', 0).substr(md5($string.$keyb), 0, 16).$string;
$string_length = strlen($string);
$result = '';
$box = range(0, 255);
$rndkey = array();
for($i = 0; $i <= 255; $i++) {
$rndkey[$i] = ord($cryptkey[$i % $key_length]);
}
for($j = $i = 0; $i < 256; $i++) {
$j = ($j + $box[$i] + $rndkey[$i]) % 256;
$tmp = $box[$i];
$box[$i] = $box[$j];
$box[$j] = $tmp;
}
for($a = $j = $i = 0; $i < $string_length; $i++) {
$a = ($a + 1) % 256;
$j = ($j + $box[$a]) % 256;
$tmp = $box[$a];
$box[$a] = $box[$j];
$box[$j] = $tmp;
$result .= chr(ord($string[$i]) ^ ($box[($box[$a] + $box[$j]) % 256]));
}
if($operation == 'DECODE') {
if((substr($result, 0, 10) == 0 || substr($result, 0, 10) - time() > 0) && substr($result, 10, 16) == substr(md5(substr($result, 26).$keyb), 0, 16)) {
return substr($result, 26);
} else {
return '';
}
} else {
return $keyc.str_replace('=', '', base64_encode($result));
}
}
} // class end
?>Copier après la connexion
demo.php
<?php
require 'Cookies.class.php';
$type = isset($_GET['type'])? strtolower($_GET['type']) : '';
if(!in_array($type, array('set','get','update','clear'))){
exit('type not exists');
}
$obj = new Cookies('member', 10); // obj
switch($type){
case 'set': // 设置
$data = array(
'name' => 'fdipzone',
'gender' => 'male'
);
$obj->set('me', $data, 5);
echo 'set cookies';
break;
case 'get': // 读取
$result = $obj->get('me');
echo '<pre class="brush:php;toolbar:false">';
print_r($result);
echo '';
echo 'get cookies';
break;
case 'update': // 更新
$data = array(
'name' => 'angelababy',
'gender' => 'female'
);
$flag = $obj->update('me', $data);
if($flag){
echo 'update cookies success';
}else{
echo 'update cookies false';
}
break;
case 'clear': // 清除
$obj->clear('me');
echo 'clear cookies';
break;
}
?>
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