php Cookies操作类(附源码)

2. /** 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。
3. * Date: 2013-12-22
4. * Author: fdipzone
5. * Ver: 1.0
6. * Edit: bbs.it-home.org
7. * Func:
8. * public set 设置cookie
9. * public get 读取cookie
10. * public update 更新cookie
11. * public clear 清除cookie
12. * public setPrefix 设置前缀
13. * public setExpire 设置过期时间
14. * private authcode 加密/解密
15. * private pack 将数据打包
16. * private unpack 将数据解包
17. * private getName 获取cookie name,增加prefix处理
18. */
20. class Cookies{ // class start
21. private $_prefix = ''; // cookie prefix
22. private $_securekey = 'ekOt4_Ut0f3XE-fJcpBvRFrg506jpcuJeixezgPNyALm'; // encrypt key
23. private $_expire = 3600; // default expire
25. /** 初始化
26. * @param String $prefix cookie prefix
27. * @param int $expire 过期时间
28. * @param String $securekey cookie secure key
29. */
30. public function __construct($prefix='', $expire=0, $securekey=''){
32. if(is_string($prefix) && $prefix!=''){
33. $this->_prefix = $prefix;
34. }
36. if(is_numeric($expire) && $expire>0){
37. $this->_expire = $expire;
38. }
40. if(is_string($securekey) && $securekey!=''){
41. $this->_securekey = $securekey;
42. }
43. }
45. /** 设置cookie
46. * @param String $name cookie name
47. * @param mixed $value cookie value 可以是字符串,数组,对象等
48. * @param int $expire 过期时间
49. */
50. public function set($name, $value, $expire=0){
52. $cookie_name = $this->getName($name);
53. $cookie_expire = time() + ($expire? $expire : $this->_expire);
54. $cookie_value = $this->pack($value, $cookie_expire);
55. $cookie_value = $this->authcode($cookie_value, 'ENCODE', $this->_securekey);
57. if($cookie_name && $cookie_value && $cookie_expire){
58. setcookie($cookie_name, $cookie_value, $cookie_expire);
59. }
60. }
62. /** 读取cookie
63. * @param String $name cookie name
64. * @return mixed cookie value
65. */
66. public function get($name){
68. $cookie_name = $this->getName($name);
70. if(isset($_COOKIE[$cookie_name])){
72. $cookie_value = $this->authcode($_COOKIE[$cookie_name], 'DECODE', $this->_securekey);
73. $cookie_value = $this->unpack($cookie_value);
75. return isset($cookie_value[0])? $cookie_value[0] : null;
77. }else{
78. return null;
79. }
80. }
82. /** 更新cookie,只更新内容,如需要更新过期时间请使用set方法
83. * @param String $name cookie name
84. * @param mixed $value cookie value
85. * @return boolean
86. */
87. public function update($name, $value){
88. $cookie_name = $this->getName($name);
90. if(isset($_COOKIE[$cookie_name])){
91. $old_cookie_value = $this->authcode($_COOKIE[$cookie_name], 'DECODE', $this->_securekey);
92. $old_cookie_value = $this->unpack($old_cookie_value);
94. if(isset($old_cookie_value[1]) && $old_cookie_vlaue[1]>0){ // 获取之前的过期时间
96. $cookie_expire = $old_cookie_value[1];
98. // 更新数据
99. $cookie_value = $this->pack($value, $cookie_expire);
100. $cookie_value = $this->authcode($cookie_value, 'ENCODE', $this->_securekey);
102. if($cookie_name && $cookie_value && $cookie_expire){
103. setcookie($cookie_name, $cookie_value, $cookie_expire);
104. return true;
105. }
106. }
107. }
108. return false;
109. }
111. /** 清除cookie
112. * @param String $name cookie name
113. */
114. public function clear($name){
115. $cookie_name = $this->getName($name);
116. setcookie($cookie_name);
117. }
119. /** 设置前缀
120. * @param String $prefix cookie prefix
121. */
122. public function setPrefix($prefix){
123. if(is_string($prefix) && $prefix!=''){
124. $this->_prefix = $prefix;
125. }
126. }
128. /** 设置过期时间
129. * @param int $expire cookie expire
130. */
131. public function setExpire($expire){
132. if(is_numeric($expire) && $expire>0){
133. $this->_expire = $expire;
134. }
135. }
137. /** 获取cookie name
138. * @param String $name
139. * @return String
140. */
141. private function getName($name){
142. return $this->_prefix? $this->_prefix.'_'.$name : $name;
143. }
145. /** pack
146. * @param Mixed $data 数据
147. * @param int $expire 过期时间 用于判断
148. * @return
149. */
150. private function pack($data, $expire){
151. if($data===''){
152. return '';
153. }
155. $cookie_data = array();
156. $cookie_data['value'] = $data;
157. $cookie_data['expire'] = $expire;
158. return json_encode($cookie_data);
159. }
161. /** unpack
162. * @param Mixed $data 数据
163. * @return array(数据,过期时间)
164. */
165. private function unpack($data){
166. if($data===''){
167. return array('', 0);
168. }
170. $cookie_data = json_decode($data, true);
171. if(isset($cookie_data['value']) && isset($cookie_data['expire'])){
172. if(time() return array($cookie_data['value'], $cookie_data['expire']);
173. }
174. }
175. return array('', 0);
176. }
178. /** 加密/解密数据
179. * @param String $str 原文或密文
180. * @param String $operation ENCODE or DECODE
181. * @return String 根据设置返回明文活密文
182. */
183. private function authcode($string, $operation = 'DECODE'){
184. $ckey_length = 4; // 随机密钥长度 取值 0-32;
185. $key = $this->_securekey;
187. $key = md5($key);
188. $keya = md5(substr($key, 0, 16));
189. $keyb = md5(substr($key, 16, 16));
190. $keyc = $ckey_length ? ($operation == 'DECODE' ? substr($string, 0, $ckey_length): substr(md5(microtime()), -$ckey_length)) : '';
192. $cryptkey = $keya.md5($keya.$keyc);
193. $key_length = strlen($cryptkey);
195. $string = $operation == 'DECODE' ? base64_decode(substr($string, $ckey_length)) : sprintf('%010d', 0).substr(md5($string.$keyb), 0, 16).$string;
196. $string_length = strlen($string);
198. $result = '';
199. $box = range(0, 255);
201. $rndkey = array();
202. for($i = 0; $i $rndkey[$i] = ord($cryptkey[$i % $key_length]);
203. }
205. for($j = $i = 0; $i $j = ($j + $box[$i] + $rndkey[$i]) % 256;
206. $tmp = $box[$i];
207. $box[$i] = $box[$j];
208. $box[$j] = $tmp;
209. }
211. for($a = $j = $i = 0; $i $a = ($a + 1) % 256;
212. $j = ($j + $box[$a]) % 256;
213. $tmp = $box[$a];
214. $box[$a] = $box[$j];
215. $box[$j] = $tmp;
216. $result .= chr(ord($string[$i]) ^ ($box[($box[$a] + $box[$j]) % 256]));
217. }
219. if($operation == 'DECODE') {
220. if((substr($result, 0, 10) == 0 || substr($result, 0, 10) - time() > 0) && substr($result, 10, 16) == substr(md5(substr($result, 26).$keyb), 0, 16)) {
221. return substr($result, 26);
222. } else {
223. return '';
224. }
225. } else {
226. return $keyc.str_replace('=', '', base64_encode($result));
227. }
228. }
230. } // class end
231. ?>

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2，演示示例 demo.php

2. require 'Cookies.class.php';
4. $type = isset($_GET['type'])? strtolower($_GET['type']) : '';
6. if(!in_array($type, array('set','get','update','clear'))){
7. exit('type not exists');
8. }
10. $obj = new Cookies('member', 10); // obj
12. switch($type){
14. case 'set': // 设置
15. $data = array(
16. 'name' => 'fdipzone',
17. 'gender' => 'male'
18. );
19. $obj->set('me', $data, 5);
20. echo 'set cookies';
21. break;
23. case 'get': // 读取
24. $result = $obj->get('me');
26. echo '

    ';  

27. print_r($result);
28. echo '';
30. echo 'get cookies';
31. break;
33. case 'update': // 更新
34. $data = array(
35. 'name' => 'angelababy',
36. 'gender' => 'female'
37. );
38. $flag = $obj->update('me', $data);
40. if($flag){
41. echo 'update cookies success';
42. }else{
43. echo 'update cookies false';
44. }
46. break;
48. case 'clear': // 清除
49. $obj->clear('me');
50. echo 'clear cookies';
51. break;
52. }
53. ?>

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附，PHP Cookies操作类的源码下载地址