php实现的Cookies操作类实例_

1、php实现的Cookies操作类实例_ 本文实例讲解并描述了PHP实现的Cookies操作类及其用法，分享给大家供大家参考。具体分析如下： 一、功能： 1.保存，读取，更新，清除cookies数据。 2.可设置前缀。 3.强制超时掌握。 4.cookies数据可以是字符串，数组，对象等。 二、用法： Cookies.class.php类文件如下： ?1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666

2、768697071727374757677787980818283848586878889909192939495969798991001011021031041051061071081091101111121131141151161171181191202111221231241251261271281291301311321331341351361371381391401411421431441451461471481491501511521531541551561571581591601611621631641651661671681691701711721731741751761771

3、78179180181182183184185186187188189190191192193194195196197198199202101202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250 ?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: 20

4、21-12-22 * 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 猎取cookie name,增加prefi

5、x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 se

6、cure key */ public function _construct($prefix=, $expire=0, $securekey=) if(is_string($prefix) $prefix!=) $this-_prefix = $prefix; if(is_numeric($expire) $expire0) $this-_expire = $expire; if(is_string($securekey) $securekey!=) $this-_securekey = $securekey; /* 设置cookie * param String $name cookie n

7、ame * 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-a

8、uthcode($cookie_value, ENCODE, $this-_securekey); if($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

9、($_COOKIE$cookie_name) $cookie_value = $this-authcode($_COOKIE$cookie_name, DECODE, $this-_securekey); $cookie_value = $this-unpack($cookie_value); return isset($cookie_value0)? $cookie_value0 : null; else return null; /* 更新cookie,只更新内容,如需要更新过期时间请用法set方法 * param String $name cookie name * param mixe

10、d $value cookie value * return boolean */ public function update($name, $value) $cookie_name = $this-getName($name); if(isset($_COOKIE$cookie_name) $old_cookie_value = $this-authcode($_COOKIE$cookie_name, DECODE, $this-_securekey); $old_cookie_value = $this-unpack($old_cookie_value); if(isset($old_c

11、ookie_value1) $old_cookie_vlaue10) / 猎取之前的过期时间 $cookie_expire = $old_cookie_value1; / 更新数据 $cookie_value = $this-pack($value, $cookie_expire); $cookie_value = $this-authcode($cookie_value, ENCODE, $this-_securekey); if($cookie_name $cookie_value $cookie_expire) setcookie($cookie_name, $cookie_value,

12、 $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!=)

13、$this-_prefix = $prefix; /* 设置过期时间 * param int $expire cookie expire */ public function setExpire($expire) if(is_numeric($expire) $expire0) $this-_expire = $expire; /* 猎取cookie name * param String $name * return String */ private function getName($name) return $this-_prefix? $this-_prefix._.$name :

14、$name; /* pack * param Mixed $data 数据 * param int $expire 过期时间 用于推断 * return */ private function pack($data, $expire) if($data=) return ; $cookie_data = array(); $cookie_datavalue = $data; $cookie_dataexpire = $expire; return json_encode($cookie_data); /* unpack * param Mixed $data 数据 * return array

15、(数据,过期时间) */ private function unpack($data) if($data=) return array(, 0); $cookie_data = json_decode($data, true); if(isset($cookie_datavalue) isset($cookie_dataexpire) if(time()$cookie_dataexpire) / 未过期 return array($cookie_datavalue, $cookie_dataexpire); return array(, 0); /* 加密/解密数据 * param Strin

16、g $str 原文或密文 * param String $operation ENCODE or DECODE * return String 依据设置返回明文活密文 */ private function authcode($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 = $ck

17、ey_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.$key

18、b), 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

19、= $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,

20、 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 ? demo.php示例程序如下： ?1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253 ?php require Co