本文实例讲述了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.强制超时控制。
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:
<&#63;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&#63; $expire : $this->_expire); $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, $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', $this->_securekey); $COOKIE_value = $this->unpack($COOKIE_value); return isset($COOKIE_value[0])&#63; $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', $this->_securekey); $old_COOKIE_value = $this->unpack($old_COOKIE_value); if(isset($old_COOKIE_value[1]) && $old_COOKIE_vlaue[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', $this->_securekey); if($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&#63; $this->_prefix.'_'.$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 = $ckey_length &#63; ($operation == 'DECODE' &#63; substr($string, 0, $ckey_length): substr(md5(microtime()), -$ckey_length)) : ''; $cryptkey = $keya.md5($keya.$keyc); $key_length = strlen($cryptkey); $string = $operation == 'DECODE' &#63; base64_decode(substr($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 &#63;>
demo.php示例程序如下:
<&#63;php require 'COOKIEs.class.php'; $type = isset($_GET['type'])&#63; 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 = $obj->get('me'); echo ''; print_r($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; } &#63;>
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希望本文所述对大家的PHP程序设计有所帮助。