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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:
_prefix = $prefix; } if(is_numeric($expire) && $expire>0){ $this->_expire = $expire; } if(is_string($securekey) && $securekey!=&#39;&#39;){ $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, &#39;ENCODE&#39;, $this->_securekey); if($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], &#39;DECODE&#39;, $this->_securekey); $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], &#39;DECODE&#39;, $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, &#39;ENCODE&#39;, $this->_securekey); if($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!=&#39;&#39;){ $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? $this->_prefix.&#39;_&#39;.$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===&#39;&#39;){ return &#39;&#39;; } $COOKIE_data = array(); $COOKIE_data[&#39;value&#39;] = $data; $COOKIE_data[&#39;expire&#39;] = $expire; return json_encode($COOKIE_data); } /** unpack * @param Mixed $data 数据 * @return array(数据,过期时间) */ private function unpack($data){ if($data===&#39;&#39;){ return array(&#39;&#39;, 0); } $COOKIE_data = json_decode($data, true); if(isset($COOKIE_data[&#39;value&#39;]) && isset($COOKIE_data[&#39;expire&#39;])){ if(time()<$COOKIE_data[&#39;expire&#39;]){ // 未过期 return array($COOKIE_data[&#39;value&#39;], $COOKIE_data[&#39;expire&#39;]); } } return array(&#39;&#39;, 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 = &#39;DECODE&#39;){ $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 == &#39;DECODE&#39; ? substr($string, 0, $ckey_length): substr(md5(microtime()), -$ckey_length)) : &#39;&#39;; $cryptkey = $keya.md5($keya.$keyc); $key_length = strlen($cryptkey); $string = $operation == &#39;DECODE&#39; ? base64_decode(substr($string, $ckey_length)) : sprintf(&#39;%010d&#39;, 0).substr(md5($string.$keyb), 0, 16).$string; $string_length = strlen($string); $result = &#39;&#39;; $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($operation == &#39;DECODE&#39;) { if((substr($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 &#39;&#39;; } } else { return $keyc.str_replace(&#39;=&#39;, &#39;&#39;, base64_encode($result)); } } } // class end ?>
demo.php示例程序如下:
&#39;fdipzone&#39;, &#39;gender&#39; => &#39;male&#39; ); $obj->set(&#39;me&#39;, $data, 5); echo &#39;set COOKIEs&#39;; break; case &#39;get&#39;: // 读取 $result = $obj->get(&#39;me&#39;); echo &#39;&#39;; print_r($result); echo &#39;&#39;; echo &#39;get COOKIEs&#39;; break; case &#39;update&#39;: // 更新 $data = array( &#39;name&#39; => &#39;angelababy&#39;, &#39;gender&#39; => &#39;female&#39; ); $flag = $obj->update(&#39;me&#39;, $data); if($flag){ echo &#39;update COOKIEs success&#39;; }else{ echo &#39;update COOKIEs false&#39;; } break; case &#39;clear&#39;: // 清除 $obj->clear(&#39;me&#39;); echo &#39;clear COOKIEs&#39;; break; } ?>
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