Linux面板7.9.9降级/升级命令：curl https://api.4dn.net/update/7.9.9/update_panel.sh|bashLinux面板7.9.10降级/升级命令：curl https://api.4dn.net/update/7.9.10/update_panel.sh|bash

用过ajax的童鞋就知道ajax可以跨域触发某个接口，但是由此引起一个任何域都可以调用的问题，这时候就要考虑用到防盗链技术了，在PHP中$_SERVER["HTTP_REFERER"]，$_SERVER["HTTP_REFERER"]里放置的是链接到本页面的上一个页面的URL，假如你是直接进来的话，$_SERVER["HTTP_REFERER"]是没有值的。下面以一个简单的实例介绍一下，PHP如何防伪造提交数据：1、非4dn.net调用的接口全部拒绝访问<?php $sheli = $_SERVER['HTTP_HOST'];if($sheli){$url = parse_url($sheli);if($url['path'] != '4dn.net'){exit('拒绝访问！');}} ?>2、允许在4dn.net子域名间调用的方法<?php $sheli = $_SERVER['HTTP_HOST']; if($sheli){$url = parse_url($sheli);$t=explode('.',$url['path']);$l=count($t);$domainStr=$t[$l-2].'.'.$t[$l-1];if($domainStr != '4dn.net') {echo('拒绝访问！');}} ?>

好看的动态飘花灯笼特效代码可直接将代码复制粘贴到各种页面底部使用！若需要全站可直接将代码复制粘贴到footer.php或footer.html等脚模板底部区域文件使用提示：加显示判断函数，代码必须添加在页脚模板或直接添加到任意的网站底部效果图：代码：<!-- 灯笼节 --> <div class="deng-box"> <div class="deng"> <div class="xian"></div> <div class="deng-a"> <div class="deng-b"><div class="deng-t">节</div></div> </div> <div class="shui shui-a"><div class="shui-c"></div><div class="shui-b"></div></div> </div> </div> <!-- 灯笼春 --> <div class="deng-box1"> <div class="deng"> <div class="xian"></div> <div class="deng-a"> <div class="deng-b"><div class="deng-t">春</div></div> </div> <div class="shui shui-a"><div class="shui-c"></div><div class="shui-b"></div></div> </div> </div> <!-- 灯笼迎 --> <div class="deng-box2"> <div class="deng"> <div class="xian"></div> <div class="deng-a"> <div class="deng-b"><div class="deng-t">迎</div></div> </div> <div class="shui shui-a"><div class="shui-c"></div><div class="shui-b"></div></div> </div> </div> <style> .deng-box{position: fixed;top: -40px;right: -20px;z-index: 9999;pointer-events: none;} .deng-box1{position: fixed;top: -30px;right: 10px;z-index: 9999;pointer-events: none;} .deng-box1 .deng{position: relative;width: 120px;height: 90px;margin: 50px;background: #d8000f;background: rgba(216, 0, 15, 0.8);border-radius: 50% 50%;-webkit-transform-origin: 50% -100px;-webkit-animation: swing 5s infinite ease-in-out;box-shadow: -5px 5px 30px 4px rgba(252, 144, 61, 1);} .deng-box2{position: fixed;top: -30px;right: 50px;z-index: 9999;pointer-events: none;} .deng-box2 .deng{position: relative;width: 120px;height: 90px;margin: 50px;background: #d8000f;background: rgba(216, 0, 15, 0.8);border-radius: 50% 50%;-webkit-transform-origin: 50% -100px;-webkit-animation: swing 4s infinite ease-in-out;box-shadow: -5px 5px 30px 4px rgba(252, 144, 61, 1);} .deng{position: relative;width: 120px;height: 90px;margin: 50px;background: #d8000f;background: rgba(216, 0, 15, 0.8);border-radius: 50% 50%;-webkit-transform-origin: 50% -100px;-webkit-animation: swing 3s infinite ease-in-out;box-shadow: -5px 5px 50px 4px rgba(250, 108, 0, 1);} .deng-a{width: 100px;height: 90px;background: #d8000f;background: rgba(216, 0, 15, 0.1);margin: 12px 8px 8px 10px;border-radius: 50% 50%;border: 2px solid #dc8f03;} .deng-b{width: 45px;height: 90px;background: #d8000f;background: rgba(216, 0, 15, 0.1);margin: -2px 8px 8px 26px;border-radius: 50% 50%;border: 2px solid #dc8f03;} .xian{position: absolute;top: -20px;left: 60px;width: 2px;height: 20px;background: #dc8f03;} .shui-a{position: relative;width: 5px;height: 20px;margin: -5px 0 0 59px;-webkit-animation: swing 4s infinite ease-in-out;-webkit-transform-origin: 50% -45px;background: #ffa500;border-radius: 0 0 5px 5px;} .shui-b{position: absolute;top: 14px;left: -2px;width: 10px;height: 10px;background: #dc8f03;border-radius: 50%;} .shui-c{position: absolute;top: 18px;left: -2px;width: 10px;height: 35px;background: #ffa500;border-radius: 0 0 0 5px;} .deng:before{position: absolute;top: -7px;left: 29px;height: 12px;width: 60px;content: &quot;&quot;;display: block;z-index: 999;border-radius: 5px 5px 0 0;border: solid 1px #dc8f03;background: #ffa500;background: linear-gradient(to right, #dc8f03, #ffa500, #dc8f03, #ffa500, #dc8f03);} .deng:after{position: absolute;bottom: -7px;left: 10px;height: 12px;width: 60px;content: &quot;&quot;;display: block;margin-left: 20px;border-radius: 0 0 5px 5px;border: solid 1px #dc8f03;background: #ffa500;background: linear-gradient(to right, #dc8f03, #ffa500, #dc8f03, #ffa500, #dc8f03);} .deng-t{font-family: 华文行楷,Arial,Lucida Grande,Tahoma,sans-serif;font-size: 3.2rem;color: #dc8f03;font-weight: bold;line-height: 85px;text-align: center;} .night .deng-t, .night .deng-box, .night .deng-box1{background: transparent !important;} @-moz-keyframes swing{0%{-moz-transform: rotate(-10deg)} 50%{-moz-transform: rotate(10deg)} 100%{-moz-transform: rotate(-10deg)}} @-webkit-keyframes swing{0%{-webkit-transform: rotate(-10deg)} 50%{-webkit-transform: rotate(10deg)} 100%{-webkit-transform: rotate(-10deg)}} </style>